defalte testing

Conflicts:
	avr/usbload/Makefile

.ditz-config

@@ -1,4 +0,0 @@
---- !ditz.rubyforge.org,2008-03-06/config 
-name: David
-email: david@optixx.org
-issue_dir: bugs

avr/bootloader/bootloader.c

@@ -33,6 +33,10 @@
 #include "config.h"
 #include "usbdrv/usbdrv.c"
 
+
+
+
+
 /*
  * USBasp requests, taken from the original USBasp sourcecode 
  */
@@ -74,8 +78,12 @@
                   (LED_DIR ^= (1 << LED_PIN)));}
 
 
+#define AVR_BTLDR_EN_PORT	    PORTC
+#define AVR_BTLDR_EN_DIR	    DDRC
+#define AVR_BTLDR_EN_PIN	    PC1
+#define AVR_BTLDR_EN_IN	        PINC
 
-
+#undef AVR_BTLDR_SWITCH
 /*
  * some predefined signatures, taken from the original USBasp sourcecode 
  */
@@ -449,6 +457,29 @@ int __attribute__ ((noreturn, OS_main)) main(void)
     uint16_t delay = 0;
     timeout = TIMEOUT;
 
+    DDRC &= ~(1 << AVR_BTLDR_EN_PIN);	    
+    PORTC &= ~(1 << AVR_BTLDR_EN_PIN);	    
+
+    /*
+     * if watchdog reset, disable watchdog and jump to app 
+     */
+    if (reset & _BV(WDRF)) {
+        uart_puts("Found watchdog reset\n\r");
+        MCUSR = 0;
+        wdt_disable();
+        uart_puts("Jump to 0x0000\n\r");
+        jump_to_app();
+    }
+
+#ifdef AVR_BTLDR_SWITCH ENABLE
+    if ((AVR_BTLDR_EN_IN & ( 1 << AVR_BTLDR_EN_PIN)) == 0){
+        banner();
+        uart_puts("Bootloader flashing is disabled\n\r");
+        MCUSR = 0;
+        leave_bootloader();
+        
+    }
+#endif
 
     /*
      * if power-on reset, quit bootloader via watchdog reset 
@@ -459,17 +490,6 @@ int __attribute__ ((noreturn, OS_main)) main(void)
         MCUSR = 0;
         leave_bootloader();
     }
-    /*
-     * if watchdog reset, disable watchdog and jump to app 
-     */
-    else if (reset & _BV(WDRF)) {
-        uart_puts("Found watchdog reset\n\r");
-        MCUSR = 0;
-        wdt_disable();
-        uart_puts("Jump to 0x0000\n\r");
-        jump_to_app();
-    }
-
     banner();
     uart_puts("Enter programming mode\n\r");
     /*

avr/usbload/Makefile

@@ -19,27 +19,31 @@
 DEBUG   = 1
 TTY     = /dev/tty.PL2303-00002126
 DEVICE  = atmega644
-F_CPU   = 20000000	# in Hz
+F_CPU   = 20000000
 TARGET  = main
 AVRDUDE = avrdude -c usbasp -p $(DEVICE)
 SIZE    = avr-size
-
+BOOT_ROM01  = ../../roms/qd16boot01.smc
+BOOT_ROM02  = ../../roms/qd16boot02.smc
+CONVERT_RLE = ../../scripts/conv_rle.py
+CONVERT_ZIP = ../../scripts/conv_zip.py
 
 
 
 ifeq ($(DEBUG),1)
-    LDFLAGS =  -Wl,-u,vfprintf -lprintf_flt 
-    CFLAGS  = -Iusbdrv -I. -DDEBUG_LEVEL=0 
+    LDFLAGS =-Wl,-u,vfprintf 
+    CFLAGS  =-Iusbdrv -I. -DDEBUG_LEVEL=0 
     OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o \
                main.o usb_bulk.o uart.o fifo.o sram.o crc.o debug.o \
                dump.o timer.o watchdog.o rle.c loader.o info.o shared_memory.o \
-               irq.o command.o testing.o
+               system.o pwm.o util.o shell.o irq.o command.o testing.o inflate.o neginf/neginf.o
 else 
-    LDFLAGS =  -Wl,-u
-    CFLAGS  = -Iusbdrv -I. -DDEBUG_LEVEL=0 -DNO_DEBUG -DNO_INFO
+    LDFLAGS =-Wl,-u
+    CFLAGS  =-Iusbdrv -I. -DDEBUG_LEVEL=0 -DNO_DEBUG -DNO_INFO
     OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o  main.o usb_bulk.o \
-              uart.o fifo.o sram.o crc.o debug.o dump.o timer.o watchdog.o rle.c loader.o \
-              info.o shared_memory.o command.o irq.o
+              sram.o crc.o debug.o dump.o rle.c loader.o \
+              system.o util.o info.o shared_memory.o command.o irq.o \
+              pwm.o inflate.o neginf/neginf.o
 endif
 
 COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)
@@ -76,6 +80,11 @@ fuse:
 flash: main.hex
 	$(AVRDUDE) -U flash:w:main.hex:i
 
+loader01:
+	python $(CONVERT_RLE) $(BOOT_ROM01)
+
+loader02:
+	python $(CONVERT_ZIP) $(BOOT_ROM02)
 
 .c.o:
 	$(COMPILE) -c $< -o $@
@@ -105,4 +114,4 @@ cpp:
 	$(COMPILE) -E main.c
 
 clean:
-	rm -f main.hex main.lst main.obj main.cof main.list main.map main.eep.hex main.elf *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
+	rm -f main.hex main.lst main.obj main.cof main.list main.map main.eep.hex main.elf *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s neginf/*.o

avr/usbload/Makefile.test

@@ -0,0 +1,19 @@
+
+MD5=md5
+
+all:
+	gcc -c loader_test.c
+	gcc -c inflate.c
+	gcc -c neginf/neginf.c
+	gcc -c inflate_test.c
+	gcc -c ringbuffer.c
+	gcc -o inflate_test inflate.o neginf.o inflate_test.o loader_test.o ringbuffer.o
+loader:
+	python ../../scripts/conv_zip_test.py ../../roms/qd16boot02_half.smc
+	
+test:
+	./inflate_test
+	@$(MD5) out.smc
+	@$(MD5) out_ref.smc
+	@$(MD5) ../../roms/qd16boot02_half.smc
+

avr/usbload/checksize

@@ -8,7 +8,7 @@
 # Revision: $:Id: checksize 83 2006-01-05 22:20:53Z cs $
 
 error=0
-codelimit=65536  # default value
+codelimit=61440  # default value
 datalimit=4064   # default value; leave 32 bytes for stack
 
 if [ $# -gt 1 ]; then

avr/usbload/command.c

@@ -28,38 +28,93 @@
 #include "sram.h"
 #include "info.h"
 #include "irq.h"
+#include "usbdrv.h"
+#include "rle.h"
+#include "loader.h"
+#include "system.h"
 
-extern uint32_t req_bank_size;
+#include "neginf/neginf.h"
+#include "inflate.h"
 
 
-void send_reset()
+extern usb_transaction_t usb_trans;
+extern system_t system;
+
+extern const char *_rom[];
+extern const char _rom01[];
+extern const int _rom_size[];
+
+void usb_connect()
 {
-    info_P(PSTR("Reset SNES\n"));
+    uint8_t i = 0;
+    info_P(PSTR("USB init\n"));
+    usbDeviceDisconnect();      /* enforce re-enumeration, do this while */
     cli();
-    snes_reset_on();
-    snes_reset_lo();
-    _delay_ms(2);
-    snes_reset_hi();
-    snes_reset_off();
-    sei();
-}
-
-void send_irq()
-{
-    snes_irq_on();
-    snes_irq_lo();
-    _delay_us(20);
-    snes_irq_hi();
-    snes_irq_off();
-}
-
-void set_rom_mode()
-{
-    if (req_bank_size == 0x8000) {
-        snes_lorom();
-        info_P(PSTR("Set SNES lowrom \n"));
-    } else {
-        snes_hirom();
-        info_P(PSTR("Set SNES hirom \n"));
+    info_P(PSTR("USB disconnect\n"));
+    i = 10;
+    while (--i) {               /* fake USB disconnect for > 250 ms */
+        _delay_ms(50);
     }
+    led_on();
+    usbDeviceConnect();
+    info_P(PSTR("USB connect\n"));
 }
+
+
+
+void boot_startup_rom(uint16_t init_delay)
+{
+    uint8_t i;
+    uint8_t c;
+    uint16_t j;
+    uint32_t addr = 0x000000;
+    PGM_VOID_P p_addr;
+    
+    info_P(PSTR("Fetch loader rom\n"));
+    
+    system_set_bus_avr();
+    snes_irq_lo();
+    system_snes_irq_off();
+    system_set_rom_lorom();
+    
+    
+    inflate_init();
+    for (i=0; i<ROM_BUFFER_CNT; i++){
+        p_addr = _rom[i];
+        printf("idx: %i %lx\n",i,p_addr);
+        for (j=0; j<_rom_size[i]; j++){
+            //rle_decode(_rom[i], _rom_size[i], addr);
+            c = pgm_read_byte((PGM_VOID_P)p_addr++); 
+            printf("%02x ",c);
+            neginf_process_byte(c);
+            
+        }
+    }
+    info_P(PSTR("\n"));
+
+#if DO_CRC_CHECK_LOADER     
+    dump_memory(0x010000 - 0x100, 0x010000);
+    uint16_t crc;
+    crc = crc_check_bulk_memory((uint32_t)0x000000,0x010000, 0x010000);
+    info(PSTR("crc=%x\n"),crc);
+#endif
+
+ 
+    snes_irq_lo();
+    system_snes_irq_off();
+    system_set_rom_hirom();
+    system_set_wr_disable();
+    system_set_bus_snes();
+    
+    
+    system_send_snes_reset();
+    _delay_ms(init_delay);
+}
+
+void banner(){
+    
+}
+
+void transaction_status(){
+}
+

avr/usbload/command.h

@@ -22,8 +22,10 @@
 #ifndef __COMMAND_H__
 #define __COMMAND_H__
 
-void send_reset();
-void send_irq();
-void set_rom_mode();
+void usb_connect();
+void boot_startup_rom(uint16_t init_delay);
+void banner();
+void transaction_status();
+
 
 #endif

avr/usbload/config.h

@@ -42,9 +42,16 @@
 #define USB_MAX_TRANS               0xff
 #define USB_CRC_CHECK               0x01
 
-#define TRANSFER_BUFFER_SIZE        0x200
-#define FORMAT_BUFFER_LEN           0x0FF
+#define TRANSFER_BUFFER_SIZE        0x000
+#define FORMAT_BUFFER_LEN           0x080
+#define RECEIVE_BUF_LEN             0x030
 #define HW_VERSION                  "2.6"
 #define SW_VERSION                  "1.0"
 
+#define DO_CRC_CHECK_LOADER         0
+#define DO_CRC_CHECK                0
+#define DO_SHM_SCRATCHPAD           0
+#define DO_SHM                      0
+#define DO_TIMER                    0
+
 #endif 

avr/usbload/crc.c

@@ -75,7 +75,7 @@ uint16_t crc_check_bulk_memory(uint32_t bottom_addr, uint32_t top_addr, uint32_t
         bottom_addr,top_addr);
     
     for (addr = bottom_addr; addr < top_addr; addr++) {
-        if (addr && addr % bank_size == 0) {
+        if (addr && ((addr % bank_size) == 0)) {
             debug_P(DEBUG_CRC, PSTR("crc_check_bulk_memory: bank=0x%02x addr=0x%08lx crc=0x%04x\n"),
                 req_bank,addr,crc);
             req_bank++;

avr/usbload/debug.c

@@ -30,21 +30,6 @@ extern FILE uart_stdout;
 
 extern int debug_level; /* the higher, the more messages... */
 
-#if defined(NO_DEBUG) && defined(__GNUC__)
-#else
-void debug(int level, char* format, ...) {
-#ifdef NO_DEBUG
-
-#else
-    va_list args;
-    if (!(debug_level & level))
-        return;
-    va_start(args, format);
-    vprintf(format, args);
-    va_end(args);
-#endif 
-}
-#endif 
 
 #ifndef NO_INFO
     uint8_t buffer_debug[FORMAT_BUFFER_LEN];
@@ -59,10 +44,11 @@ void debug_P(int level, PGM_P format, ...) {
     va_list args;
     if (!(debug_level & level))
         return;
-    strlcpy_P(buffer_debug,format,FORMAT_BUFFER_LEN);
+    strlcpy_P((char*)buffer_debug,format,FORMAT_BUFFER_LEN);
     va_start(args, format);
-    vprintf(buffer_debug, args);
+    vprintf((char*)buffer_debug, args);
     va_end(args);
 #endif
 }
-#endif 
+#endif 
+

avr/usbload/dump.c

@@ -26,6 +26,7 @@
 #include "info.h"
 #include "uart.h"
 #include "sram.h"
+#include "dump.h"
 
 
 extern FILE uart_stdout;

avr/usbload/inflate.c

@@ -0,0 +1,85 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  09/22/2009
+ *         Author:  jannis@harderweb.de
+ *
+ * =====================================================================================
+ */
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "neginf/neginf.h"
+#include "inflate.h"
+#include "assert.h"
+#include "ringbuffer.h"
+
+char inflate_done = 0;
+char *mem_ref;
+
+int addr_ref = 0;
+
+int cnt_hit = 0;
+int cnt = 0;
+
+
+void inflate_init() 
+{
+    neginf_init(0);
+    mem_ref = (char*)malloc(2<<15);
+    addr_ref = 0;
+    rb_init();
+}
+
+void inflate_flush() 
+{    
+
+    rb_flush();
+    FILE *file;
+    printf("write out_ref.smc\n");
+    file = fopen("out_ref.smc","w");
+    fwrite(mem_ref,2<<15,1,file);
+    fclose(file);
+    printf("cnt=%i cnt_hit=%i\n",cnt,cnt_hit);
+}
+
+void neginf_cb_completed()
+{
+    inflate_done = 1;
+}
+
+void neginf_cb_seq_byte(nbyte byte)
+{
+    mem_ref[addr_ref++] = byte; 
+    rb_put(byte);
+}
+
+void neginf_cb_copy(nsize from, nsize to, nint length)
+{
+    int i;
+    cnt++;
+    if ((to - from) < ( 1024 * 2 ) ){
+        cnt_hit++;
+    }
+    printf("neginf_cb_copy from=0x%06x to=0x%06x dist=%i len=%i\n",(int)from, (int)to, (int)(to - from), (int)length);
+    for (i=0; i<length;i++){
+        mem_ref[to+i] = mem_ref[from+i];
+    }
+    addr_ref = to + length;
+}
+
+
+
+

avr/usbload/inflate.h

@@ -0,0 +1,28 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  09/22/2009
+ *         Author:  jannis@harderweb.de
+ *
+ * =====================================================================================
+ */
+
+
+
+#ifndef __INFLATE_H__
+#define __INFLATE_H__
+
+extern char inflate_done;
+
+#endif

avr/usbload/inflate_test.c

@@ -0,0 +1,44 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "neginf/neginf.h"
+#include "inflate.h"
+#include "loader_test.h"
+
+extern const char _rom[];
+extern char inflate_done;
+
+
+int main(int argc, char **argv)
+{
+    
+    int j;
+    char c;
+    inflate_init();
+    for (j=0; j< ROM_ZIP_SIZE; j++){
+        neginf_process_byte(_rom[j]);
+    }
+    while(!inflate_done)
+        neginf_process_byte(0x00);
+    inflate_flush();
+    return 0;
+}

avr/usbload/info.c

@@ -32,24 +32,6 @@
 extern FILE uart_stdout;
 
 
-#if defined(NO_INFO) && defined(__GNUC__)
-
-#define info(format, args...) ((void)0)
-
-#else
-void info(char* format, ...) {
-#ifdef NO_INFO
-
-#else
-    va_list args;
-    va_start(args, format);
-    vprintf(format, args);
-    va_end(args);
-#endif 
-}
-#endif 
-
-
 #ifndef NO_INFO
     uint8_t buffer_info[FORMAT_BUFFER_LEN];
 #endif
@@ -63,10 +45,10 @@ void info_P(PGM_P format, ...) {
 #ifdef NO_INFO
 
 #else
-    strlcpy_P(buffer_info,format,FORMAT_BUFFER_LEN);
+    strlcpy_P((char*)buffer_info,format,FORMAT_BUFFER_LEN);
     va_list args;
     va_start(args, format);
-    vprintf(buffer_info, args);
+    vprintf((char*)buffer_info, args);
     va_end(args);
 #endif
 }

avr/usbload/irq.c

@@ -34,7 +34,9 @@
 #include "debug.h" 
 #include "info.h"
 #include "sram.h"
- 
+#include "system.h"
+
+extern system_t system;
   
 void (*jump_to_app) (void) = 0x0000;
   
@@ -43,24 +45,26 @@ void irq_init(){
     PCMSK3 |=(1<<PCINT27);
     PCICR  |= (1<<PCIE3);
     sei();
+    system.reset_irq = RESET_IRQ_ON;
 } 
 
 void irq_stop(){
     cli();
     PCMSK3 &=~(1<<PCINT27);
     sei();
+    system.reset_irq = RESET_IRQ_OFF;
 } 
 
 void leave_application(void)
 {
     cli();
     usbDeviceDisconnect();
+    system.avr_reset_count++;
     wdt_enable(WDTO_15MS);
     while (1);
 
 }
 
- 
 ISR (SIG_PIN_CHANGE3)
 {
     if (snes_reset_test()){

avr/usbload/irq.h

@@ -22,4 +22,7 @@
 #ifndef __IRQ_H__
 #define __IRQ_H__
 
+void irq_init();
+void irq_stop();
+void leave_application(void);
 #endif

avr/usbload/loader.h

@@ -1,11 +1,14 @@
-
+/*
+File: qd16boot02.smc 
+Time: Sat, 24 Oct 2009 19:05:36
+*/
 #ifndef __FIFO_H__
 #define __FIFO_H__
 
-#define ROM_BUFFER_SIZE  31091
-#define ROM_HUFFMAN_SIZE 0
-#define ROM_RLE_SIZE     31091
+#define ROM_ZIP_SIZE     33654
+#define ROM_BUFFER_CNT   2
 
-void irq_init();
+#define ROM_BUFFER_SIZE01  32767
+#define ROM_BUFFER_SIZE02  887
 
 #endif

avr/usbload/loader_test.h

@@ -2,6 +2,6 @@
 #ifndef __FIFO_H__
 #define __FIFO_H__
 
-#define ROM_SIZE 30346
+#define ROM_ZIP_SIZE     35543
 
 #endif

avr/usbload/main.c

@@ -26,6 +26,7 @@
 #include <stdlib.h>
 #include <avr/pgmspace.h>       
 #include <avr/eeprom.h>
+#include <string.h>
 
 #include "usbdrv.h"
 #include "oddebug.h"            
@@ -44,35 +45,21 @@
 #include "loader.h"
 #include "command.h"
 #include "shared_memory.h"
+#include "irq.h"
+#include "pwm.h"
 #include "testing.h"
+#include "shell.h"
+#include "system.h"
 
-
-
-extern const char _rom[] PROGMEM;
+#ifndef NO_DEBUG            
 extern FILE uart_stdout;
+#endif
+extern system_t system;
 
-uint8_t debug_level = (DEBUG | DEBUG_USB | DEBUG_CRC | DEBUG_SHM);
-
-uint8_t read_buffer[TRANSFER_BUFFER_SIZE];
-uint32_t req_addr = 0;
-uint32_t req_addr_end = 0;
-uint32_t req_size;
-uint8_t req_bank;
-uint32_t req_bank_size;
-uint16_t req_bank_cnt;
-uint8_t req_percent;
-uint8_t req_percent_last;
-uint8_t req_state = REQ_STATUS_IDLE;
-uint8_t rx_remaining = 0;
-uint8_t tx_remaining = 0;
-uint16_t sync_errors = 0;
-uint8_t tx_buffer[32];
-uint8_t data_buffer[4];
-uint32_t addr;
-uint16_t crc = 0;
-
+uint8_t debug_level = (DEBUG | DEBUG_CRC);
 
 
+usb_transaction_t usb_trans;
 
 usbMsgLen_t usbFunctionSetup(uchar data[8])
 {
@@ -82,53 +69,61 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
 
     if (rq->bRequest == USB_BULK_UPLOAD_INIT) {
 
-        req_bank = 0;
-        rx_remaining = 0;
+        usb_trans.req_bank = 0;
+        usb_trans.rx_remaining = 0;
         debug_P(DEBUG_USB, PSTR("USB_BULK_UPLOAD_INIT: %i %i\n"), rq->wValue.word,
               rq->wIndex.word);
-        req_bank_size = (uint32_t) (1L << rq->wValue.word);
-        req_bank_cnt = rq->wIndex.word;
-        req_addr_end = (uint32_t) req_bank_size *req_bank_cnt;
-        req_percent = 0;
-        req_percent_last = 0;
-        sync_errors = 0;
+        usb_trans.req_bank_size = (uint32_t) (1L << rq->wValue.word);
+        usb_trans.req_bank_cnt = rq->wIndex.word;
+        usb_trans.req_addr_end = (uint32_t) usb_trans.req_bank_size * usb_trans.req_bank_cnt;
+        usb_trans.req_percent = 0;
+        usb_trans.req_percent_last = 0;
+        usb_trans.sync_errors = 0;
         debug_P(DEBUG_USB,
               PSTR("USB_BULK_UPLOAD_INIT: bank_size=0x%08lx bank_cnt=0x%x end_addr=0x%08lx\n"),
-              req_bank_size, req_bank_cnt, req_addr_end);
+              usb_trans.req_bank_size, usb_trans.req_bank_cnt, usb_trans.req_addr_end);
 
-        shared_memory_write(SHARED_MEM_TX_CMD_BANK_COUNT, req_bank_cnt);
-        if (req_addr == 0x000000) {
+        shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_START, 0);
+        shared_memory_write(SHARED_MEM_TX_CMD_BANK_COUNT, usb_trans.req_bank_cnt);
+#if DO_TIMER
+        if (usb_trans.req_addr == 0x000000) {
+#ifndef NO_DEBUG            
             timer_start();
+#endif       
         }
+#endif       
         /*
          * -------------------------------------------------------------------------
          */
     } else if (rq->bRequest == USB_BULK_UPLOAD_ADDR) {
 
-        req_state = REQ_STATUS_BULK_UPLOAD;
-        req_addr = rq->wValue.word;
-        req_addr = req_addr << 16;
-        req_addr = req_addr | rq->wIndex.word;
-        rx_remaining = rq->wLength.word;
+        usb_trans.req_state = REQ_STATUS_BULK_UPLOAD;
+        usb_trans.req_addr = rq->wValue.word;
+        usb_trans.req_addr = usb_trans.req_addr << 16;
+        usb_trans.req_addr = usb_trans.req_addr | rq->wIndex.word;
+        usb_trans.rx_remaining = rq->wLength.word;
 
+        
 
-        if (req_addr && req_addr % req_bank_size == 0) {
+        if (usb_trans.req_addr && usb_trans.req_addr % usb_trans.req_bank_size == 0) {
+#if DO_TIMER
+#ifndef NO_DEBUG            
 #ifdef FLT_DEBUG
             debug_P(DEBUG_USB,
                   PSTR("USB_BULK_UPLOAD_ADDR: req_bank=0x%02x addr=0x%08lx time=%.4f\n"),
-                  req_bank, req_addr, timer_stop());
+                  usb_trans.req_bank, usb_trans.req_addr, timer_stop());
 #else
             debug_P(DEBUG_USB,
                   PSTR("USB_BULK_UPLOAD_ADDR: req_bank=0x%02x addr=0x%08lx time=%i\n"),
-                  req_bank, req_addr, timer_stop_int());
+                  usb_trans.req_bank, usb_trans.req_addr, timer_stop_int());
 #endif
-            req_bank++;
-            shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_PROGESS, req_bank);
-            sram_bulk_write_start(req_addr);
-            timer_start();
+              timer_start();
+#endif
+#endif
+            usb_trans.req_bank++;
 
         } else {
-            sram_bulk_write_start(req_addr);
+            sram_bulk_write_start(usb_trans.req_addr);
         }
         ret_len = USB_MAX_TRANS;
 
@@ -136,97 +131,73 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
          * -------------------------------------------------------------------------
          */
     } else if (rq->bRequest == USB_BULK_UPLOAD_NEXT) {
+        usb_trans.req_state = REQ_STATUS_BULK_UPLOAD;
+        usb_trans.req_addr = rq->wValue.word;
+        usb_trans.req_addr = usb_trans.req_addr << 16;
+        usb_trans.req_addr = usb_trans.req_addr | rq->wIndex.word;
+        usb_trans.rx_remaining = rq->wLength.word;
 
-        req_state = REQ_STATUS_BULK_UPLOAD;
-        req_addr = rq->wValue.word;
-        req_addr = req_addr << 16;
-        req_addr = req_addr | rq->wIndex.word;
-        rx_remaining = rq->wLength.word;
-
-        req_percent = (uint32_t)( 100 * req_addr )  / req_addr_end;
-        if (req_percent!=req_percent_last){
-            //debug_P(DEBUG_USB,
-            //    PSTR("USB_BULK_UPLOAD_ADDR: precent=%i\n",  req_percent);
-            shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_PROGESS, req_percent);
-            sram_bulk_write_start(req_addr);
+#if DO_SHM
+        usb_trans.req_percent = (uint32_t)( 100 * usb_trans.req_addr )  / usb_trans.req_addr_end;
+        if (usb_trans.req_percent!=usb_trans.req_percent_last){
+            shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_PROGESS, usb_trans.req_percent);
         }
-        req_percent_last = req_percent;
-
-#if 0
-        if (req_addr && (req_addr % 0x1000) == 0) {
-            debug_P(DEBUG_USB,
-                  PSTR("USB_BULK_UPLOAD_NEXT: bank=0x%02x addr=0x%08lx crc=%04x\n",
-                  req_bank, req_addr, crc_check_bulk_memory(req_addr - 0x1000,
-                                                            req_addr,
-                                                            req_bank_size));
-
-        }
-        sram_bulk_write_start(req_addr);
-#endif
-
-#if SHM_SCRATCHPAD
-        if (!shared_memory_scratchpad_region_save_helper(req_addr)){
-            debug_P(DEBUG_USB,
-                  PSTR("USB_BULK_UPLOAD_NEXT: scratchpad_region_save_helper was dirty\n"));
-            sram_bulk_write_start(req_addr);
-        }
-#endif
-
-
-        if (req_addr && (req_addr % req_bank_size) == 0) {
+        usb_trans.req_percent_last = usb_trans.req_percent;
+        shared_memory_scratchpad_region_save_helper(usb_trans.req_addr);
+#endif        
+        if (usb_trans.req_addr && (usb_trans.req_addr % usb_trans.req_bank_size) == 0) {
+#if DO_TIMER
+#ifndef NO_DEBUG            
 #ifdef FLT_DEBUG
             debug_P(DEBUG_USB,
                   PSTR("USB_BULK_UPLOAD_NEXT: req_bank=0x%02x addr=0x%08lx time=%.4f\n"),
-                  req_bank, req_addr, timer_stop());
+                  usb_trans.req_bank, usb_trans.req_addr, timer_stop());
 #else
             debug_P(DEBUG_USB,
                   PSTR("USB_BULK_UPLOAD_NEXT: req_bank=0x%02x addr=0x%08lx time=%i\n"),
-                  req_bank, req_addr, timer_stop_int());
+                  usb_trans.req_bank, usb_trans.req_addr, timer_stop_int());
+#endif
+              timer_start();
+#endif
+#endif
+            usb_trans.req_bank++;
+#if DO_SHM
+            shared_memory_write(SHARED_MEM_TX_CMD_BANK_CURRENT, usb_trans.req_bank);
 #endif
-            req_bank++;
-            timer_start();
-            shared_memory_write(SHARED_MEM_TX_CMD_BANK_CURRENT, req_bank);
-            sram_bulk_write_start(req_addr);
-
         }
         ret_len = USB_MAX_TRANS;
         /*
          * -------------------------------------------------------------------------
          */
     } else if (rq->bRequest == USB_BULK_UPLOAD_END) {
-        if (req_state != REQ_STATUS_BULK_UPLOAD) {
+        if (usb_trans.req_state != REQ_STATUS_BULK_UPLOAD) {
             debug_P(DEBUG_USB,
                   PSTR("USB_BULK_UPLOAD_END: ERROR state is not REQ_STATUS_BULK_UPLOAD\n"));
             return 0;
         }
         debug_P(DEBUG_USB, PSTR("USB_BULK_UPLOAD_END:\n"));
-        req_state = REQ_STATUS_IDLE;
+        usb_trans.req_state = REQ_STATUS_IDLE;
         sram_bulk_write_end();
+#if DO_SHM
         shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_END, 0);
+#endif
         ret_len = 0;
 
         /*
          * -------------------------------------------------------------------------
          */
     } else if (rq->bRequest == USB_CRC) {
-        req_addr = rq->wValue.word;
-        req_addr = req_addr << 16;
-        req_addr = req_addr | rq->wIndex.word;
-        debug_P(DEBUG_USB, PSTR("USB_CRC: addr=0x%08lx \n"), req_addr);
-        crc_check_bulk_memory(0x000000, req_addr, req_bank_size);
-        ret_len = 0;
-        /*
-         * -------------------------------------------------------------------------
-         */
-    } else if (rq->bRequest == USB_MODE_SNES) {
-        req_state = REQ_STATUS_SNES;
-        debug_P(DEBUG_USB, PSTR("USB_MODE_SNES:\n"));
+        usb_trans.req_addr = rq->wValue.word;
+        usb_trans.req_addr = usb_trans.req_addr << 16;
+        usb_trans.req_addr = usb_trans.req_addr | rq->wIndex.word;
+        debug_P(DEBUG_USB, PSTR("USB_CRC: addr=0x%08lx \n"), usb_trans.req_addr);
+        crc_check_bulk_memory(0x000000, usb_trans.req_addr, usb_trans.req_bank_size);
         ret_len = 0;
         /*
          * -------------------------------------------------------------------------
          */
     } else if (rq->bRequest == USB_MODE_AVR) {
-        req_state = REQ_STATUS_AVR;
+        usb_trans.req_state = REQ_STATUS_AVR;
         debug_P(DEBUG_USB, PSTR("USB_MODE_AVR:\n"));
         ret_len = 0;
         /*
@@ -239,139 +210,85 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
         /*
          * -------------------------------------------------------------------------
          */
-
-    } else if (rq->bRequest == USB_CRC_ADDR) {
-        req_state = REQ_STATUS_CRC;
-        req_addr = rq->wValue.word;
-        req_addr = req_addr << 16;
-        req_addr = req_addr | rq->wIndex.word;
-        debug_P(DEBUG_USB, PSTR("USB_CRC_ADDR: addr=0x%lx size=%i\n"), req_addr,
-              rq->wLength.word);
-        req_size = rq->wLength.word;
-        req_size = req_size << 2;
-        tx_remaining = 2;
-        debug_P(DEBUG_USB, PSTR("USB_CRC_ADDR: addr=0x%lx size=%li\n"), req_addr,
-              req_size);
-
-        crc = crc_check_memory_range(req_addr, req_size, read_buffer);
-        tx_buffer[0] = crc & 0xff;
-        tx_buffer[1] = (crc >> 8) & 0xff;
-        ret_len = 2;
-        req_state = REQ_STATUS_IDLE;
+    } else if (rq->bRequest == USB_SET_LAODER) {
+        usb_trans.loader_enabled = rq->wValue.word;
+        ret_len = 0;
     }
-
-    usbMsgPtr = data_buffer;
-    return ret_len;             /* default for not implemented requests: return no data back to host */
+    usbMsgPtr = usb_trans.rx_buffer;
+    return ret_len;             
 }
 
-
 /*
  * ------------------------------------------------------------------------- 
  */
 
 
-void usb_connect()
-{
-    uint8_t i = 0;
-    info_P(PSTR("USB init\n"));
-    usbDeviceDisconnect();      /* enforce re-enumeration, do this while */
-    cli();
-    info_P(PSTR("USB disconnect\n"));
-    i = 10;
-    while (--i) {               /* fake USB disconnect for > 250 ms */
-        led_on();
-        _delay_ms(15);
-        led_off();
-        _delay_ms(35);
-    }
-    led_on();
-    usbDeviceConnect();
-    info_P(PSTR("USB connect\n"));
-}
-
-
-void boot_startup_rom()
-{
-    info_P(PSTR("Boot startup rom\n"));
-    info_P(PSTR("Activate AVR bus\n"));
-    avr_bus_active();
-    info_P(PSTR("IRQ off\n"));
-    snes_irq_lo();
-    snes_irq_off();
-    snes_lorom();
-    rle_decode(&_rom, ROM_BUFFER_SIZE, 0x000000);
-    info_P(PSTR("\n"));
-#if 1
-    dump_memory(0x10000 - 0x100, 0x10000);
-#endif
-    snes_hirom();
-    snes_wr_disable();
-    snes_bus_active();
-    info_P(PSTR("Activate SNES bus\n"));
-    send_reset();
-    _delay_ms(50);
-    send_reset();
-    _delay_ms(50);
-}
-
-void banner(){
-    uint8_t i;
-    for (i=0;i<40;i++)
-        info_P(PSTR("\n"));
-    info_P(PSTR(" ________        .__        __    ________               ____  ________\n"));
-    info_P(PSTR(" \\_____  \\  __ __|__| ____ |  | __\\______ \\   _______  _/_   |/  _____/\n"));
-    info_P(PSTR("  /  / \\  \\|  |  \\  |/ ___\\|  |/ / |    |  \\_/ __ \\  \\/ /|   /   __  \\ \n"));
-    info_P(PSTR(" /   \\_/.  \\  |  /  \\  \\___|    <  |    `   \\  ___/\\   / |   \\  |__\\  \\ \n"));
-    info_P(PSTR(" \\_____\\ \\_/____/|__|\\___  >__|_ \\/_______  /\\___  >\\_/  |___|\\_____  / \n"));
-    info_P(PSTR("        \\__>             \\/     \\/        \\/     \\/                 \\/ \n"));
-    info_P(PSTR("\n"));
-    info_P(PSTR("                               www.optixx.org\n"));
-    info_P(PSTR("\n"));
-    info_P(PSTR("System Hw: %s Sw: %s\n"),HW_VERSION,SW_VERSION);
-    
-}
-
 void globals_init(){
-    req_addr = 0;
-    req_addr_end = 0;
-    req_state = REQ_STATUS_IDLE;
-    rx_remaining = 0;
-    tx_remaining = 0;
-    sync_errors = 0;
+    memset(&usb_trans,0,sizeof(usb_transaction_t));
+    
+    usb_trans.req_addr = 0;
+    usb_trans.req_addr_end = 0;
+    usb_trans.req_state = REQ_STATUS_IDLE;
+    usb_trans.rx_remaining = 0;
+    usb_trans.tx_remaining = 0;
+    usb_trans.sync_errors = 0;
+    usb_trans.loader_enabled = 1;
 }
 
 int main(void)
 {
-
+    
+#ifndef NO_DEBUG            
     uart_init();
     stdout = &uart_stdout;
     banner();
+#endif
+    shared_memory_init();
     system_init();
-    snes_reset_hi();
-    snes_reset_off();
+    sram_init();
+    //pwm_init();
     irq_init();
-    boot_startup_rom();
+    boot_startup_rom(50);
     globals_init();
+    //pwm_stop();
     usbInit();
     usb_connect();
+    sei();
     while (1) {
-        avr_bus_active();
-        info_P(PSTR("Activate AVR bus\n"));
-        snes_lorom();
-        info_P(PSTR("Disable SNES WR\n"));
-        snes_wr_disable();
-        sei();
-        info_P(PSTR("USB poll\n"));
-        while (req_state != REQ_STATUS_SNES) {
-            usbPoll();
-        }
-        shared_memory_write(SHARED_MEM_TX_CMD_TERMINATE, 0);
 
-#if SHM_SCRATCHPAD
+        system_set_bus_avr();
+        system_set_wr_disable();
+        info_P(PSTR("USB poll\n"));
+        while (usb_trans.req_state != REQ_STATUS_SNES) {
+            usbPoll();
+#ifdef DO_SHELL
+#ifndef NO_DEBUG            
+            shell_run();
+#endif        
+#endif        
+        }
+        
+#if DO_SHM
+        shared_memory_write(SHARED_MEM_TX_CMD_TERMINATE, 0);
+#endif
+
+#if DO_SHM_SCRATCHPAD
         shared_memory_scratchpad_region_tx_restore();
         shared_memory_scratchpad_region_rx_restore();
 #endif
-        info_P(PSTR("USB poll done\n"));
+
+#if DO_CRC_CHECK     
+        info_P(PSTR("-->CRC Check\n"));
+        crc_check_bulk_memory(0x000000, usb_trans.req_bank_size * usb_trans.req_bank_cnt, usb_trans.req_bank_size);
+#endif        
+        
+        system_set_rom_mode(&usb_trans);
+        system_set_wr_disable();
+        system_set_bus_snes();
+        system_send_snes_reset();
+        irq_stop();
+/*        
+        info_P(PSTR("-->Switch TO SNES\n"));
         set_rom_mode();
         snes_wr_disable();
         info_P(PSTR("Disable SNES WR\n"));
@@ -379,46 +296,29 @@ int main(void)
         info_P(PSTR("Activate SNES bus\n"));
         irq_stop();
         send_reset();
+*/        
         info_P(PSTR("Poll USB\n"));
-        while ((req_state != REQ_STATUS_AVR)) {
+        while ((usb_trans.req_state != REQ_STATUS_AVR)) {
             usbPoll();
+#ifdef DO_SHELL
+#ifndef NO_DEBUG            
+            shell_run();
+#endif        
+#endif        
 
-#ifdef DO_IRQ
-            uint8_t i;
-            uint16_t irq_count = 0;
-            i = 10;
-            while (--i) {
-                _delay_ms(100);
-            }
-            info_P(PSTR("Send IRQ %i\n"), ++irq_count);
-            send_irq();
-#endif
-
-#ifdef DO_BUS_STEALING
-            avr_bus_active();
-            sram_bulk_read_start(0x003000);
-            c = sram_bulk_read();
-            i = 5;
-            while (--i) {
-                _delay_ms(500);
-                info_P(PSTR("Wait to switch to snes mode %i\n"), i);
-            }
-
-            if (req_bank_size == 0x8000) {
-                snes_lorom();
-            } else {
-                snes_hirom();
-            }
-            snes_wr_disable();
-            info_P(PSTR("Disable SNES WR\n"));
-            snes_bus_active();
-            info_P(PSTR("Activate SNES bus\n"));
-            info_P(PSTR("Read 0x3000=%c\n"), c);
-#endif
+        }
+        //info_P(PSTR("-->Switch TO AVR\n"));
+        shared_memory_init();
+        if(usb_trans.loader_enabled) {
+            boot_startup_rom(500);
+        } else {
+            system_set_bus_avr();
+            system_send_snes_reset();
+            //avr_bus_active();
+            //send_reset();
+            
         }
         irq_init();
-        boot_startup_rom();
-        globals_init();
     }
     return 0;
 }

avr/usbload/memmory.txt

@@ -0,0 +1,30 @@
+
+Loader Version 1
+
+DEBUG:
+Bootloader:     4096
+CODE:           24984 
+RAM:            742
+LOADER:         31091
+
+NO_DEBUG:
+Bootloader:     4096
+CODE:           7532 
+RAM:            344
+LOADER:         31091
+ 
+
+Loader Version 2
+
+DEBUG:
+Bootloader:     4096
+CODE:           24984 
+RAM:            742
+LOADER:         58046
+
+NO_DEBUG:
+Bootloader:     4096
+CODE:           7532 
+RAM:            344
+LOADER:         58046
+

avr/usbload/neginf/neginf.c

@@ -0,0 +1,466 @@
+/*
+ *  neginf.c
+ *  neginf -- embedded inflate lib
+ *
+ *  inflate routines
+ */
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "neginf.h"
+#include "neginf_priv.h"
+
+typedef void(*mode_fun)() ;
+
+static neginf_state state;
+static const mode_fun mode_tab[mode_count] = {
+    &await_block,
+    &raw_block_begin,
+    &raw_block_begin2,
+    &raw_block,
+    &fixed_block_begin,
+    &huff_block,
+    &huff_len_addbits,
+    &huff_dist,
+    &huff_dist_addbits,
+    &dynamic_block_begin,
+    &dynamic_read_lc,
+    &dynamic_read_lit_len,
+    &dynamic_read_dist
+};
+
+void neginf_init(nsize start_pos)
+{
+    state.queue_size = 0;
+    state.mode = mode_await_block;
+    state.last_block = 0;
+#ifdef NEGINF_POS_TRACKING
+    state.output_pos = start_pos;
+#endif
+}
+
+
+void neginf_process_byte(nbyte byte)
+{
+    assert(state.queue_size <= 16);
+    state.input_queue |= (byte << state.queue_size);
+    state.queue_size += 8;
+    
+    while(state.queue_size >= 16)
+    {
+        //printf("qsize=%i mode=%i\n",state.queue_size,state.mode);
+        mode_tab[state.mode]();
+    }
+}
+
+#ifdef NEGINF_POS_TRACKING
+nsize neginf_output_position()
+{
+    return state.output_pos;
+}
+#endif
+
+nint lookahead()
+{
+    //printf("lookahead\n");
+    return state.input_queue;
+}
+
+void consume(ntiny amount)
+{
+    //printf("consume %i %i\n",state.queue_size,amount);
+    assert(state.queue_size > amount);
+    state.input_queue >>= amount;
+    state.queue_size -= amount;
+}
+
+void await_block()
+{
+    //printf("wait block\n");
+    if(state.last_block)
+    {
+        neginf_cb_completed();
+        consume(16);
+    }
+    else
+    {
+        nint la = lookahead();
+        state.last_block = la & 1;
+        consume(3);
+        switch(la & 6)
+        {
+            case 0: // 00 uncompressed
+                consume((state.queue_size) & 7); // align to byte
+                state.mode = mode_raw_block_begin;
+                break;
+            case 2: // 01 fixed huffman
+                state.mode = mode_fixed_block_begin;
+                break;
+            case 4: // 10 dynamic huffman
+                state.mode = mode_dynamic_block_begin;
+                break;
+            default:
+                assert(0);
+        }
+    }
+}
+
+void raw_block_begin()
+{
+    //printf("raw block begin\n");
+    state.raw_size = lookahead() & 0xFFFF; // size of raw block
+    consume(16);
+    state.mode = mode_raw_block_begin2;
+}
+
+void raw_block_begin2()
+{
+    //printf("raw block begin2\n");
+    consume(16); // we ignore the inverted size
+    state.mode = mode_raw_block;
+}
+
+void raw_block()
+{
+    //printf("raw block\n");
+    if(state.raw_size == 0)
+    {
+        state.mode = mode_await_block;
+    }
+    else
+    {
+        state.raw_size--;
+        neginf_cb_seq_byte(lookahead() & 0xFF);
+#ifdef NEGINF_POS_TRACKING
+        state.output_pos++;
+#endif
+        consume(8);
+    }
+}
+
+void fixed_block_begin()
+{
+    //printf("fixed block begin\n");
+    
+    nint i = 0;
+    for(; i < 144; i++)
+        state.lit_len_lengths[i] = 8;
+    for(; i < 256; i++)
+        state.lit_len_lengths[i] = 9;
+    for(; i < 280; i++)
+        state.lit_len_lengths[i] = 7;
+    for(; i < 288; i++)
+        state.lit_len_lengths[i] = 8;
+    
+    ntiny j;
+    for(j = 0; i < 32; i++)
+        state.dist_lengths[i] = 5;
+    
+    compute_begins();
+    state.mode = mode_huff_block;
+}
+
+void huff_block()
+{
+    //printf("huff block\n");
+    nint code = lit_len_read();
+    if(code == 256)
+    {
+        state.mode = mode_await_block;
+    }
+    else if(code < 256)
+    {
+        neginf_cb_seq_byte(code);
+#ifdef NEGINF_POS_TRACKING
+        state.output_pos++;
+#endif
+    }
+    else
+    {
+        state.code = code;
+        state.mode = mode_huff_len_addbits;
+    }
+}
+
+void huff_len_addbits()
+{
+    //printf("huff len addbits\n");
+    nint len;
+    nint code = state.code;
+    nint la = lookahead();
+    if(code < 265)
+        len = code - 257 + 3;
+    else if(code < 269)
+    {
+        len = (code - 265) * 2 + 11 + (la & 1);
+        consume(1);
+    }
+    else if(code < 273)
+    {
+        len = (code - 269) * 4 + 19 + (la & 3);
+        consume(2);
+    }
+    else if(code < 277)
+    {
+        len = (code - 273) * 8 + 35 + (la & 7);
+        consume(3);
+    }
+    else if(code < 281)
+    {
+        len = (code - 277) * 16 + 67 + (la & 15);
+        consume(4);
+    }
+    else if(code < 285)
+    {
+        len = (code - 281) * 32 + 131 + (la & 31);
+        consume(5);
+    }
+    else
+    {
+        len = 258;
+    }
+    state.match_len = len;
+    state.mode = mode_huff_dist;
+}
+
+void huff_dist()
+{
+    //printf("huff dist\n");
+    state.tcode = dist_read();
+    state.mode = mode_huff_dist_addbits;
+}
+
+void huff_dist_addbits()
+{
+    //printf("huff addbits\n");
+    nint dist;
+    ntiny code = state.tcode;
+    
+    if(code < 4)
+    {
+        dist = code+1;
+    }
+    else if(code > 29)
+    {
+        assert(0);
+    }
+    else
+    {
+        nint la = lookahead();
+        ntiny len = (code - 2) / 2;
+        dist = ((2 + (code & 1)) << len) + 1 + (((1 << len) - 1) & la);
+        consume(len);
+    }
+    neginf_cb_rel_copy(dist, state.match_len);
+#ifdef NEGINF_POS_TRACKING
+    state.output_pos += state.match_len;
+#endif
+    
+    state.mode = mode_huff_block;
+}
+
+void dynamic_block_begin()
+{
+    nint j;
+    ntiny i;
+    //printf("dynamic block begin\n");
+    for(j = 0; j < 288; j++)
+        state.lit_len_lengths[j] = 0;
+    for(i = 0; i < 32; i++)
+        state.dist_lengths[i] = 0;
+    for(i = 0; i < 19; i++)
+        state.hc_lengths[i] = 0;
+    
+    nint la = lookahead();
+    state.hlit = (la & 31) + 257;
+    state.hdist = ((la >> 5) & 31) + 1;
+    state.hclen = ((la >> 10) & 15) + 4;
+    state.torder = 0;
+    consume(5+5+4);
+    state.mode = mode_dynamic_read_lc;
+}
+
+void dynamic_read_lc()
+{
+    //printf("dynamic read lc\n");
+    if(state.hclen == 0)
+    {
+        compute_begin(state.hc_lengths, state.hc_begins, 19);
+        state.mode = mode_dynamic_read_lit_len;
+        state.order = 0;
+    }
+    else
+    {
+        static const ntiny order[19] = {
+            16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
+        };
+        ntiny i = lookahead() & 7;
+        state.hc_lengths[order[state.torder]] = i;
+        consume(3);
+        
+        state.torder++;
+        state.hclen--;
+    }
+}
+
+void dynamic_read_lit_len()
+{
+    //printf("dynamic read lit len\n");
+    if(state.hlit == 0)
+    {
+        state.mode = mode_dynamic_read_dist;
+        state.order = 0;
+    }
+    else
+    {
+        state.hlit -= lc_read(state.lit_len_lengths);
+    }
+}
+
+void dynamic_read_dist()
+{
+    //printf("dynamic read dist\n");
+    if(state.hdist == 0)
+    {
+        compute_begins();
+        state.mode = mode_huff_block;
+    }
+    else
+    {
+        state.hdist -= lc_read(state.dist_lengths);
+    }
+}
+
+ntiny lc_read(ntiny * lenghts)
+{
+    //printf("read lc\n");
+    ntiny code = huff_read(state.hc_lengths, state.hc_begins, 19);
+    // this reads 7 bits max so we still have 9 bits left in the buffer
+    if(code < 16)
+    {
+        lenghts[state.order] = code;
+        state.order++;
+        return 1;
+    }
+    else if(code == 16)
+    {
+        ntiny i;
+        ntiny copy = (lookahead() & 3) + 3;
+        consume(2);
+        for(i = 0; i < copy; i++)
+            lenghts[state.order + i] = lenghts[state.order - 1];
+        state.order += copy;
+        return copy;
+    }
+    else
+    {
+        ntiny fill;
+        ntiny i;
+        
+        if(code == 17)
+        {
+            fill = (lookahead() & 7) + 3;
+            consume(3);
+        }
+        else
+        {
+            fill = (lookahead() & 127) + 11;
+            consume(7);
+        }
+        for(i = 0; i < fill; i++)
+        {
+            lenghts[state.order] = 0;
+            state.order++;
+        }
+        return fill;
+    }    
+}
+
+
+void compute_begins()
+{
+    //printf("compute begins\n");
+    compute_begin(state.lit_len_lengths, state.lit_len_begins, 288);
+    compute_begin(state.dist_lengths, state.dist_begins, 32);
+}
+
+
+void compute_begin(ntiny * lengths, nint * begins, nint size)
+{
+    ntiny j;
+    nint i;
+    //printf("compute begin\n");
+    for(j = 0; j < 14; j++)
+        begins[j] = 0;
+    for(i = 0; i < size; i++)
+    {
+        nint len = lengths[i];
+        if(len != 0 && len != 15)
+            begins[len-1] += 1 << (15 - len);
+    }
+    nint acc = 0;
+    for(j = 0; j < 14; j++)
+    {
+        nint val = begins[j];
+        acc += val;
+        begins[j] = acc;
+    }    
+}
+
+nint lit_len_read()
+{
+    //printf("lit len read\n");
+    
+    return huff_read(state.lit_len_lengths, state.lit_len_begins, 288);
+}
+
+nint dist_read()
+{
+    //printf("dist read\n");
+    return huff_read(state.dist_lengths, state.dist_begins, 32);
+}
+
+nint huff_read(ntiny * lenghts, nint * begins, nint size)
+{
+    //printf("huff read\n");
+    nint code = 0;
+    ntiny i;
+    for(i = 1; i < 16; i++)
+    {
+        
+        code |= (lookahead() & 1) << (15-i);
+        consume(1);
+        if(i == 15 || code < begins[i-1])
+            break;
+    }
+    code -= begins[i-2];
+    code >>= (15-i);
+    nint j;
+    for(j = 0; j < size; j++)
+    {
+        if(lenghts[j] == i)
+        {
+            if(code == 0)
+                return j;
+            code--;
+        }
+    }
+    //assert(0);
+    return 0; // silent warning
+}
+
+#ifndef NEGINF_USE_SEQ_WRITES
+void neginf_cb_seq_byte(nbyte byte)
+{
+    neginf_cb_byte(state.output_pos, byte);
+}
+#endif
+
+#ifndef NEGINF_USE_REL_COPY
+void neginf_cb_rel_copy(nint distance, nint length)
+{
+    neginf_cb_copy(state.output_pos - distance, state.output_pos, length);
+}
+#endif

avr/usbload/neginf/neginf.h

@@ -0,0 +1,43 @@
+/*
+ *  neginf.h 
+ *  neginf -- embedded inflate lib
+ *
+ *  public header file
+ */
+
+#ifndef NEGINF_H
+#define NEGINF_H
+
+#include "neginf_conf.h"
+
+#if defined(NEGINF_USE_SEQ_WRITES) && defined(NEGINF_USE_REL_COPY)
+#else
+#ifndef NEGINF_POS_TRACKING
+#define NEGINF_POS_TRACKING
+#endif
+#endif
+
+void neginf_init(nsize start_pos);
+void neginf_process_byte(nbyte byte);
+
+#ifdef NEGINF_POS_TRACKING
+nsize neginf_output_position();
+#endif
+
+// callbacks
+
+#ifdef NEGINF_USE_SEQ_WRITES
+void neginf_cb_seq_byte(nbyte byte);
+#else
+void neginf_cb_byte(nsize pos, nbyte byte);
+#endif
+
+#ifdef NEGINF_USE_REL_COPY
+void neginf_cb_rel_copy(nint distance, nint length);
+#else
+void neginf_cb_copy(nsize from, nsize to, nint length);
+#endif
+
+void neginf_cb_completed();
+
+#endif

avr/usbload/neginf/neginf_conf.h

@@ -0,0 +1,48 @@
+/*
+ *  neginf_conf.h
+ *  neginf -- embedded inflate lib
+ *
+ *  configuration header file
+ */
+
+#ifndef NEGINF_CONF_H
+#define NEGINF_CONF_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+
+#define NEGINF_USE_SEQ_WRITES
+//#define NEGINF_USE_REL_COPY
+//#define NEGINF_POS_TRACKING
+
+//#define NEGINF_8BIT
+#define NEGINF_PACKED_STATE
+
+
+#ifdef NEGINF_8BIT
+
+typedef char nbool;
+typedef uint8_t nbyte;
+typedef uint8_t ntiny;
+typedef uint16_t nint;
+typedef uint32_t nbuf;
+
+typedef uint32_t nsize;
+
+#else
+
+typedef int nbool; // boolean
+typedef uint8_t nbyte; // has to be exaclty 8 bit, unsigned
+typedef unsigned int ntiny; // has to be at least 8 bit, unsigned
+typedef unsigned int nint; // has to be at least 16 bit, unsigned
+typedef unsigned int nbuf; // has to be at least 24 bit, unsigned
+
+
+typedef size_t nsize; // has be at least 24 bit, unsigned
+
+#endif
+
+
+
+#endif

avr/usbload/neginf/neginf_priv.h

@@ -0,0 +1,102 @@
+/*
+ *  neginf_priv.h
+ *  neginf -- embedded inflate lib
+ *
+ *  internal header file
+ */
+
+#ifndef NEGINF_PRIV_H
+#define NEGINF_PRIV_H
+
+typedef struct neginf_state_s neginf_state;
+struct neginf_state_s {
+    ntiny queue_size; // 0 .. 24
+    ntiny mode;
+    nbool last_block;
+#ifdef NEGINF_POS_TRACKING
+    nsize output_pos;
+#endif
+    // can be left uninitialized
+    nbuf input_queue; // three input bytes
+    
+    ntiny raw_size;
+    ntiny tcode;
+    nint code;
+    nint match_len;
+    
+    nint order;
+    ntiny torder;
+    nint hlit;
+    ntiny hdist;
+    ntiny hclen;
+    
+    ntiny lit_len_lengths[288];
+    nint lit_len_begins[14];
+    
+    ntiny dist_lengths[32];
+    nint dist_begins[14];
+    
+    ntiny hc_lengths[19];
+    nint hc_begins[14];
+    // what could be saved by limiting this to 7
+    // will be lost due to the extra code i guess
+    
+    
+}
+#ifdef NEGINF_PACKED_STATE
+__attribute__((__packed__))
+#endif
+;
+
+enum neginf_mode {
+    mode_await_block = 0,
+    mode_raw_block_begin,
+    mode_raw_block_begin2,
+    mode_raw_block,
+    mode_fixed_block_begin,
+    mode_huff_block,
+    mode_huff_len_addbits,
+    mode_huff_dist,
+    mode_huff_dist_addbits,
+    mode_dynamic_block_begin,
+    mode_dynamic_read_lc,
+    mode_dynamic_read_lit_len,
+    mode_dynamic_read_dist,
+    mode_count
+};
+
+static void await_block();
+static void raw_block_begin();
+static void raw_block_begin2();
+static void raw_block();
+static void fixed_block_begin();
+static void huff_block();
+static void huff_len_addbits();
+static void huff_dist();
+static void huff_dist_addbits();
+static void dynamic_block_begin();
+static void dynamic_read_lc();
+static void dynamic_read_lit_len();
+static void dynamic_read_dist();
+
+static void compute_begins();
+static void compute_begin(ntiny * lengths, nint * begins, nint size);
+static nint lit_len_read();
+static nint dist_read();
+static nint huff_read(ntiny * lengths, nint * begins, nint size);
+static ntiny lc_read(ntiny * lengths);
+
+static nint lookahead();
+static void consume(ntiny amount);
+
+#ifndef NEGINF_USE_SEQ_WRITES
+static void neginf_cb_seq_byte(nbyte byte);
+#endif
+
+#ifndef NEGINF_USE_REL_COPY
+void neginf_cb_rel_copy(nint distance, nint length);
+#endif
+
+#endif
+
+

avr/usbload/pwm.c

@@ -0,0 +1,104 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+#include <stdint.h>
+#include <string.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#include "pwm.h"
+#include "debug.h"
+#include "info.h"
+#include "sram.h"
+
+
+#define PWM_SINE_MAX 64
+#define PWM_OVERFLOW_MAX 1024
+
+#if 0
+
+uint8_t pwm_sine_table[]  = {
+0x7f,0x8b,0x97,0xa4,0xaf,0xbb,0xc5,0xcf,0xd9,0xe1,0xe8,0xef,0xf4,0xf8,0xfb,0xfd,
+0xfd,0xfd,0xfb,0xf8,0xf3,0xee,0xe7,0xe0,0xd7,0xce,0xc4,0xb9,0xae,0xa2,0x96,0x89,
+0x7e,0x71,0x65,0x59,0x4d,0x42,0x37,0x2d,0x24,0x1c,0x15,0x0f,0x09,0x05,0x03,0x01,
+0x01,0x01,0x03,0x07,0x0b,0x11,0x17,0x1f,0x28,0x31,0x3b,0x46,0x52,0x5e,0x6a,0x76
+};
+
+volatile uint8_t pwm_setting;                   
+volatile uint16_t pwm_overflow;                    
+volatile uint8_t pwm_idx;                    
+volatile uint16_t pwm_overflow_max;                    
+ 
+ ISR(TIMER2_COMPA_vect) {
+    static uint8_t pwm_cnt=0;
+    OCR2A += (uint16_t)T_PWM;
+        
+    if (pwm_setting> pwm_cnt) 
+        led_pwm_on();
+    else
+        led_pwm_off();
+    
+    if (pwm_cnt==(uint8_t)(PWM_STEPS-1))
+        pwm_cnt=0;
+    else
+        pwm_cnt++;
+    if (pwm_overflow_max == pwm_overflow++ ){
+        pwm_setting = pwm_sine_table[pwm_idx++];
+        pwm_overflow = 0;
+        if (PWM_SINE_MAX == pwm_idx)
+            pwm_idx = 0;
+    }
+}
+
+void pwm_speed(uint16_t val) {
+    pwm_overflow_max = val; 
+}
+
+void pwm_speed_slow(uint16_t val) {
+    pwm_overflow_max = PWM_OVERFLOW_MAX * 2 ; 
+}
+
+void pwm_speed_fast(uint16_t val) {
+    pwm_overflow_max = PWM_OVERFLOW_MAX / 2; 
+}
+
+void pwm_speed_normal(uint16_t val) {
+    pwm_overflow_max = PWM_OVERFLOW_MAX; 
+}
+
+
+void pwm_set(uint8_t val) {
+    pwm_setting = val;
+}
+
+void pwm_stop(void) {
+    while(pwm_setting!=0xfd);
+    TIMSK2 = 0;
+}
+
+void pwm_init(void) {
+    pwm_overflow_max = PWM_OVERFLOW_MAX;
+    pwm_setting = 0x7f;
+    pwm_overflow = 0;
+    //cli();
+    TCCR2B = 1;         
+    TIMSK2 |= (1<<OCIE2A);       
+    sei();                  
+}
+#endif

avr/usbload/pwm.h

@@ -0,0 +1,37 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+
+#ifndef __PWM_H__
+#define __PWM_H__
+
+#define F_PWM 100                       // PWM-Frequenz in Hz
+#define PWM_STEPS 256                   // PWM-Schritte pro Zyklus(1..256)
+ 
+#define T_PWM (F_CPU/(F_PWM*PWM_STEPS)) // Systemtakte pro PWM-Takt
+ 
+#if (T_PWM<(93+5))
+    #error T_PWM zu klein, F_CPU muss vergrösst werden oder F_PWM oder PWM_STEPS verkleinert werden
+#endif
+
+ void pwm_init(void);
+void pwm_stop(void);
+ 
+ 
+#endif

avr/usbload/requests.h

@@ -38,5 +38,23 @@
 #define USB_MODE_SNES           10
 #define USB_MODE_AVR            11
 #define USB_AVR_RESET           12
+#define USB_SET_LAODER          13
+
+typedef struct usb_transaction_t {
+    uint32_t req_addr;
+    uint32_t req_addr_end;
+    uint8_t req_bank;
+    uint32_t req_bank_size;
+    uint16_t req_bank_cnt;
+    uint8_t req_percent;
+    uint8_t req_percent_last;
+    uint8_t req_state;
+    uint8_t rx_remaining;
+    uint8_t tx_remaining ;
+    uint16_t sync_errors;
+    uint8_t tx_buffer[32];
+    uint8_t rx_buffer[8];
+    uint8_t loader_enabled;
+} usb_transaction_t;
 
 #endif /* __REQUESTS_H_INCLUDED__ */

avr/usbload/ringbuffer.c

@@ -0,0 +1,126 @@
+// AT90USB/ringbuffer.c
+// Simple Ring-Buffer (FIFO) for Elements of type char
+// S. Salewski, 19-MAR-2007
+
+/*
+t-> o
+    o <-w
+    x 
+    x <-r
+b-> x
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include "ringbuffer.h"
+#define memory_size         65536
+#define t &buf[ringbuffer_size - 1]
+#define b &buf[0]
+
+char buf[ringbuffer_size];
+int rb_count;
+char *memory;
+int pos_mem;
+int pos_head;
+
+
+//char *t = &buf[ringbuffer_size - 1];
+//char *b = &buf[0];
+
+char *r; // position from where we can read (if rb_count > 0)
+char *w; // next free position (if rb_count < ringbuffer_size))
+char *o; // output pointer
+
+void rb_init()
+{
+    r = b;
+    w = b;
+    o = b;
+    rb_count = 0;
+    memory = (char*)malloc(memory_size);
+    pos_mem = 0;
+    pos_head = 0;
+}
+
+
+void rb_dump()
+{
+    int i;
+    printf("b=0x%02x t=0x%02x w=0x%02x o=0x%02x\n",*b,*t,*w,*o);
+    for (i=0; i<ringbuffer_size; i++)
+        printf("%02i 0x%02x\n",i, buf[i]);
+
+}
+void rb_flush(){
+    FILE *file;
+    while(!rb_isempty()){
+        memory[pos_mem++] = rb_get();
+    }
+    printf("write out.smc\n");
+    file = fopen("out.smc","w");
+    fwrite(memory,memory_size,1,file);
+    fclose(file);
+}
+
+char rb_get(void)
+{
+    rb_count--;
+    if (r > t)
+        r = b;
+    return *r++;
+}
+
+
+char rb_read(int pos)
+{
+    char *p;
+    printf("rb_read: pos_mem=%06i pos_head=%06i pos=%06i\n",
+    	pos_mem, pos_head,pos);
+    
+    if ( pos_head - pos > ringbuffer_size){
+        printf("rb_read: memory[%i]=0x%02x \n", 
+            pos,
+            memory[pos]);
+        return memory[pos];
+    }
+    if (w - index >= b)
+        p = w - index;
+    else
+        p = b + (b - ( w - index ));
+    return *p;
+}
+
+void rb_copy(int from,int to,int len){
+    int i;
+    char c;
+    for (i = from; i< to; i++){
+        c = rb_read(i);
+        rb_put(c);
+    }
+}
+
+
+
+
+
+void rb_put(char el)
+{
+    pos_head++;
+    rb_count++;
+
+    if ( rb_count > ringbuffer_size){
+        rb_dump();
+        memory[pos_mem++]=*o++;
+        if (o > t){
+            o = b;
+        }
+    }
+    printf("rb_count=%i pos_head=0x%06x add_mem=0x%06x\n",rb_count, pos_head,pos_mem);
+
+    if (w > t){
+        w = b;
+    }
+    *w++ = el;
+}

avr/usbload/ringbuffer.h

@@ -0,0 +1,19 @@
+
+#ifndef _RING_BUFFER_H_
+#define _RING_BUFFER_H_
+
+
+#define ringbuffer_size 8
+
+extern int rb_count;
+
+#define rb_free() (ringbuffer_size - rb_count)
+#define rb_isfull() (rb_count == ringbuffer_size)
+#define rb_isempty() (rb_count == 0)
+
+void rb_init(void);
+void rb_put(char el);
+char rb_get(void);
+void rb_flush(void);
+
+#endif

avr/usbload/rle.c

@@ -32,14 +32,14 @@
 
 #define RUNCHAR 0x90
 
-uint8_t rle_decode(PGM_VOID_P in_addr, int32_t in_len, uint32_t out_addr)
+#if 0
+
+uint32_t rle_decode(PGM_VOID_P in_addr, int32_t in_len, uint32_t out_addr)
 {
     uint8_t in_byte, in_repeat, last_byte;
-    uint32_t out_len, out_len_left;
     info_P(PSTR("RLE decode len=%li addr=0x%08lx\n"), in_len, out_addr);
     last_byte = 0;
 
-    out_len_left = out_len;
     sram_bulk_write_start(out_addr);
 #define INBYTE(b) \
 	do { \
@@ -99,5 +99,8 @@ uint8_t rle_decode(PGM_VOID_P in_addr, int32_t in_len, uint32_t out_addr)
         last_byte = in_byte;
     }
     sram_bulk_write_end();
-    return 0;
+    info_P(PSTR("\nDone addr=0x%08lx\n"), out_addr);
+    return out_addr;
 }
+
+#endif

avr/usbload/rle.h

@@ -23,6 +23,6 @@
 
 #include <avr/pgmspace.h>
 
-uint8_t rle_decode(PGM_VOID_P in_addr, uint32_t in_len, uint32_t out_addr);
+uint32_t rle_decode(PGM_VOID_P in_addr, uint32_t in_len, uint32_t out_addr);
 
 #endif

avr/usbload/shared_memory.c

@@ -31,6 +31,8 @@
 #include "debug.h"
 #include "dump.h"
 #include "info.h"
+#include "crc.h"
+
 
 uint8_t irq_addr_lo;
 uint8_t irq_addr_hi;
@@ -46,29 +48,43 @@ uint8_t scratchpad_locked_rx = 1;
 uint8_t scratchpad_locked_tx = 1;
 
 
-uint8_t shared_memory_scratchpad_region_save_helper(uint32_t addr){
+void shared_memory_init(void){
+    scratchpad_locked_rx = 1;
+    scratchpad_locked_tx = 1;
     
-    if(addr > (SHARED_MEM_TX_LOC_STATE +  SHARED_MEM_TX_LOC_SIZE) &&  scratchpad_locked_tx){
+}
+
+
+uint8_t shared_memory_scratchpad_region_save_helper(uint32_t addr){
+
+
+
+#if DO_SHM_SCRATCHPAD    
+    if(addr > (SHARED_MEM_TX_LOC_STATE +  (SHARED_MEM_TX_LOC_SIZE )) &&  scratchpad_locked_tx){
         debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_save_helper: open tx addr=0x%06lx\n"),addr);
         shared_memory_scratchpad_region_tx_save();
         return 0;
     }
-    if(addr > (SHARED_MEM_RX_LOC_STATE +  SHARED_MEM_RX_LOC_SIZE) &&  scratchpad_locked_rx){
+    if(addr > (SHARED_MEM_RX_LOC_STATE +  ( SHARED_MEM_RX_LOC_SIZE )) &&  scratchpad_locked_rx){
         debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_save_helper: open rx addr=0x%06lx\n"),addr);
         shared_memory_scratchpad_region_rx_save();
         return 0;
     }
+#endif    
     return 1;
 }
 
 
 void shared_memory_scratchpad_region_tx_save()
 {
-#if 0 
+    sram_bulk_addr_save();
+
+#if SHARED_SCRATCHPAD_CRC    
     uint16_t crc;
     crc = crc_check_bulk_memory((uint32_t)SHARED_MEM_TX_LOC_STATE, 
         (uint32_t)(SHARED_MEM_TX_LOC_STATE + SHARED_MEM_TX_LOC_SIZE), 0x8000);
     debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_save: crc=%x\n"),crc);
+    
 #endif
 
     debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_save: unlock\n"));
@@ -76,21 +92,28 @@ void shared_memory_scratchpad_region_tx_save()
         (uint32_t)SHARED_MEM_TX_LOC_SIZE);
     scratchpad_locked_tx = 0;
 
-#if 0 
+#if SHARED_SCRATCHPAD_CRC    
+    do_crc_update(0, scratchpad_region_tx,SHARED_MEM_TX_LOC_SIZE);
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_save: crc=%x\n"),crc);
+#endif
+
+#if SHARED_SCRATCHPAD_DUMP
     dump_packet(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_LOC_SIZE, scratchpad_region_tx);
     dump_memory(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_LOC_STATE + SHARED_MEM_TX_LOC_SIZE);
 #endif
+    sram_bulk_addr_restore();
     
-
 }
 
 void shared_memory_scratchpad_region_rx_save()
 {
-#if 0    
+
+    sram_bulk_addr_save();
+#if SHARED_SCRATCHPAD_CRC    
     uint16_t crc;
     crc = crc_check_bulk_memory((uint32_t)SHARED_MEM_RX_LOC_STATE, 
         (uint32_t)(SHARED_MEM_RX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE), 0x8000);
-    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_save: crc=%x\n"),crc);
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_save: crc=%x\n"),crc);
 #endif
 
     debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_save: unlock\n"));
@@ -98,27 +121,42 @@ void shared_memory_scratchpad_region_rx_save()
         (uint32_t)SHARED_MEM_RX_LOC_SIZE);
     scratchpad_locked_rx = 0;
 
-#if 0    
-    dump_packet(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_RX_LOC_SIZE, scratchpad_region_tx);
+#if SHARED_SCRATCHPAD_CRC    
+    do_crc_update(0, scratchpad_region_rx,SHARED_MEM_RX_LOC_SIZE);
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_save: crc=%x\n"),crc);
+#endif
+
+#if SHARED_SCRATCHPAD_DUMP    
+    dump_packet(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_RX_LOC_SIZE, scratchpad_region_rx);
     dump_memory(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_RX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE);
 #endif
+    sram_bulk_addr_restore();
+
 }
 
 void shared_memory_scratchpad_region_tx_restore()
 {
     if (scratchpad_locked_tx)
         return;
-
     debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_restore: lock\n"));
-    sram_bulk_copy_from_buffer((uint32_t)SHARED_MEM_TX_LOC_STATE,scratchpad_region_tx,
-        (uint32_t)SHARED_MEM_TX_LOC_SIZE);
-    scratchpad_locked_tx = 1;
-#if 0    
-    dump_packet(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_LOC_SIZE, scratchpad_region_tx);
+
+#if SHARED_SCRATCHPAD_DUMP    
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_restore: memory\n"));
     dump_memory(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_LOC_STATE + SHARED_MEM_TX_LOC_SIZE);
 #endif
 
-#if 0    
+    sram_bulk_copy_from_buffer((uint32_t)SHARED_MEM_TX_LOC_STATE,scratchpad_region_tx,
+        (uint32_t)SHARED_MEM_TX_LOC_SIZE);
+    scratchpad_locked_tx = 1;
+
+#if SHARED_SCRATCHPAD_DUMP    
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_restore: buffer\n"));
+    dump_packet(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_LOC_SIZE, scratchpad_region_tx);
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_restore: memory\n"));
+    dump_memory(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_LOC_STATE + SHARED_MEM_TX_LOC_SIZE);
+#endif
+
+#if SHARED_SCRATCHPAD_CRC    
     uint16_t crc;
     crc = crc_check_bulk_memory((uint32_t)SHARED_MEM_TX_LOC_STATE, 
         (uint32_t)(SHARED_MEM_TX_LOC_STATE + SHARED_MEM_TX_LOC_SIZE), 0x8000);
@@ -131,17 +169,27 @@ void shared_memory_scratchpad_region_rx_restore()
 {
     if (scratchpad_locked_rx)
         return;
-    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_tx_save: lock\n"));
+    
+
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_restore: lock\n"));
+
+#if SHARED_SCRATCHPAD_DUMP    
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_restore: memory\n"));
+    dump_memory(SHARED_MEM_RX_LOC_STATE - 0x10, SHARED_MEM_RX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE);
+#endif
+    
     sram_bulk_copy_from_buffer((uint32_t)SHARED_MEM_RX_LOC_STATE,scratchpad_region_rx,
         (uint32_t)SHARED_MEM_RX_LOC_SIZE);
     scratchpad_locked_rx = 1;
 
-#if 0    
-    dump_packet(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_TX_LOC_SIZE, scratchpad_region_rx);
-    dump_memory(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_TX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE);
+#if SHARED_SCRATCHPAD_DUMP    
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_restore: buffer\n"));
+    dump_packet(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_RX_LOC_SIZE, scratchpad_region_rx);
+    debug_P(DEBUG_SHM, PSTR("shared_memory_scratchpad_region_rx_restore: memory\n"));
+    dump_memory(SHARED_MEM_RX_LOC_STATE - 0x10, SHARED_MEM_RX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE);
 #endif
 
-#if 1    
+#if SHARED_SCRATCHPAD_CRC
     uint16_t crc;
     crc = crc_check_bulk_memory((uint32_t)SHARED_MEM_RX_LOC_STATE, 
         (uint32_t)(SHARED_MEM_RX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE), 0x8000);
@@ -181,16 +229,24 @@ void shared_memory_irq_restore()
 
 void shared_memory_write(uint8_t cmd, uint8_t value)
 {
-
-    if (scratchpad_locked_tx) 
+#if DO_SHM
+#if DO_SHM_SCRATCHPAD    
+    if (scratchpad_locked_tx){ 
         debug_P(DEBUG_SHM, PSTR("shared_memory_write:  locked_tx\n"));
-    
+        return;
+    }
+#endif
     debug_P(DEBUG_SHM, PSTR("shared_memory_write:  0x%04x=0x%02x 0x%04x=0x%02x \n"),
          SHARED_MEM_TX_LOC_CMD, cmd, SHARED_MEM_TX_LOC_PAYLOAD, value);
 
     sram_bulk_addr_save();
+
+#if (DO_SHM_SCRATCHPAD==0)    
     shared_memory_scratchpad_tx_save();
+#endif
+#if SHARED_MEM_SWITCH_IRQ    
     shared_memory_irq_hook();
+#endif
 
     sram_write(SHARED_MEM_TX_LOC_STATE, SHARED_MEM_TX_SNES_ACK);
     sram_write(SHARED_MEM_TX_LOC_CMD, cmd);
@@ -216,10 +272,14 @@ void shared_memory_write(uint8_t cmd, uint8_t value)
     snes_lorom();
     snes_wr_disable();
 
+#if (DO_SHM_SCRATCHPAD==0)    
     shared_memory_scratchpad_tx_restore();
+#endif
+#if SHARED_MEM_SWITCH_IRQ    
     shared_memory_irq_restore();
-    //sram_bulk_addr_restore();
-
+#endif
+    sram_bulk_addr_restore();
+#endif
 }
 
 void shared_memory_yield()
@@ -239,16 +299,20 @@ void shared_memory_yield()
 int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer)
 {
     uint8_t state;
-    
-    if (scratchpad_locked_rx) 
+#if DO_SHM
+#if DO_SHM_SCRATCHPAD    
+    if (scratchpad_locked_rx){ 
         debug_P(DEBUG_SHM, PSTR("shared_memory_write:  locked_tx\n"));
-
+        return 1;
+    }
+#endif
+    sram_bulk_addr_save();
 
     state = sram_read(SHARED_MEM_RX_LOC_STATE);
     if (state != SHARED_MEM_RX_AVR_ACK){
+        sram_bulk_addr_restore();
         return 1;
     }
-    sram_bulk_addr_save();
 
     *cmd = sram_read(SHARED_MEM_RX_LOC_CMD);
     *len = sram_read(SHARED_MEM_RX_LOC_LEN);
@@ -276,5 +340,6 @@ int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer)
     snes_lorom();
     snes_wr_disable();
     sram_bulk_addr_restore();
+#endif
     return 0;
 }

avr/usbload/shared_memory.h

@@ -60,8 +60,11 @@
 #define SHARED_IRQ_HANDLER_LO               0x0ffe4
 #define SHARED_IRQ_HANDLER_HI               0x0ffe5
 
+#define SHARED_SCRATCHPAD_DUMP              0
+#define SHARED_SCRATCHPAD_CRC               0
+        
 
-
+void shared_memory_init(void);
 uint8_t shared_memory_scratchpad_region_save_helper(uint32_t addr);
 void shared_memory_scratchpad_region_tx_save();
 void shared_memory_scratchpad_region_tx_restore();

avr/usbload/shell.c

@@ -0,0 +1,487 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+#include <stdint.h>
+#include <string.h>
+#include <avr/io.h>
+#include <stdlib.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>         
+#include <avr/pgmspace.h>       
+#include <avr/eeprom.h>
+
+
+#include "pwm.h"
+#include "debug.h"
+#include "info.h"
+#include "sram.h"
+#include "util.h"
+#include "uart.h"
+#include "dump.h"
+#include "irq.h"
+#include "config.h"
+#include "crc.h"
+#include "command.h"
+#include "shared_memory.h"
+#include "system.h"
+
+ 
+extern system_t system;
+
+uint8_t command_buf[RECEIVE_BUF_LEN];
+uint8_t	recv_buf[RECEIVE_BUF_LEN];
+
+volatile uint8_t	recv_counter = 0;
+volatile uint8_t	cr = 0;
+
+uint8_t *token_ptr;
+
+#ifdef DO_SHELL
+
+uint8_t *get_token(void)
+{
+ 	uint8_t *p = token_ptr;
+ 	while (*p == ' ')
+ 		p++;
+ 	if (*p == '\0')
+ 		return NULL;
+ 	token_ptr = p;
+ 	do {
+ 		token_ptr++;
+ 		if (*token_ptr == ' ' || *token_ptr == '\n' || *token_ptr == '\r') {
+ 			*token_ptr++ = '\0';
+ 			break;
+ 		}
+ 	} while (*token_ptr != ' ' && *token_ptr != '\n' && *token_ptr != '\r');
+ 	return p;
+}
+
+uint8_t get_dec(uint32_t *decval)
+{
+ 	const uint8_t *t;
+ 	t = get_token();
+ 	if (t != NULL) {
+ 		int x = util_sscandec(t);
+ 		if (x < 0)
+ 			return 0;
+ 		*decval = x;
+ 		return 1;
+ 	}
+ 	return 0;
+ }
+
+uint8_t parse_hex(const uint8_t *s, uint32_t *hexval)
+{
+ 	uint32_t x = util_sscanhex(s);
+ 	*hexval = (uint32_t) x;
+ 	return 1;
+ }
+
+uint8_t get_hex(uint32_t *hexval)
+{
+ 	const uint8_t *t;
+ 	t = get_token();
+ 	if (t != NULL)
+ 		return parse_hex(t, hexval);
+ 	return 0;
+ }
+
+uint8_t get_hex_arg2(uint32_t *hexval1, uint32_t *hexval2)
+{
+ 	return get_hex(hexval1) && get_hex(hexval2);
+}
+
+uint8_t get_hex_arg3(uint32_t *hexval1, uint32_t *hexval2, uint32_t *hexval3)
+{
+ 	return get_hex(hexval1) && get_hex(hexval2) && get_hex(hexval3);
+}
+
+static uint8_t get_int32(uint32_t *val)
+ {
+ 	if (!get_hex(val)){
+ 		info_P(PSTR("Invalid argument!\n"));
+        return 0;
+    } else {
+        return 1;
+    }
+ }
+
+ static uint8_t get_int8(uint8_t *val)
+ {
+ 	uint32_t ret;
+ 	if (!get_hex(&ret) ||ret > 0xff){
+ 		info_P(PSTR("Invalid argument!\n"));
+        return 0;
+ 	}else{
+ 		*val = (uint8_t)ret;
+        return 1;
+    }
+ }
+
+ static int get_bool(void)
+ {
+ 	const uint8_t *t;
+ 	t = get_token();
+ 	if (t != NULL) {
+ 		int result = util_sscanbool(t);
+ 		if (result >= 0)
+ 			return result;
+ 	}
+ 	info_P(PSTR("Invalid argument (should be 0 or 1)!\n"));
+ 	return -1;
+ } 
+ void prompt(void){
+     
+     uart_putc('\r');
+     uart_putc('\n');
+     uart_putc('>');
+     
+ }
+ 
+ISR(USART0_RX_vect)		
+{
+  UCSR0B &= (255 - (1<<RXCIE0));//	Interrupts disable for RxD
+  sei();
+  if(recv_counter == (sizeof(recv_buf)-1)) {
+    cr=1;
+    recv_buf[recv_counter]='\0';
+    recv_counter=0;
+    prompt();
+  }
+  recv_buf[recv_counter] = UDR0;
+  uart_putc(recv_buf[recv_counter]); 
+  if (recv_buf[recv_counter] == 0x0d) {
+    /* recv_buf[recv_counter] = 0; */
+    cr = 1;				
+    recv_buf[++recv_counter]='\0';  
+    recv_counter = 0;
+    prompt();
+  } else {
+    // we accept backspace or delete
+    if ((recv_buf[recv_counter] == 0x08 || recv_buf[recv_counter] == 0x7f) && recv_counter > 0) {
+      recv_counter--;
+    } else {
+      recv_counter++;
+    }
+  }
+  UCSR0B |= (1<<RXCIE0);
+}
+
+enum cmds { 
+            CMD_DUMP,
+            CMD_DUMPVEC,
+            CMD_DUMPHEADER,
+            CMD_CRC,
+            CMD_EXIT,
+            CMD_RESET,
+            CMD_RESETSNIFF,
+            CMD_IRQ,
+            CMD_AVR,
+            CMD_SNES,
+            CMD_LOROM,
+            CMD_HIROM,
+            CMD_WR,
+            CMD_SHMWR,
+            CMD_SHMSAVE,
+            CMD_SHMRESTORE,
+            CMD_LOADER,
+            CMD_RECONNECT,
+            CMD_STATUS,
+            CMD_SYS,
+            CMD_HELP
+};
+
+uint8_t cmdlist[][CMD_HELP] PROGMEM = {
+            {"DUMP"},
+            {"DUMPVEC"},
+            {"DUMPHEADER"},
+            {"CRC"},
+            {"EXIT"},
+            {"RESET"},
+            {"RESETSNIFF"},
+            {"IRQ"},
+            {"AVR"},
+            {"SNES"},
+            {"LOROM"},
+            {"HIROM"},
+            {"WR"},
+            {"SHMWR"},
+            {"SHMSAVE"},
+            {"SHMRESTORE"},
+            {"LOADER"},
+            {"RECONNECT"},
+            {"STATUS"},
+            {"SYS"},
+            {"HELP"},
+        };
+
+
+void shell_help(void){
+	uint8_t i;
+    info_P(PSTR("\n"));
+    for (i=CMD_DUMP; i<CMD_HELP; i++){
+        info_P((PGM_P)cmdlist[i]);
+        info_P(PSTR("\n"));
+        
+    }
+}
+
+
+void shell_run(void)
+{
+	uint8_t *t;
+    uint32_t arg1;
+    uint32_t arg2;
+    uint32_t arg3;
+	uint16_t crc;
+    uint16_t offset;
+    uint16_t i;
+    uint8_t c;
+    
+	if (!cr)
+        return;
+    cr=0;
+	strcpy((char*)command_buf, (char*)recv_buf);
+	
+	token_ptr = command_buf;
+	t = get_token();
+	
+	if (t == NULL)
+        shell_help();
+
+	util_strupper(t);
+
+	if (strcmp_P((const char*)t,(PGM_P)cmdlist[CMD_DUMP]) == 0) {
+        if (get_hex_arg2(&arg1,&arg2))
+            dump_memory(arg1,arg2);
+        else 
+            info_P(PSTR("DUMP <start addr> <end addr>\n"));
+    
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_CRC]) == 0) {
+        if (get_hex_arg2(&arg1,&arg2)){
+            crc = crc_check_bulk_memory(arg1,arg2,0x8000);
+            info_P(PSTR("0x%06lx - 0x%06lx crc=0x%04x\n"),arg1,arg2,crc);
+        } else 
+            info_P(PSTR("CRC <start addr> <end addr>\n"));
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_EXIT]) == 0) {
+        leave_application();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_RESET]) == 0) {
+        system_send_snes_reset();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_IRQ]) == 0) {
+        info_P(PSTR("Send IRQ\n"));
+        snes_irq_on();
+        snes_irq_lo();
+        _delay_us(20);
+        snes_irq_hi();
+        snes_irq_off();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_AVR]) == 0) {
+         //info_P(PSTR("Activate AVR bus\n"));
+         //avr_bus_active();
+         //snes_irq_lo();
+         //snes_irq_off();
+        system_set_bus_avr();
+        snes_irq_lo();
+        system_snes_irq_off();
+        
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_SNES]) == 0) {
+        //info_P(PSTR("Activate SNES bus\n"));
+        //snes_irq_lo();
+        //snes_irq_off();
+        //snes_wr_disable();
+        //snes_bus_active();
+        snes_irq_lo();
+        system_snes_irq_off();
+        system_set_wr_disable();
+        system_set_bus_snes();
+        
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_LOROM]) == 0) {
+        //info_P(PSTR("Set LOROM\n"));
+        //snes_lorom();
+        //snes_wr_disable();
+        system_set_rom_lorom();
+        system_set_wr_disable();
+        
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_HIROM]) == 0) {
+        //info_P(PSTR("Set HIROM\n"));
+        //snes_hirom();
+        //snes_wr_disable();
+        system_set_rom_hirom();
+        system_set_wr_disable();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_WR]) == 0) {
+        arg1 = get_bool();
+        if(arg1==1){
+            info_P(PSTR("Set WR enable"));
+            snes_wr_enable();
+        }else if (arg1==0){
+            info_P(PSTR("Set WR disable"));
+            snes_wr_disable();
+        }
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_RESETSNIFF]) == 0) {
+        arg1 = get_bool();
+        if(arg1==1){
+            info_P(PSTR("Start Reset sniffer"));
+            irq_init();
+        }else if (arg1==0){
+            info_P(PSTR("Stop Reset sniffer"));
+            irq_stop();
+        }
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_DUMPVEC]) == 0) {
+        uint16_t offset;
+    	if (system.rom_mode==LOROM)
+            offset = 0x8000;
+    	else
+            offset = 0x0000;
+    	
+        info_P(PSTR("ABORT	0x%04x 0x%04x\n"), (0xFFE8 - offset),sram_read16_be(0xFFE8 - offset));
+        info_P(PSTR("BRK	0x%04x 0x%04x\n"), (0xFFE6 - offset),sram_read16_be(0xFFE6 - offset));
+        info_P(PSTR("COP	0x%04x 0x%04x\n"), (0xFFE4 - offset),sram_read16_be(0xFFE4 - offset));
+        info_P(PSTR("IRQ	0x%04x 0x%04x\n"), (0xFFEE - offset),sram_read16_be(0xFFEE - offset));
+        info_P(PSTR("NMI	0x%04x 0x%04x\n"), (0xFFEA - offset),sram_read16_be(0xFFEA - offset));
+        info_P(PSTR("RES	0x%04x 0x%04x\n"), (0xFFFC - offset),sram_read16_be(0xFFFC - offset));
+    	
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_DUMPHEADER]) == 0) {
+        
+    	if (system.rom_mode==LOROM)
+            offset = 0x8000;
+    	else
+            offset = 0x0000;
+    	/*
+    	#  $ffc0..$ffd4 => Name of the ROM, typically in ASCII, using spaces to pad the name to 21 bytes.
+        # $ffd5 => ROM layout, typically $20 for LoROM, or $21 for HiROM. Add $10 for FastROM.
+        # $ffd6 => Cartridge type, typically $00 for ROM only, or $02 for ROM with save-RAM.
+        # $ffd7 => ROM size byte.
+        # $ffd8 => RAM size byte.
+        # $ffd9 => Country code, which selects the video in the emulator. Values $00, $01, $0d use NTSC. Values in range $02..$0c use PAL. Other values are invalid.
+        # $ffda => Licensee code. If this value is $33, then the ROM has an extended header with ID at $ffb2..$ffb5.
+        # $ffdb => Version number, typically $00.
+        # $ffdc..$ffdd => Checksum complement, which is the bitwise-xor of the checksum and $ffff.
+        # $ffde..$ffdf => SNES checksum, an unsigned 16-bit checksum of bytes.
+        # $ffe0..$ffe3 => Unknown.
+        */
+        info_P(PSTR("NAME	0x%04x "), (0xffc0 - offset));
+        for(arg1=(0xffc0 - offset); arg1<(0xffc0 - offset + 21);arg1++){
+            c = sram_read(arg1);
+            if (c>0x1f && c<0x7f)
+                printf("%c",c);
+        }
+        printf("\n");
+        c = sram_read(0xffd5 - offset);
+        info_P(PSTR("LAYOUT	0x%04x "), (0xffd5 - offset));
+        
+        switch(c){
+            case 0x20:
+                info_P(PSTR("LoROM, not fast\n"));
+                break;
+            case 0x21:
+                info_P(PSTR("HiRom, not fast\n"));
+                break;
+            case 0x30:
+                info_P(PSTR("LoROM, fast\n"));
+                break;
+            case 0x31:
+                info_P(PSTR("HiRom, fast\n"));
+                break;
+            default:
+                info_P(PSTR("Unkown 0x%02x\n"),c);
+                break;
+        }
+
+        c = sram_read(0xffd6 - offset);
+        info_P(PSTR("TYPE	0x%04x "), (0xffd6 - offset),c);
+        switch(c){
+            case 0x00:
+                info_P(PSTR("Rom\n"));
+                break;
+            case 0x01:
+                info_P(PSTR("Rom + Sram\n"));
+                break;
+            case 0x02:
+                info_P(PSTR("Rom + Sram + Battery\n"));
+                break;
+            case 0x13:
+                info_P(PSTR("SuperFX\n"));
+                break;
+            case 0x14:
+                info_P(PSTR("SuperFX\n"));
+                break;
+            case 0x15:
+                info_P(PSTR("SuperFX + Sram\n"));
+                break;
+            case 0x1a:
+                info_P(PSTR("SuperFX + Sram\n"));
+                break;
+            case 0x34:
+                info_P(PSTR("SA-1"));
+                break;
+            case 0x35:
+                info_P(PSTR("SA-1"));
+                break;
+            default:
+                info_P(PSTR("Unkown 0x%02x\n"),c);
+                break;
+        }
+        arg1 = ( 2 << ( sram_read(0xffd7 - offset) - 1 ));    
+        info_P(PSTR("ROM	0x%04x %li MBit ( %li KiB)\n"), (0xffd7 - offset), (arg1 / 128), arg1);
+        arg1 = ( 2 << ( sram_read(0xffd8 - offset) - 1 ));
+        info_P(PSTR("RAM	0x%04x %li KiB\n"), (0xffd8 - offset), arg1);
+
+        info_P(PSTR("CCODE	0x%04x "), (0xffd9 - offset));
+        c = sram_read(0xffd9 - offset);
+        if (c==0x00 || c==0x01 || 0x0d )
+            info_P(PSTR("NTSC\n"));
+        else if (c>=0x02 || c<=0x0c )
+            info_P(PSTR("PAL\n"));
+        else
+            info_P(PSTR("Unkown 0x%02x\n"),c);
+        
+        info_P(PSTR("LIC	0x%04x 0x%02x\n"), (0xffda - offset),sram_read(0xffda - offset));
+        info_P(PSTR("VER	0x%04x 0x%02x\n"), (0xffdb - offset),sram_read(0xffdb - offset));
+        info_P(PSTR("SUM1	0x%04x 0x%04x\n"), (0xffdc - offset),sram_read16_be(0xffdc - offset));
+        info_P(PSTR("SUM2	0x%04x 0x%04x\n"), (0xffde - offset),sram_read16_be(0xffde - offset));
+    	
+    
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_SHMWR]) == 0) {
+        if (get_hex_arg2(&arg1,&arg2))
+            shared_memory_write((uint8_t)arg1, (uint8_t)arg1);
+        else 
+            info_P(PSTR("SHMWR <command> <value>\n"));
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_SHMSAVE]) == 0) {
+        shared_memory_scratchpad_region_tx_save();
+        shared_memory_scratchpad_region_rx_save();
+        info_P(PSTR("Save scratchpad\n"));
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_SHMRESTORE]) == 0) {
+        shared_memory_scratchpad_region_tx_restore();
+        shared_memory_scratchpad_region_rx_restore();
+        info_P(PSTR("Restore scratchpad\n"));
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_LOADER]) == 0) {
+        boot_startup_rom(500);    
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_RECONNECT]) == 0) {
+        usb_connect();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_STATUS]) == 0) {
+            transaction_status();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_SYS]) == 0) {
+            system_status();
+    }else if (strcmp_P((char*)t, (PGM_P)cmdlist[CMD_HELP]) == 0) {
+        shell_help();
+    }    
+    prompt();
+}
+
+
+#endif

avr/usbload/shell.h

@@ -0,0 +1,26 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+
+#ifndef __SHELL_H__
+#define __SHELL_H__
+
+ void shell_run(void);
+
+#endif

avr/usbload/sram.c

@@ -34,7 +34,7 @@
 uint32_t addr_current = 0;
 uint32_t addr_stash = 0;
 
-void system_init(void)
+void sram_init(void)
 {
     /*-------------------------------------------------*/
     
@@ -114,14 +114,16 @@ void sreg_set(uint32_t addr)
     
 }
 
-inline void sram_bulk_addr_save()
+ void sram_bulk_addr_save()
 {
     addr_stash = addr_current;
+    debug_P(DEBUG_SRAM, PSTR("sram_bulk_addr_save: addr=0x%08lx\n\r"), addr_stash);
 }
 
 inline void sram_bulk_addr_restore()
 {
-    sreg_set(addr_stash);
+    debug_P(DEBUG_SRAM, PSTR("sram_bulk_addr_restore: addr=0x%08lx\n\r"), addr_stash);
+    sram_bulk_write_start(addr_stash);
 }
 
 
@@ -213,9 +215,16 @@ uint8_t sram_read(uint32_t addr)
 
 }
 
+uint16_t sram_read16_be(uint32_t addr){
+    uint8_t hi = sram_read(addr);
+    uint8_t lo = sram_read(addr+1);
+    return (hi << 8 | lo );
+}
+
 void sram_bulk_write_start(uint32_t addr)
 {
     debug_P(DEBUG_SRAM, PSTR("sram_bulk_write_start: addr=0x%08lx\n\r"), addr);
+    addr_current = addr;
 
     avr_data_out();
 
@@ -225,21 +234,21 @@ void sram_bulk_write_start(uint32_t addr)
 
     sreg_set(addr);
 
-    AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
-
 }
 
 inline void sram_bulk_write_next(void)
 {
-    AVR_WR_PORT |= (1 << AVR_WR_PIN);
-    counter_up();
     AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
+    addr_current++;
+    counter_up();
 }
 
 inline void sram_bulk_write( uint8_t data)
 {
+    AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
     AVR_DATA_PORT = data;
-    }
+    AVR_WR_PORT |= (1 << AVR_WR_PIN);
+}
 
 void sram_bulk_write_end(void)
 {
@@ -290,8 +299,11 @@ void sram_bulk_copy_from_buffer(uint32_t addr, uint8_t * src, uint32_t len)
         addr, src, len);
     sram_bulk_write_start(addr);
     for (i = addr; i < (addr + len); i++){
-        sram_bulk_write(*ptr++);
-        sram_bulk_write_next();
+        sram_bulk_write(*ptr);
+//hack
+        if ((i+1) < (addr + len))
+            sram_bulk_write_next();
+        ptr++;
     }
     sram_bulk_write_end();
 }
@@ -305,9 +317,8 @@ void sram_bulk_copy_into_buffer(uint32_t addr, uint8_t * dst, uint32_t len)
         addr, dst, len);
     sram_bulk_read_start(addr);
     for (i = addr; i < (addr + len); i++) {
-        *ptr = sram_bulk_read();
+        dst[i] = sram_bulk_read();
         sram_bulk_read_next();
-        ptr++;
     }
     sram_bulk_read_end();
 }

avr/usbload/sram.h

@@ -86,22 +86,22 @@
 #define AVR_ADDR_LATCH_DIR	    DDRC
 #define AVR_ADDR_LATCH_PIN	    PC6
 
-#define avr_addr_latch_hi()       (AVR_ADDR_LATCH_PORT |= (1 << AVR_ADDR_LATCH_PIN)))
-#define avr_addr_latch_lo()       (AVR_ADDR_LATCH_PORT &= ~(1 << AVR_ADDR_LATCH_PIN)))
+#define avr_addr_latch_hi()       (AVR_ADDR_LATCH_PORT |= (1 << AVR_ADDR_LATCH_PIN))
+#define avr_addr_latch_lo()       (AVR_ADDR_LATCH_PORT &= ~(1 << AVR_ADDR_LATCH_PIN))
 
 #define AVR_ADDR_SCK_PORT	    PORTC
 #define AVR_ADDR_SCK_DIR	    DDRC
 #define AVR_ADDR_SCK_PIN	    PC5
 
-#define avr_addr_sck_hi()       (AVR_ADDR_SCK_PORT |= (1 << AVR_ADDR_SCK_PIN)))
-#define avr_addr_sck_lo()       (AVR_ADDR_SCK_PORT &= ~(1 << AVR_ADDR_SCK_PIN)))
+#define avr_addr_sck_hi()       (AVR_ADDR_SCK_PORT |= (1 << AVR_ADDR_SCK_PIN))
+#define avr_addr_sck_lo()       (AVR_ADDR_SCK_PORT &= ~(1 << AVR_ADDR_SCK_PIN))
 
 #define AVR_ADDR_SER_PORT	    PORTC
 #define AVR_ADDR_SER_DIR	    DDRC
 #define AVR_ADDR_SER_PIN	    PC4
 
-#define avr_addr_ser_hi()       (AVR_ADDR_SER_PORT |= (1 << AVR_ADDR_SER_PIN)))
-#define avr_addr_ser_lo()       (AVR_ADDR_SER_PORT &= ~(1 << AVR_ADDR_SER_PIN)))
+#define avr_addr_ser_hi()       (AVR_ADDR_SER_PORT |= (1 << AVR_ADDR_SER_PIN))
+#define avr_addr_ser_lo()       (AVR_ADDR_SER_PORT &= ~(1 << AVR_ADDR_SER_PIN))
 
 #define AVR_ADDR_LOAD_PORT	    PORTC
 #define AVR_ADDR_LOAD_DIR	    DDRC
@@ -137,6 +137,8 @@
 #define led_off()	            ((LED_PORT &=~ (1 << LED_PIN)),\
                                 (LED_DIR |= (1 << LED_PIN)))
 
+#define led_pwm_on()	        (LED_DIR &=~ (1 << LED_PIN))
+#define led_pwm_off()	        (LED_DIR |= (1 << LED_PIN))
 
 /* ---------------------------- PORT D ---------------------------- */
 
@@ -151,7 +153,8 @@
                                 (AVR_CS_DIR |= (1 << AVR_CS_PIN)))
 
 #define snes_bus_active()	    ((AVR_SNES_SW_PORT |= (1 << AVR_SNES_SW_PIN)),\
-                                (AVR_CS_DIR &= ~(1 << AVR_CS_PIN)))
+                                (AVR_CS_DIR &= ~(1 << AVR_CS_PIN)),\
+                                (AVR_CS_PORT |= (1 << AVR_CS_PIN)))
 
 #define HI_LOROM_SW_PORT	    PORTD
 #define HI_LOROM_SW_DIR	        DDRD
@@ -193,7 +196,7 @@
 
 
 
-void system_init(void);
+void sram_init(void);
 void sreg_set(uint32_t addr);
 
 uint8_t sram_read(uint32_t addr);
@@ -203,6 +206,7 @@ void sram_bulk_read_start(uint32_t addr);
 inline void sram_bulk_read_next(void);
 inline void sram_bulk_read_end(void);
 uint8_t sram_bulk_read(void);
+uint16_t sram_read16_be(uint32_t addr);
 
 void sram_bulk_write_start(uint32_t addr);
 inline void sram_bulk_write_next(void);

avr/usbload/system.c

@@ -0,0 +1,186 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <avr/io.h>
+#include <util/delay.h>         /* for _delay_ms() */
+#include <avr/interrupt.h>      
+
+
+#include "config.h"
+#include "sram.h"
+#include "system.h"
+#include "uart.h"
+#include "debug.h"
+#include "info.h"
+#include "requests.h"
+#include "irq.h"
+
+system_t system;
+
+void system_init(void)
+{
+    snes_reset_hi();
+    snes_reset_off();
+    system.reset_line = RESET_OFF;
+
+    snes_irq_hi();
+    snes_irq_off();
+    system.irq_line = IRQ_OFF;
+
+
+    snes_wr_disable();
+    system.wr_line = WR_DISABLE;
+
+    avr_bus_active();
+    system.bus_mode = MODE_AVR;
+
+    snes_lorom();
+    system.rom_mode = LOROM;
+
+    system.snes_reset_count = 0;
+    system.avr_reset_count = 0;
+
+    system.reset_irq = RESET_IRQ_OFF;
+
+}   
+
+void system_send_snes_reset()
+{
+    info_P(PSTR("Reset SNES\n"));
+    cli();
+    snes_reset_on();
+    snes_reset_lo();
+    _delay_ms(2);
+    snes_reset_hi();
+    snes_reset_off();
+    sei();
+    system.snes_reset_count++;
+}
+
+void system_send_snes_irq()
+{
+    snes_irq_on();
+    snes_irq_lo();
+    _delay_us(20);
+    snes_irq_hi();
+    snes_irq_off();
+}
+
+void system_snes_irq_off()
+{    
+    snes_irq_off();
+    system.irq_line = IRQ_OFF;
+}
+
+void system_snes_irq_on()
+{    
+    snes_irq_on();
+    system.irq_line = IRQ_ON;
+}
+
+
+void system_set_bus_avr()
+{
+    avr_bus_active();
+    info_P(PSTR("Activate AVR bus\n"));
+    system.bus_mode = MODE_AVR;
+}
+
+void system_set_wr_disable(){
+    snes_wr_disable();
+    system.wr_line = WR_DISABLE;
+    info_P(PSTR("Disable SNES WR\n"));
+}
+
+void system_set_wr_enable(){
+    snes_wr_enable();
+    system.wr_line = WR_ENABLE;
+    info_P(PSTR("Enable SNES WR\n"));
+}
+
+void system_set_bus_snes()
+{
+    snes_bus_active();
+    system.bus_mode = MODE_SNES;
+    info_P(PSTR("Activate SNES bus\n"));
+}
+
+void system_set_rom_mode(usb_transaction_t *usb_trans)
+{
+    if (usb_trans->req_bank_size == 0x8000) {
+        snes_lorom();
+        system.rom_mode = LOROM;
+        info_P(PSTR("Set SNES lorom \n"));
+    } else {
+        snes_hirom();
+        system.rom_mode = HIROM;
+        info_P(PSTR("Set SNES hirom \n"));
+    }
+}
+
+void system_set_rom_lorom()
+{
+    snes_lorom();
+    system.rom_mode = LOROM;
+    info_P(PSTR("Set SNES lorom \n"));
+}
+
+
+void system_set_rom_hirom()
+{
+    snes_hirom();
+    system.rom_mode = HIROM;
+    info_P(PSTR("Set SNES hirom \n"));
+}
+
+char* system_status_helper(uint8_t val){
+   if (val)
+       return "ON";
+    else
+        return "OFF";
+}
+
+char* system_status_bus(uint8_t val){
+   if (val)
+       return "SNES";
+    else
+        return "AVR";
+}
+
+char* system_status_rom(uint8_t val){
+   if (val)
+       return "HIROM";
+    else
+        return "LOROM";
+}
+
+void system_status(){
+    info_P(PSTR("\nBus Mode       %s\n"),system_status_bus(system.bus_mode));
+    info_P(PSTR("Rom Mode       %s\n"),system_status_rom(system.rom_mode));
+    info_P(PSTR("Reset Line     %s\n"),system_status_helper(system.reset_line));
+    info_P(PSTR("IRQ Line       %s\n"),system_status_helper(system.irq_line));
+    info_P(PSTR("WR Line        %s\n"),system_status_helper(system.wr_line));
+    info_P(PSTR("Reset IRQ      %s\n"),system_status_helper(system.reset_irq));
+    info_P(PSTR("SNES Reset     0x%02x\n"),system.snes_reset_count);
+    info_P(PSTR("AVR Reset      0x%02x\n"),system.avr_reset_count);
+}   

avr/usbload/system.h

@@ -0,0 +1,57 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+
+
+
+#ifndef __SYSTEM_H__
+#define __SYSTEM_H__
+
+#include "requests.h"
+
+
+
+typedef struct system_t {
+    enum bus_mode_e   { MODE_AVR, MODE_SNES } bus_mode;
+    enum rom_mode_e   { LOROM, HIROM } rom_mode;
+    enum reset_line_e { RESET_OFF, RESET_ON } reset_line;
+    enum irq_line_e   { IRQ_ON, IRQ_OFF } irq_line;
+    enum wr_line_e    { WR_DISABLE, WR_ENABLE } wr_line;
+    enum reset_irq_e   { RESET_IRQ_OFF, RESET_IRQ_ON } reset_irq;
+
+    uint8_t snes_reset_count;
+    uint8_t avr_reset_count;
+} system_t;
+
+void system_init(void);
+void system_init(void);
+void system_send_snes_reset(void);
+void system_send_snes_irq(void);
+void system_set_bus_avr(void);
+void system_set_bus_snes(void);
+void system_set_rom_mode(usb_transaction_t *usb_trans);
+void system_set_rom_hirom(void);
+void system_set_rom_lorom(void);
+void system_snes_irq_off(void);
+void system_set_wr_disable(void);
+void system_set_wr_enable(void);
+
+void system_status();
+
+#endif

avr/usbload/testing.c

@@ -31,6 +31,7 @@
 #include "debug.h"
 #include "crc.h"
 #include "info.h"
+#include "dump.h"
 
 void test_read_write()
 {
@@ -92,6 +93,30 @@ void test_non_zero_memory(uint32_t bottom_addr, uint32_t top_addr)
 }
 
 
+void test_memory_pattern(uint32_t bottom_addr, uint32_t top_addr, uint32_t bank_size)
+{
+    uint32_t addr = 0;
+    uint8_t pattern = 0x55;
+    info_P(PSTR("test_memory_pattern: bottom_addr=0x%08lx top_addr=0x%08lx\n"), bottom_addr, top_addr);
+    sram_bulk_write_start(bottom_addr);
+    for (addr = bottom_addr; addr < top_addr; addr++) {
+        if (addr % bank_size == 0){
+            pattern++;
+            info_P(PSTR("test_memory_pattern: write addr=0x%08lx pattern=0x%08lx\n"), addr, pattern);
+        }
+        sram_bulk_write(pattern);
+    }
+    sram_bulk_write_end();
+
+
+    for (addr = bottom_addr; addr < top_addr; addr+=bank_size) {
+        info_P(PSTR("test_memory_pattern: dump bottom_addr=0x%08lx top_addr=0x%08lx\n"), addr, addr + bank_size);
+        dump_memory(addr, addr + bank_size );
+        info_P(PSTR("----------------------------------------------------------------\n"));
+    }
+
+    crc_check_bulk_memory((uint32_t)bottom_addr,top_addr, bank_size);
+}
 
 void test_crc()
 {

avr/usbload/uart.c

@@ -25,6 +25,8 @@
 #include "uart.h"
 #include "fifo.h"
 
+
+
 volatile struct {
     uint8_t tmr_int:1;
     uint8_t adc_int:1;
@@ -35,6 +37,9 @@ volatile struct {
 volatile char rxbuff;
 
 
+
+static int uart_stream(char c, FILE *stream);
+
 FILE uart_stdout = FDEV_SETUP_STREAM(uart_stream, NULL, _FDEV_SETUP_WRITE);
 
 void uart_init(void)
@@ -47,7 +52,7 @@ void uart_init(void)
 
 }
 
-
+/*
 ISR(USART0_RX_vect)
 {
     uint8_t c;
@@ -57,7 +62,7 @@ ISR(USART0_RX_vect)
         intflags.rx_int = 1;
     }
 }
-
+*/
 
 void uart_putc(uint8_t c)
 {

avr/usbload/uart.h

@@ -32,7 +32,6 @@ void uart_init(void);
 void uart_putc(const uint8_t);
 void uart_puts(const char *s);
 void uart_puts_P(PGM_P s);
-static int uart_stream(char c, FILE *stream);
 
 #endif
 

avr/usbload/usb_bulk.c

@@ -39,32 +39,24 @@
 #include "crc.h"
 #include "usb_bulk.h"
 
-extern uint8_t read_buffer[TRANSFER_BUFFER_SIZE];
-extern uint32_t req_addr;
-extern uint32_t req_size;
-extern uint8_t req_bank;
-extern uint32_t req_bank_size;
-extern uint8_t req_state;
-extern uint8_t rx_remaining; 
-extern uint8_t tx_remaining;
-extern  uint8_t tx_buffer[32];
-extern uint16_t crc;
+
+extern usb_transaction_t usb_trans;
 
 uint8_t usbFunctionWrite(uint8_t * data, uint8_t len)
 {
     uint8_t *ptr;
     uint8_t  i;
     
-    if (len > rx_remaining) {
+    if (len > usb_trans.rx_remaining) {
         info_P(PSTR("ERROR:usbFunctionWrite more data than expected remain: %i len: %i\n"),
-               rx_remaining, len);
-        len = rx_remaining;
+                usb_trans.rx_remaining, len);
+        len =  usb_trans.rx_remaining;
     }
-    if (req_state == REQ_STATUS_BULK_UPLOAD) {
+    if (usb_trans.req_state == REQ_STATUS_BULK_UPLOAD) {
 
-        rx_remaining -= len;
+        usb_trans.rx_remaining -= len;
         debug_P(DEBUG_USB_TRANS, PSTR("usbFunctionWrite REQ_STATUS_BULK_UPLOAD addr: 0x%08lx len: %i rx_remaining=%i\n"),
-               req_addr, len, rx_remaining);
+                usb_trans.req_addr, len,  usb_trans.rx_remaining);
         ptr = data;
         i = len;
         while(i--){
@@ -78,13 +70,13 @@ uint8_t usbFunctionWrite(uint8_t * data, uint8_t len)
 uint8_t usbFunctionRead(uint8_t * data, uint8_t len)
 {
     uint8_t i;
-    if (len > tx_remaining)
-        len = tx_remaining;
-    tx_remaining -= len;
-    debug_P(DEBUG_USB_TRANS, PSTR("usbFunctionRead len=%i tx_remaining=%i \n"), len, tx_remaining);
+    if (len >  usb_trans.tx_remaining)
+        len =  usb_trans.tx_remaining;
+     usb_trans.tx_remaining -= len;
+    debug_P(DEBUG_USB_TRANS, PSTR("usbFunctionRead len=%i tx_remaining=%i \n"), len, usb_trans.tx_remaining);
 
     for (i = 0; i < len; i++) {
-        *data = tx_buffer[len];
+        *data =  usb_trans.tx_buffer[len];
         data++;
     }
     return len;

avr/usbload/usbconfig.h

@@ -127,7 +127,7 @@ section at the end of this file).
  * (e.g. HID), but never want to send any data. This option saves a couple
  * of bytes in flash memory and the transmit buffers in RAM.
  */
-#define USB_CFG_INTR_POLL_INTERVAL      200
+#define USB_CFG_INTR_POLL_INTERVAL      20
 /* If you compile a version with endpoint 1 (interrupt-in), this is the poll
  * interval. The value is in milliseconds and must not be less than 10 ms for
  * low speed devices.

avr/usbload/util.c

@@ -0,0 +1,132 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+ 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+uint8_t *util_strupper(uint8_t *s)
+{
+	uint8_t *p;
+	for (p = s; *p != '\0'; p++)
+		if (*p >= 'a' && *p <= 'z')
+			*p += 'A' - 'a';
+	return s;
+}
+
+uint8_t *util_strlower(uint8_t *s)
+{
+	uint8_t *p;
+	for (p = s; *p != '\0'; p++)
+		if (*p >= 'A' && *p <= 'Z')
+			*p += 'a' - 'A';
+	return s;
+}
+
+void util_chomp(uint8_t *s)
+{
+	uint16_t len;
+
+	len = strlen((char*)s);
+	if (len >= 2 && s[len - 1] == '\n' && s[len - 2] == '\r')
+		s[len - 2] = '\0';
+	else if (len >= 1 && (s[len - 1] == '\n' || s[len - 1] == '\r'))
+		s[len - 1] = '\0';
+}
+
+void util_trim(uint8_t *s)
+{
+	uint8_t *p = s;
+	uint8_t *q;
+	/* skip leading whitespace */
+	while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
+		p++;
+	/* now p points at the first non-whitespace uint8_tacter */
+
+	if (*p == '\0') {
+		/* only whitespace */
+		*s = '\0';
+		return;
+	}
+
+	q = s + strlen((char*)s);
+	/* skip trailing whitespace */
+	/* we have found p < q such that *p is non-whitespace,
+	   so this loop terminates with q >= p */
+	do
+		q--;
+	while (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n');
+
+	/* now q points at the last non-whitespace uint8_tacter */
+	/* cut off trailing whitespace */
+	*++q = '\0';
+
+	/* move to string */
+	memmove(s, p, q + 1 - p);
+}
+
+uint32_t util_sscandec(const uint8_t *s)
+{
+	uint32_t result;
+	if (*s == '\0')
+		return -1;
+	result = 0;
+	for (;;) {
+		if (*s >= '0' && *s <= '9')
+			result = 10 * result + *s - '0';
+		else if (*s == '\0')
+			return result;
+		else
+			return -1;
+		s++;
+	}
+}
+
+uint32_t util_sscanhex(const uint8_t *s)
+{
+	int32_t result;
+	if (*s == '\0')
+		return -1;
+	result = 0;
+	for (;;) {
+		if (*s >= '0' && *s <= '9')
+			result = 16 * result + *s - '0';
+		else if (*s >= 'A' && *s <= 'F')
+			result = 16 * result + *s - 'A' + 10;
+		else if (*s >= 'a' && *s <= 'f')
+			result = 16 * result + *s - 'a' + 10;
+		else if (*s == '\0')
+			return result;
+		else
+			return -1;
+		s++;
+	}
+}
+
+uint8_t util_sscanbool(const uint8_t *s)
+{
+	if (*s == '0' && s[1] == '\0')
+		return 0;
+	if (*s == '1' && s[1] == '\0')
+		return 1;
+	return -1;
+}
+
+

avr/usbload/util.h

@@ -0,0 +1,32 @@
+/*
+ * =====================================================================================
+ *
+ * ________        .__        __    ________               ____  ________
+ * \_____  \  __ __|__| ____ |  | __\______ \   _______  _/_   |/  _____/
+ *  /  / \  \|  |  \  |/ ___\|  |/ / |    |  \_/ __ \  \/ /|   /   __  \
+ * /   \_/.  \  |  /  \  \___|    <  |    `   \  ___/\   / |   \  |__\  \
+ * \_____\ \_/____/|__|\___  >__|_ \/_______  /\___  >\_/  |___|\_____  /
+ *        \__>             \/     \/        \/     \/                 \/
+ *
+ *                                  www.optixx.org
+ *
+ *
+ *        Version:  1.0
+ *        Created:  07/21/2009 03:32:16 PM
+ *         Author:  david@optixx.org
+ *
+ * =====================================================================================
+ */
+
+#ifndef __UTIL_H__
+#define __UTIL_H__
+
+ uint8_t *util_strupper(uint8_t *s);
+uint8_t *util_strlower(uint8_t *s);
+void util_chomp(uint8_t *s);
+void util_trim(uint8_t *s);
+uint32_t util_sscandec(const uint8_t *s);
+uint32_t util_sscanhex(const uint8_t *s);
+uint8_t util_sscanbool(const uint8_t *s);
+
+#endif

done.txt

@@ -0,0 +1,10 @@
+x 2009-10-13 Send PCB to seeed
+x 2009-10-13 RS232 cable add programm header and sio lines
+x 2009-10-13 Assemble No. 006 & No. 007
+x 2009-10-13 Flash all cartridge with latest firmware and bootloader
+x 2009-10-13 Bootloader lockbits
+x 2009-10-13 Rework No. 002
+x 2009-10-13 Package for Quickdev16
+x 2009-10-13 Add struct for usb and communcations flags
+x 2009-10-13 Mail snega2usb about OEM
+x 2009-10-13 Email to seeed about the retour package