o add io test

poc/avr_iotest/Makefile

@@ -0,0 +1,438 @@
+# Hey Emacs, this is a -*- makefile -*-
+#
+# WinAVR makefile written by Eric B. Weddington, Jörg Wunsch, et al.
+# Released to the Public Domain
+# Please read the make user manual!
+#
+# Additional material for this makefile was submitted by:
+#  Tim Henigan
+#  Peter Fleury
+#  Reiner Patommel
+#  Sander Pool
+#  Frederik Rouleau
+#  Markus Pfaff
+#
+# On command line:
+#
+# make all = Make software.
+#
+# make clean = Clean out built project files.
+#
+# make coff = Convert ELF to AVR COFF (for use with AVR Studio 3.x or VMLAB).
+#
+# make extcoff = Convert ELF to AVR Extended COFF (for use with AVR Studio
+#                4.07 or greater).
+#
+# make program = Download the hex file to the device, using avrdude.  Please
+#                customize the avrdude settings below first!
+#
+# make filename.s = Just compile filename.c into the assembler code only
+#
+# To rebuild project do "make clean" then "make all".
+#
+
+# mth 2004/09 
+# Differences from WinAVR 20040720 sample:
+# - DEPFLAGS according to Eric Weddingtion's fix (avrfreaks/gcc-forum)
+# - F_OSC Define in CFLAGS and AFLAGS
+
+
+# MCU name
+MCU = atmega16
+
+# Main Oscillator Frequency
+# This is only used to define F_OSC in all assembler and c-sources.
+F_OSC = 16000000
+
+# Output format. (can be srec, ihex, binary)
+FORMAT = ihex
+
+# Target file name (without extension).
+TARGET = main
+
+
+# List C source files here. (C dependencies are automatically generated.)
+SRC = $(TARGET).c uart.c 
+
+
+# List Assembler source files here.
+# Make them always end in a capital .S.  Files ending in a lowercase .s
+# will not be considered source files but generated files (assembler
+# output from the compiler), and will be deleted upon "make clean"!
+# Even though the DOS/Win* filesystem matches both .s and .S the same,
+# it will preserve the spelling of the filenames, and gcc itself does
+# care about how the name is spelled on its command-line.
+ASRC = 
+
+
+
+# Optimization level, can be [0, 1, 2, 3, s]. 
+# 0 = turn off optimization. s = optimize for size.
+# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
+OPT = s
+
+# Debugging format.
+# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
+# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
+#DEBUG = stabs
+#DEBUG = dwarf-2
+
+# List any extra directories to look for include files here.
+#     Each directory must be seperated by a space.
+EXTRAINCDIRS = 
+
+
+# Compiler flag to set the C Standard level.
+# c89   - "ANSI" C
+# gnu89 - c89 plus GCC extensions
+# c99   - ISO C99 standard (not yet fully implemented)
+# gnu99 - c99 plus GCC extensions
+CSTANDARD = -std=gnu99
+
+# Place -D or -U options here
+CDEFS =
+
+# Place -I options here
+CINCS =
+
+
+# Compiler flags.
+#  -g*:          generate debugging information
+#  -O*:          optimization level
+#  -f...:        tuning, see GCC manual and avr-libc documentation
+#  -Wall...:     warning level
+#  -Wa,...:      tell GCC to pass this to the assembler.
+#    -adhlns...: create assembler listing
+CFLAGS = -g$(DEBUG)
+CFLAGS += $(CDEFS) $(CINCS)
+CFLAGS += -O$(OPT)
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
+CFLAGS += -Wall -Wstrict-prototypes
+CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
+CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
+CFLAGS += $(CSTANDARD)
+CFLAGS += -DF_OSC=$(F_OSC)
+CFLAGS +=  -DF_CPU=16000000UL   
+#CFLAGS += -DF_CPU=3686400UL
+
+
+# Assembler flags.
+#  -Wa,...:   tell GCC to pass this to the assembler.
+#  -ahlms:    create listing
+#  -gstabs:   have the assembler create line number information; note that
+#             for use in COFF files, additional information about filenames
+#             and function names needs to be present in the assembler source
+#             files -- see avr-libc docs [FIXME: not yet described there]
+ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 
+ASFLAGS += -DF_OSC=$(F_OSC)
+
+
+#Additional libraries.
+
+# Minimalistic printf version
+PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
+
+# Floating point printf version (requires MATH_LIB = -lm below)
+PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
+
+PRINTF_LIB = 
+
+# Minimalistic scanf version
+SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
+
+# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
+SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
+
+SCANF_LIB = 
+
+MATH_LIB = -lm
+
+# External memory options
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# used for variables (.data/.bss) and heap (malloc()).
+#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# only used for heap (malloc()).
+#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff
+
+EXTMEMOPTS =
+
+# Linker flags.
+#  -Wl,...:     tell GCC to pass this to linker.
+#    -Map:      create map file
+#    --cref:    add cross reference to  map file
+LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS += $(EXTMEMOPTS)
+LDFLAGS += $(PRINTF_LIB_MIN) $(SCANF_LIB) $(MATH_LIB)
+
+
+
+
+# Programming support using avrdude. Settings and variables.
+
+# Programming hardware: alf avr910 avrisp bascom bsd 
+# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
+#
+# Type: avrdude -c ?
+# to get a full listing.
+#
+AVRDUDE_PROGRAMMER = stk500v2
+
+# com1 = serial port. Use lpt1 to connect to parallel port.
+
+AVRDUDE_PORT = /dev/tty.PL2303-00002126
+
+AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
+
+# Uncomment the following if you want avrdude's erase cycle counter.
+# Note that this counter needs to be initialized first using -Yn,
+# see avrdude manual.
+#AVRDUDE_ERASE_COUNTER = -y
+
+# Uncomment the following if you do /not/ wish a verification to be
+# performed after programming the device.
+AVRDUDE_NO_VERIFY = -V
+
+# Increase verbosity level.  Please use this when submitting bug
+# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude> 
+# to submit bug reports.
+AVRDUDE_VERBOSE = -v -v
+
+AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
+AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
+AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
+
+#flash_fuse:
+#	avrdude -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) -U lfuse:w:0xfe:m
+#	avrdude -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) -U hfuse:w:0xd9:m
+
+
+# ---------------------------------------------------------------------------
+
+# Define directories, if needed.
+DIRAVR = c:/winavr
+DIRAVRBIN = $(DIRAVR)/bin
+DIRAVRUTILS = $(DIRAVR)/utils/bin
+DIRINC = .
+DIRLIB = $(DIRAVR)/avr/lib
+
+
+# Define programs and commands.
+SHELL = sh
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE = avr-size
+NM = avr-nm
+AVRDUDE = avrdude
+REMOVE = rm -f
+COPY = cp
+
+
+
+
+# Define Messages
+# English
+MSG_ERRORS_NONE = Errors: none
+MSG_BEGIN = -------- begin --------
+MSG_END = --------  end  --------
+MSG_SIZE_BEFORE = Size before: 
+MSG_SIZE_AFTER = Size after:
+MSG_COFF = Converting to AVR COFF:
+MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
+MSG_FLASH = Creating load file for Flash:
+MSG_EEPROM = Creating load file for EEPROM:
+MSG_EXTENDED_LISTING = Creating Extended Listing:
+MSG_SYMBOL_TABLE = Creating Symbol Table:
+MSG_LINKING = Linking:
+MSG_COMPILING = Compiling:
+MSG_ASSEMBLING = Assembling:
+MSG_CLEANING = Cleaning project:
+
+
+
+
+# Define all object files.
+OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) 
+
+# Define all listing files.
+LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
+
+
+# Compiler flags to generate dependency files.
+### GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d
+GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d
+
+# Combine all necessary flags and optional flags.
+# Add target processor to flags.
+ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
+ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
+
+
+
+
+
+# Default target.
+all: begin gccversion sizebefore build sizeafter finished end
+
+build: elf hex eep lss sym
+
+elf: $(TARGET).elf
+hex: $(TARGET).hex
+eep: $(TARGET).eep
+lss: $(TARGET).lss 
+sym: $(TARGET).sym
+
+
+
+# Eye candy.
+# AVR Studio 3.x does not check make's exit code but relies on
+# the following magic strings to be generated by the compile job.
+begin:
+	@echo
+	@echo $(MSG_BEGIN)
+
+finished:
+	@echo $(MSG_ERRORS_NONE)
+
+end:
+	@echo $(MSG_END)
+	@echo
+
+
+# Display size of file.
+HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
+ELFSIZE = $(SIZE) -A $(TARGET).elf
+sizebefore:
+	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi
+
+sizeafter:
+	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
+
+
+
+# Display compiler version information.
+gccversion : 
+	@$(CC) --version
+
+
+
+# Program the device.  
+
+
+flash: $(TARGET).hex $(TARGET).eep
+	sudo $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
+
+# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
+COFFCONVERT=$(OBJCOPY) --debugging \
+--change-section-address .data-0x800000 \
+--change-section-address .bss-0x800000 \
+--change-section-address .noinit-0x800000 \
+--change-section-address .eeprom-0x810000 
+
+
+coff: $(TARGET).elf
+	@echo
+	@echo $(MSG_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
+
+
+extcoff: $(TARGET).elf
+	@echo
+	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
+
+
+
+# Create final output files (.hex, .eep) from ELF output file.
+%.hex: %.elf
+	@echo
+	@echo $(MSG_FLASH) $@
+	$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+%.eep: %.elf
+	@echo
+	@echo $(MSG_EEPROM) $@
+	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+	--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+# Create extended listing file from ELF output file.
+%.lss: %.elf
+	@echo
+	@echo $(MSG_EXTENDED_LISTING) $@
+	$(OBJDUMP) -h -S $< > $@
+
+# Create a symbol table from ELF output file.
+%.sym: %.elf
+	@echo
+	@echo $(MSG_SYMBOL_TABLE) $@
+	$(NM) -n $< > $@
+
+
+
+# Link: create ELF output file from object files.
+.SECONDARY : $(TARGET).elf
+.PRECIOUS : $(OBJ)
+%.elf: $(OBJ)
+	@echo
+	@echo $(MSG_LINKING) $@
+	$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
+
+
+# Compile: create object files from C source files.
+%.o : %.c
+	@echo
+	@echo $(MSG_COMPILING) $<
+	$(CC) -c $(ALL_CFLAGS) $< -o $@ 
+
+
+# Compile: create assembler files from C source files.
+%.s : %.c
+	$(CC) -S $(ALL_CFLAGS) $< -o $@
+
+
+# Assemble: create object files from assembler source files.
+%.o : %.S
+	@echo
+	@echo $(MSG_ASSEMBLING) $<
+	$(CC) -c $(ALL_ASFLAGS) $< -o $@
+
+
+
+# Target: clean project.
+clean: begin clean_list finished end
+
+clean_list :
+	@echo
+	@echo $(MSG_CLEANING)
+	$(REMOVE) $(TARGET).hex
+	$(REMOVE) $(TARGET).eep
+	$(REMOVE) $(TARGET).obj
+	$(REMOVE) $(TARGET).cof
+	$(REMOVE) $(TARGET).elf
+	$(REMOVE) $(TARGET).map
+	$(REMOVE) $(TARGET).obj
+	$(REMOVE) $(TARGET).a90
+	$(REMOVE) $(TARGET).sym
+	$(REMOVE) $(TARGET).lnk
+	$(REMOVE) $(TARGET).lss
+	$(REMOVE) $(OBJ)
+	$(REMOVE) $(LST)
+	$(REMOVE) $(SRC:.c=.s)
+	$(REMOVE) $(SRC:.c=.d)
+	$(REMOVE) .dep/*
+
+
+
+# Include the dependency files.
+-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
+
+
+# Listing of phony targets.
+.PHONY : all begin finish end sizebefore sizeafter gccversion \
+build elf hex eep lss sym coff extcoff \
+clean clean_list program
+

poc/avr_iotest/checksize

@@ -0,0 +1,35 @@
+#!/bin/sh
+# Name: checksize
+# Project: PowerSwitch/AVR-USB
+# Author: Christian Starkjohann
+# Creation Date: 2004-12-29
+# Tabsize: 4
+# Copyright: (c) 2005 OBJECTIVE DEVELOPMENT Software GmbH.
+# Revision: $Id: checksize 83 2006-01-05 22:20:53Z cs $
+
+error=0
+codelimit=2048  # default value
+datalimit=96    # default value; leave 32 bytes for stack
+
+if [ $# -gt 1 ]; then
+	codelimit="$2"
+fi
+if [ $# -gt 2 ]; then
+	datalimit="$3"
+fi
+
+set -- `avr-size -d "$1" | awk '/[0-9]/ {print $1 + $2, $2 + $3, $2}'`
+if [ $1 -gt $codelimit ]; then
+	echo "*** code size $1 exceeds limit of $codelimit"
+	error=1
+else
+	echo "ROM: $1 bytes (data=$3)"
+fi
+if [ $2 -gt $datalimit ]; then
+	echo "*** data size $2 exceeds limit of $datalimit"
+	error=1
+else
+	echo "RAM: $2 bytes"
+fi
+
+exit $error

poc/avr_iotest/fifo.c

@@ -0,0 +1,28 @@
+#include "fifo.h"
+
+void fifo_init(fifo_t * f, uint8_t * buffer, const uint8_t size)
+{
+    f->count = 0;
+    f->pread = f->pwrite = buffer;
+    f->read2end = f->write2end = f->size = size;
+}
+
+uint8_t fifo_put(fifo_t * f, const uint8_t data)
+{
+    return _inline_fifo_put(f, data);
+}
+
+uint8_t fifo_get_wait(fifo_t * f)
+{
+    while (!f->count);
+
+    return _inline_fifo_get(f);
+}
+
+int fifo_get_nowait(fifo_t * f)
+{
+    if (!f->count)
+        return -1;
+
+    return (int) _inline_fifo_get(f);
+}

poc/avr_iotest/fifo.h

@@ -0,0 +1,69 @@
+#ifndef _FIFO_H_
+#define _FIFO_H_
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+typedef struct {
+    uint8_t volatile count;     // # Zeichen im Puffer
+    uint8_t size;               // Puffer-Größe
+    uint8_t *pread;             // Lesezeiger
+    uint8_t *pwrite;            // Schreibzeiger
+    uint8_t read2end, write2end;        // # Zeichen bis zum Überlauf Lese-/Schreibzeiger
+} fifo_t;
+
+extern void fifo_init(fifo_t *, uint8_t * buf, const uint8_t size);
+extern uint8_t fifo_put(fifo_t *, const uint8_t data);
+extern uint8_t fifo_get_wait(fifo_t *);
+extern int fifo_get_nowait(fifo_t *);
+
+static inline uint8_t _inline_fifo_put(fifo_t * f, const uint8_t data)
+{
+    if (f->count >= f->size)
+        return 0;
+
+    uint8_t *pwrite = f->pwrite;
+
+    *(pwrite++) = data;
+
+    uint8_t write2end = f->write2end;
+
+    if (--write2end == 0) {
+        write2end = f->size;
+        pwrite -= write2end;
+    }
+
+    f->write2end = write2end;
+    f->pwrite = pwrite;
+
+    uint8_t sreg = SREG;
+    cli();
+    f->count++;
+    SREG = sreg;
+
+    return 1;
+}
+
+static inline uint8_t _inline_fifo_get(fifo_t * f)
+{
+    uint8_t *pread = f->pread;
+    uint8_t data = *(pread++);
+    uint8_t read2end = f->read2end;
+
+    if (--read2end == 0) {
+        read2end = f->size;
+        pread -= read2end;
+    }
+
+    f->pread = pread;
+    f->read2end = read2end;
+
+    uint8_t sreg = SREG;
+    cli();
+    f->count--;
+    SREG = sreg;
+
+    return data;
+}
+
+#endif                          /* _FIFO_H_ */

poc/avr_iotest/main.c

@@ -0,0 +1,35 @@
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <stdlib.h>
+
+#include "uart.h"
+extern FILE uart_stdout;
+
+int main(void)
+{
+
+    uart_init();
+    stdout = &uart_stdout;
+    printf("Init done\n");
+	
+    DDRD |= (1 << PD7);
+	
+	while(1){
+	    
+	    /*
+	    PORTD |= (1 << PD7);
+	    PORTD &= ~(1 << PD7);
+	    */
+	    PORTD ^= (1 << PD7);
+	    
+	}
+	
+	return 0 ;
+	
+}
+
+
+
+
+

poc/avr_iotest/uart.c

@@ -0,0 +1,79 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+#include <stdio.h>
+#include "uart.h"
+#include "fifo.h"
+
+volatile struct
+{
+    uint8_t tmr_int: 1;
+    uint8_t adc_int: 1;
+    uint8_t rx_int: 1;
+}
+intflags;
+
+/*
+ *  * Last character read from the UART.
+ *   
+ */
+volatile char rxbuff;
+
+
+FILE uart_stdout = FDEV_SETUP_STREAM(uart_stream, NULL, _FDEV_SETUP_WRITE);
+
+void uart_init(void)
+{
+    UCSRA = _BV(U2X);     /* improves baud rate error @ F_CPU = 1 MHz */
+    UCSRB = _BV(TXEN)|_BV(RXEN)|_BV(RXCIE); /* tx/rx enable, rx complete intr */
+    UBRRL = (F_CPU / (8 * 115200UL)) - 1;  /* 9600 Bd */
+
+}
+
+
+ISR(USART_RXC_vect)
+{
+    uint8_t c;
+    c = UDR;
+    if (bit_is_clear(UCSRA, FE)){
+        rxbuff = c;
+        intflags.rx_int = 1;
+    }
+}
+
+
+void  uart_putc(uint8_t c)
+{
+    loop_until_bit_is_set(UCSRA, UDRE);
+    UDR = c;
+}
+
+
+void uart_puts(const char *s)
+{
+    do {
+        uart_putc(*s);
+    }
+    while (*s++);
+}
+
+void uart_puts_P(PGM_P s)
+{
+    while (1) {
+        unsigned char c = pgm_read_byte(s);
+        s++;
+        if ('\0' == c)
+            break;
+        uart_putc(c);
+    }
+}
+
+static int uart_stream(char c, FILE *stream)
+{
+    if (c == '\n')
+        uart_putc('\r');
+    loop_until_bit_is_set(UCSRA, UDRE);
+    UDR = c;
+    return 0;
+}
+

poc/avr_iotest/uart.h

@@ -0,0 +1,18 @@
+#ifndef _UART_H_
+#define _UART_H_
+
+#define CR "\r\n"
+
+
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <stdio.h>
+
+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                          /* _UART_H_ */

poc/avr_sdcard/Makefile

@@ -182,7 +182,7 @@ AVRDUDE_PROGRAMMER = stk500v2
 
 # com1 = serial port. Use lpt1 to connect to parallel port.
 
-AVRDUDE_PORT =/dev/tty.PL2303-00001124
+AVRDUDE_PORT = /dev/tty.PL2303-00002126
 
 AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
 

poc/avr_sdcard/main.c

@@ -58,14 +58,15 @@ extern FILE uart_stdout;
 //#define FILENAME	"vram2.smc"  //ok
 //#define FILENAME	"super02.smc" //ok
 //#define FILENAME	"super01.smc"//ok
-//#define FILENAME	"crc.smc"    //ok
+#define FILENAME	"crc.smc"    //ok
 //#define FILENAME	"banks.smc"  //ok
 //#define FILENAME	"hungry.smc" //ok
 //#define FILENAME	"arkanoid.smc"//ok  
 //#define FILENAME	"eric.smc"  
-#define FILENAME	"turrican.smc"  
+//#define FILENAME	"super01.smc"  
 
-#define ROMSIZE      4
+#define ROMSIZE      2              // 4 == 4mbit == 512kb
+                                    // 2 == 2mbit == 256kb
 #define DUMPNAME	"dump256.smc"
 #define BUFFER_SIZE 512
 #define BLOCKS 		(ROMSIZE << 8)
@@ -213,20 +214,29 @@ void sram_write(uint32_t addr, uint8_t data)
 {
 	RAM_DIR = 0xff;
 
+    /* deactive RD and WR on ram  */
 	CTRL_PORT |= (1<<R_RD);   
 	CTRL_PORT |= (1<<R_WR);
 
+    /* setup  address */
 	spi_master_transmit((uint8_t)(addr>>16));
 	spi_master_transmit((uint8_t)(addr>>8));
 	spi_master_transmit((uint8_t)(addr>>0));
 
+	/* passthru address in sreg */
 	LATCH_PORT |= (1<<S_LATCH);
 	LATCH_PORT &= ~(1<<S_LATCH);
 
-
+    /* write enable */ 
 	CTRL_PORT &= ~(1<<R_WR);
 
+    /* busdriver toggle */
+
+
+    /* write data */ 
 	RAM_PORT = data;
+	
+    /* disable write */ 
 	CTRL_PORT |= (1<<R_WR);
 
 	RAM_DIR = 0x00;

poc/avr_usbload/Makefile

@@ -11,8 +11,8 @@ DEVICE  = atmega16
 F_CPU   = 16000000	# in Hz
 FUSE_L  = # see below for fuse values for particular devices
 FUSE_H  = 
-AVRDUDE = avrdude -c stk500v2 -p $(DEVICE) -P /dev/tty.PL2303-00002006 
+#AVRDUDE = avrdude -c stk500v2 -p $(DEVICE) -P /dev/tty.PL2303-00002006 
-#AVRDUDE = avrdude -c stk500v2 -p $(DEVICE) -P /dev/tty.PL2303-00001424
+AVRDUDE = sudo avrdude -c stk500v2 -p $(DEVICE) -P  /dev/tty.PL2303-00002126
 
 CFLAGS  = -Iusbdrv -I. -DDEBUG_LEVEL=0 
 #-std=gnu99 

poc/avr_usbload/commandline/snesuploader.c

@@ -178,11 +178,16 @@ int main(int argc, char **argv)
             for (step = 0; step < READ_BUFFER_SIZE; step += SEND_BUFFER_SIZE) {
                 addr_lo = addr & 0xffff;
                 addr_hi = (addr >> 16) & 0xff;
-                usb_control_msg(handle,
+                cnt = usb_control_msg(handle,
                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
                                 USB_ENDPOINT_OUT, USB_UPLOAD_ADDR, addr_hi,
                                 addr_lo, (char *) read_buffer + step,
                                 SEND_BUFFER_SIZE, 5000);
+
+                if (cnt < 0) {
+                    fprintf(stderr, "USB error: %s\n", usb_strerror());
+                    exit(-1);
+                } 
 #if 0
                 dump_packet(addr, SEND_BUFFER_SIZE, read_buffer + step);
 #endif

poc/avr_usbload/main.c

@@ -179,7 +179,7 @@ uint8_t usbFunctionRead(uint8_t * data, uint8_t len)
 int main(void)
 {
     uint8_t i;
-    wdt_enable(WDTO_1S);
+    //wdt_enable(WDTO_1S);
     uart_init();
     stdout = &uart_stdout;
     sram_init();

poc/avr_usbload/uart.c

@@ -27,6 +27,7 @@ void uart_init(void)
                                                  * intr */
     UBRRL = (F_CPU / (8 * 115200UL)) - 1;       /* 9600 Bd */
 
+
 }
 
 

snes/fatfstest/Makefile

@@ -24,7 +24,10 @@ LD=$(WINE) $(SDK)/bin/WDCLN.exe
 # Project
 
 INC=$(SDK)/include
-LIBS=$(SDK)/lib/cc
+LIBS=-L$(SDK)/lib/cc 
+#-L$(SDK)/lib/c134
+
+
 OBJS=StartupSnes.obj main.obj pad.obj PPU.obj debug.obj ressource.obj diskio.obj ff.obj
 APP=fatfs.smc
 GFX=debugfont
@@ -62,7 +65,7 @@ $(APP): $(OBJS)
                 -Avectors=FFE4,7FE4 \
                 -Aregistration_data=FFB0,7FB0 \
                 -Aressource=18000,8000 \
-                -N $(OBJS) -L$(LIBS) -O $@
+                -N $(OBJS) $(LIBS) -O $@
 		ucon64 -snes -chk $(APP)
 
 clean:

snes/fatfstest/debug.c

@@ -1,20 +1,33 @@
 #include <string.h>
+#include <stdarg.h>
+#include <fcntl.h>
+
 #include "data.h"
 #include "pad.h"
 #include "PPU.h"
 #include "ressource.h"
 
 word debugMap[0x400];
-
+static char debug_buffer[255];
+char hex_chars[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
 
 void debug_init(void) {
 	word i;
 	for(i=0; i<0x400; i++) {
 		debugMap[i] = 0x00;
 	}
+    memset(debug_buffer,0,255);
+}
+
+void debug_enable(void){
+	VRAMLoad((word) debugFont_pic, 0x5000, 2048);
+	CGRAMLoad((word) debugFont_pal, (byte) 0x00, (word) 16);
+	VRAMLoad((word) debugMap, 0x4000, 0x0800);
+	setTileMapLocation(0x4000, (byte) 0x00, (byte) 0);
+	setCharacterLocation(0x5000, (byte) 0);
+	*(byte*) 0x2100 = 0x0f; // enable background
 }
 
-char hex_chars[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
 
 void int2hex(unsigned long number, char *buf,word size)
 {
@@ -30,6 +43,8 @@ void int2hex(unsigned long number, char *buf,word size)
 
 }
 
+
+
 void print_screen(char *buffer,word y){
     char i;
     char l;
@@ -43,16 +58,55 @@ void print_screen(char *buffer,word y){
 	}
 }
 
+
+
 void print_console(char *buffer){
 	while(*buffer)
 	    *(byte*) 0x3000=*buffer++;
 }
 
-void debug_enable(void){
+
-	VRAMLoad((word) debugFont_pic, 0x5000, 2048);
+void printfc(char *fmt, ...){
-	CGRAMLoad((word) debugFont_pal, (byte) 0x00, (word) 16);
+    va_list arg;
-	VRAMLoad((word) debugMap, 0x4000, 0x0800);
+    va_start(arg,fmt);
-	setTileMapLocation(0x4000, (byte) 0x00, (byte) 0);
+    vsprintf(debug_buffer,fmt,arg); 
-	setCharacterLocation(0x5000, (byte) 0);
+    print_console(debug_buffer);
-	*(byte*) 0x2100 = 0x0f; // enable background
+}
+
+
+/* keep the linker happy */
+int open(const char * _name, int _mode){
+    print_console("open called\n");
+    return -1;
+}
+
+int close(int fd){
+    print_console("close called\n");
+    return -1;
+    
+} 
+
+size_t read(int fd, void * buff, size_t len){
+    print_console("read called\n");
+    return 0;
+} 
+
+size_t write(int fd, void * buffer, size_t len){
+    print_console("write called\n");
+    return 0;
+}
+
+long lseek(int fd, long off, int count){
+    print_console("lseek called\n");
+    return 0;
+} 
+
+int unlink(const char * name){
+    print_console("unlink called\n");
+    return -1;
+}
+
+int isatty(){
+    print_console("isatty called\n");
+    return 1;
 }

snes/fatfstest/diskio.c

@@ -3,8 +3,9 @@
 #include "diskio.h"
 #include "config.h"
 #include "data.h"
+#include "debug.h"
 
-static 
+volatile static 
 DSTATUS Stat = STA_NOINIT;  /* Disk status */
 
 
@@ -38,6 +39,7 @@ BYTE  *image_addr;
 DSTATUS disk_initialize (BYTE drv) {
     
     byte retval;
+    print_console("disk_initialize\n");
     if (drv) return STA_NOINIT;             /* Supports only single drive */
 
 
@@ -46,7 +48,8 @@ DSTATUS disk_initialize (BYTE drv) {
     *(byte*) MMIO_CMD = CMD_INIT;    
     while(*(byte*) MMIO_RETVAL == STA_VOID);
     retval = *(byte*) MMIO_RETVAL;
-    Stat &= ~retval;                    /* When device goes ready, clear STA_NOINIT */
+    Stat &= ~STA_NOINIT;                    /* When device goes ready, clear STA_NOINIT */
+    print_console("disk_initialize done\n");
     return Stat;
 }
 
@@ -76,11 +79,12 @@ DRESULT disk_read (
     INT size;
     byte retval;
     word i;
-    for (i=0;i<(count*512);i++)
-        *(byte*)(SHARED_ADDR+i) = buff[i];
     
-    if (drv || !count) return RES_PARERR;
+    print_console("disk_read enter\n");
+    //if (drv || !count) return RES_PARERR;
+    print_console("drv ok\n");
     if (Stat & STA_NOINIT) return RES_NOTRDY;
+    print_console("sta ok\n");
 
     *(byte*) MMIO_RETVAL = STA_VOID;
     *(byte*) MMIO_CMD = CMD_READ;    
@@ -95,6 +99,9 @@ DRESULT disk_read (
     while(*(byte*) MMIO_RETVAL == STA_VOID);
     retval = *(byte*) MMIO_RETVAL;
     
+    print_console("copy buffer\n");
+    for (i=0;i<(count*512);i++)
+        *(byte*)(SHARED_ADDR+i) = buff[i];
 
     return retval;
 }

snes/fatfstest/ff.h

@@ -38,7 +38,7 @@
 /  performance and code efficiency. */
 
 
-#define _FS_READONLY	1
+#define _FS_READONLY	0
 /* Setting _FS_READONLY to 1 defines read only configuration. This removes
 /  writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename,
 /  f_truncate and useless f_getfree. */

snes/fatfstest/main.c

@@ -5,12 +5,29 @@
 #include "ressource.h";
 #include "PPU.h"
 #include "debug.h"
+#include "ff.h"
 
 
 #include <stdlib.h>
+#include <string.h>
+#include <time.h>
 
 padStatus pad1;
 
+
+WORD acc_size;				/* Work register for fs command */
+WORD acc_files, acc_dirs;
+FILINFO finfo;
+
+FATFS fatfs[2];				/* File system object for each logical drive */
+BYTE buff[512];			/* Working buffer */
+
+FATFS *fs;
+DIR dir;				/* Directory object */
+FIL file1, file2;		/* File object */
+DWORD p1, p2, p3;
+
+
 void initInternalRegisters(void) {
 	characterLocation[0] = 0x0000;
 	characterLocation[1] = 0x0000;
@@ -24,14 +41,73 @@ void preInit(void) {
 	// Insert code here to be executed before register init
 }
 
+DWORD get_fattime ()
+{
+    time_t rawtime;
+    struct tm * ptm;
+    //time ( &rawtime );
+    ptm = gmtime ( &rawtime );
+
+    return	  ((DWORD)(ptm->tm_year - 80) << 25)
+  			| ((DWORD)(ptm->tm_mon +1) << 21)
+  			| ((DWORD)ptm->tm_mday << 16)
+  			| ((DWORD)ptm->tm_hour << 11)
+  			| ((DWORD)ptm->tm_min << 5)
+  			| ((DWORD)ptm->tm_sec >> 1);
+}
+
+
+static
+FRESULT scan_files (char* path)
+{
+	DIR dirs;
+	FRESULT res;
+	int i;
+    
+	if ((res = f_opendir(&dirs, path)) == FR_OK) {
+		i = strlen(path);
+        //printf("Ok\n");
+		while (((res = f_readdir(&dirs, &finfo)) == FR_OK) && finfo.fname[0]) {
+			if (finfo.fattrib & AM_DIR) {
+				acc_dirs++;
+				*(path+i) = '/'; strcpy(path+i+1, &finfo.fname[0]);
+				res = scan_files(path);
+				*(path+i) = '\0';
+				if (res != FR_OK) break;
+			} else {
+				acc_files++;
+				acc_size += finfo.fsize;
+			}
+		}
+	}
+    print_console("scan_files ret\n");
+	return res;
+}
+
+
+void put_rc (FRESULT rc)
+{
+	char *p;
+    static char str[] =
+		"OK\0" "NOT_READY\0" "NO_FILE\0" "FR_NO_PATH\0" "INVALID_NAME\0" "INVALID_DRIVE\0"
+		"DENIED\0" "EXIST\0" "RW_ERROR\0" "WRITE_PROTECTED\0" "NOT_ENABLED\0"
+		"NO_FILESYSTEM\0" "INVALID_OBJECT\0" "MKFS_ABORTED\0";
+	FRESULT i;
+
+	for (p = str, i = 0; i != rc && *p; i++) {
+		while(*p++);
+	}
+	print_console(p);
+}
+
+void halt(void) {
+    while(1);
+    
+}
 void main(void) {
 	word i,j;
-	word crc01;
+    BYTE res;
-	word crc02;
-	padStatus pad1;
-	char line_header[32] = "OK2";
 	initInternalRegisters();
-
 	*(byte*) 0x2105 = 0x01;	// MODE 1 value
 	*(byte*) 0x212c = 0x01; // Plane 0 (bit one) enable register
 	*(byte*) 0x212d = 0x00;	// All subPlane disable
@@ -39,8 +115,44 @@ void main(void) {
 
     debug_enable();
     print_screen("FATFS TEST",0);
-    print_console("Debugging console  test\n");
+    print_console("mount   ");
-    print_console("test me\n");
+
+	put_rc(f_mount(0, &fatfs[0]));
+
+    print_console("disk_initialize  \n");
+    disk_initialize(0);
+    print_console("disk_read  \n");
+    disk_read(0,buff,0xaabb,1);
+    print_console("disk_done  \n");
+    
+
+    halt();
+	
+	res = f_getfree("/", &p2, &fs);
+	if (res) { 
+	    put_rc(res); 
+	}
+	/*
+	printf("FAT type = %u\nBytes/Cluster = %lu\nNumber of FATs = %u\n"
+				 "Root DIR entries = %u\nSectors/FAT = %lu\nNumber of clusters = %lu\n"
+				 "FAT start (lba) = %lu\nDIR start (lba,clustor) = %lu\nData start (lba) = %lu\n",
+			(WORD)fs->fs_type, (DWORD)fs->csize * 512, (WORD)fs->n_fats,
+			fs->n_rootdir, (DWORD)fs->sects_fat, (DWORD)fs->max_clust - 2,
+			fs->fatbase, fs->dirbase, fs->database
+	);
+	*/
+	acc_size = acc_files = acc_dirs = 0;
+	res = scan_files("/");
+	if (res) { 
+	    put_rc(res); 
+	}
+	/*
+	printf("%u files, %lu bytes.\n%u folders.\n"
+				 "%lu KB total disk space.\n%lu KB available.\n",
+			acc_files, acc_size, acc_dirs,
+			(fs->max_clust - 2) * (fs->csize / 2), p2 * (fs->csize / 2)
+	);
+	*/
 	
 	while(1){
 		while(!pad1.start) {

snesram.tmproj

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>currentDocument</key>
+	<string>snes/fatfstest/diskio.c</string>
 	<key>documents</key>
 	<array>
 		<dict>
@@ -75,6 +77,146 @@
 			<key>firstVisibleLine</key>
 			<integer>211</integer>
 		</dict>
+		<key>snes/fatfstest/data.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>0</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>snes/fatfstest/debug.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>71</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>43</integer>
+		</dict>
+		<key>snes/fatfstest/debug.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>19</integer>
+				<key>line</key>
+				<integer>4</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>snes/fatfstest/diskio.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>9</integer>
+				<key>line</key>
+				<integer>7</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>snes/fatfstest/diskio.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>28</integer>
+				<key>line</key>
+				<integer>50</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>3</integer>
+		</dict>
+		<key>snes/fatfstest/event.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>0</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>snes/fatfstest/ff.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>169</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>136</integer>
+		</dict>
+		<key>snes/fatfstest/ff.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>22</integer>
+				<key>line</key>
+				<integer>40</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>49</integer>
+		</dict>
+		<key>snes/fatfstest/main.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>114</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>98</integer>
+		</dict>
+		<key>snes/fatfstest/pad.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>0</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
 		<key>tools/bsnes/cart/cart.cpp</key>
 		<dict>
 			<key>caret</key>
@@ -103,6 +245,118 @@
 			<key>firstVisibleLine</key>
 			<integer>24</integer>
 		</dict>
+		<key>tools/bsnes/chip/cmmio/cmmio.cpp</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>14</integer>
+				<key>line</key>
+				<integer>34</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>tools/bsnes/chip/cmmio/cmmio.hpp</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>16</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>tools/bsnes/chip/fatfs/config.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>1</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>tools/bsnes/chip/fatfs/diskio.cpp</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>0</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>89</integer>
+		</dict>
+		<key>tools/bsnes/chip/fatfs/diskio.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>28</integer>
+				<key>line</key>
+				<integer>50</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>11</integer>
+		</dict>
+		<key>tools/bsnes/chip/fatfs/fatfs.cpp</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>23</integer>
+				<key>line</key>
+				<integer>69</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>tools/bsnes/chip/fatfs/fatfs.hpp</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>0</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
+		<key>tools/bsnes/chip/fatfs/integer.h</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>0</integer>
+			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+		</dict>
 		<key>tools/bsnes/cpu/scpu/memory/memory.hpp</key>
 		<dict>
 			<key>caret</key>
@@ -117,10 +371,139 @@
 			<key>firstVisibleLine</key>
 			<integer>0</integer>
 		</dict>
+		<key>tools/ffsample/linux/diskio.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>141</integer>
 			</dict>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>115</integer>
+		</dict>
+		<key>tools/ffsample/linux/main.c</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>63</integer>
+			</dict>
+			<key>columnSelection</key>
+			<false/>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>149</integer>
+			<key>selectFrom</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>52</integer>
+			</dict>
+			<key>selectTo</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>63</integer>
+			</dict>
+		</dict>
+		<key>tools/wdcheader/TIME.H</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>13</integer>
+				<key>line</key>
+				<integer>103</integer>
+			</dict>
+			<key>columnSelection</key>
+			<false/>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>71</integer>
+			<key>selectFrom</key>
+			<dict>
+				<key>column</key>
+				<integer>12</integer>
+				<key>line</key>
+				<integer>103</integer>
+			</dict>
+			<key>selectTo</key>
+			<dict>
+				<key>column</key>
+				<integer>18</integer>
+				<key>line</key>
+				<integer>103</integer>
+			</dict>
+		</dict>
+		<key>tools/wdcheader/WCHAR.H</key>
+		<dict>
+			<key>caret</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>76</integer>
+			</dict>
+			<key>columnSelection</key>
+			<false/>
+			<key>firstVisibleColumn</key>
+			<integer>0</integer>
+			<key>firstVisibleLine</key>
+			<integer>0</integer>
+			<key>selectFrom</key>
+			<dict>
+				<key>column</key>
+				<integer>74</integer>
+				<key>line</key>
+				<integer>76</integer>
+			</dict>
+			<key>selectTo</key>
+			<dict>
+				<key>column</key>
+				<integer>0</integer>
+				<key>line</key>
+				<integer>76</integer>
+			</dict>
+		</dict>
+	</dict>
+	<key>openDocuments</key>
+	<array>
+		<string>snes/fatfstest/debug.c</string>
+		<string>tools/bsnes/chip/cmmio/cmmio.hpp</string>
+		<string>tools/bsnes/chip/cmmio/cmmio.cpp</string>
+		<string>snes/fatfstest/ff.h</string>
+		<string>snes/fatfstest/ff.c</string>
+		<string>tools/ffsample/linux/main.c</string>
+		<string>snes/fatfstest/pad.h</string>
+		<string>snes/fatfstest/event.c</string>
+		<string>snes/fatfstest/main.c</string>
+		<string>tools/wdcheader/TIME.H</string>
+		<string>tools/wdcheader/WCHAR.H</string>
+		<string>snes/fatfstest/debug.h</string>
+		<string>tools/ffsample/linux/diskio.c</string>
+		<string>snes/fatfstest/data.h</string>
+		<string>tools/bsnes/chip/fatfs/fatfs.cpp</string>
+		<string>snes/fatfstest/diskio.c</string>
+		<string>snes/fatfstest/diskio.h</string>
+		<string>tools/bsnes/chip/fatfs/config.h</string>
+		<string>tools/bsnes/chip/fatfs/diskio.cpp</string>
+		<string>tools/bsnes/chip/fatfs/diskio.h</string>
+		<string>tools/bsnes/chip/fatfs/integer.h</string>
+		<string>tools/bsnes/chip/fatfs/fatfs.hpp</string>
+	</array>
 	<key>showFileHierarchyDrawer</key>
 	<false/>
 	<key>windowFrame</key>
-	<string>{{0, 51}, {1110, 827}}</string>
+	<string>{{0, 55}, {1110, 823}}</string>
 </dict>
 </plist>

tools/bsnes/chip/fatfs/fatfs.cpp

@@ -67,7 +67,7 @@ void FATFS::mmio_write(unsigned addr, uint8 data) {
           case CMD_INIT:
               printf("FATFS::mmio_write CMD_INIT \n");
               command = CMD_INIT;
-              disk_initialize(0);
+              retval = disk_initialize(0);
               break;
           case CMD_READ:
               printf("FATFS::mmio_write CMD_READ \n");