diff --git a/avr/usbload/commandline/snesuploader b/avr/usbload/commandline/snesuploader
index 69070b2..efc207e 100755
Binary files a/avr/usbload/commandline/snesuploader and b/avr/usbload/commandline/snesuploader differ
diff --git a/avr/usbload/commandline/snesuploader.c b/avr/usbload/commandline/snesuploader.c
index 2ac9864..6aa8f3f 100644
--- a/avr/usbload/commandline/snesuploader.c
+++ b/avr/usbload/commandline/snesuploader.c
@@ -195,20 +195,21 @@ int main(int argc, char **argv)
                     exit(-1);
                 } 
                 addr += SEND_BUFFER_SIZE;
-                break;
+                //break;
             }
-            dump_packet(0x00000,SEND_BUFFER_SIZE, read_buffer);
+            //dump_packet(0x00000,SEND_BUFFER_SIZE, read_buffer);
             memcpy(crc_buffer + cnt_crc, read_buffer, READ_BUFFER_SIZE);
             cnt_crc += READ_BUFFER_SIZE;
             if (cnt_crc >= READ_BUFFER_SIZE) {
-                crc = do_crc(crc_buffer, BANK_SIZE);
+                crc = do_crc(crc_buffer, READ_BUFFER_SIZE);
                 printf ("bank=0x%02x  crc=0x%04x\n", bank, crc);
                 memset(crc_buffer, 0, BUFFER_CRC);
                 bank++;
                 cnt_crc = 0;
+                break;
             }
             
-            break;
+            //break;
         }
         
         /*
diff --git a/avr/usbload/crc.c b/avr/usbload/crc.c
index 1fae813..ef3ea5b 100644
--- a/avr/usbload/crc.c
+++ b/avr/usbload/crc.c
@@ -27,6 +27,7 @@ uint16_t do_crc(uint8_t * data, uint16_t size)
     uint16_t i;
     for (i = 0; i < size; i++) {
         crc = crc_xmodem_update(crc, data[i]);
+        
     }
     return crc;
 }
@@ -41,15 +42,18 @@ uint16_t do_crc_update(uint16_t crc, uint8_t * data, uint16_t size)
 }
 
 
-void crc_check_bulk_memory(uint32_t bottom_addr,uint32_t top_addr)
+uint16_t crc_check_bulk_memory(uint32_t bottom_addr,uint32_t top_addr)
 {
     uint16_t crc = 0;
     uint32_t addr = 0;
     uint8_t req_bank = 0;
     sram_bulk_read_start(bottom_addr);
+    printf("crc_check_bulk_memory: bottom_addr=0x%08lx top_addr=0x%08lx\n",
+        bottom_addr, top_addr);
+    
     for (addr = bottom_addr; addr < top_addr; addr++) {
         if (addr && addr % 0x8000 == 0) {
-            printf("crc_check_bulk: bank=0x%02x addr=0x%08lx crc=0x%04x\n",
+            printf("crc_check_bulk_memory: bank=0x%02x addr=0x%08lx crc=0x%04x\n",
                 req_bank,addr,crc);
             req_bank++;
             crc = 0;
@@ -57,11 +61,11 @@ void crc_check_bulk_memory(uint32_t bottom_addr,uint32_t top_addr)
         crc = crc_xmodem_update(crc, sram_bulk_read());
         sram_bulk_read_next();
     }
-    sram_bulk_read_end();
     if (addr % 0x8000 == 0)
-        printf("crc_check_bulk: bank=0x%02x addr=0x%08lx crc=0x%04x\n",
+        printf("crc_check_bulk_memory: bank=0x%02x addr=0x%08lx crc=0x%04x\n",
             req_bank,addr,crc);
-
+    sram_bulk_read_end();
+    return crc;
 }
 
 
diff --git a/avr/usbload/crc.h b/avr/usbload/crc.h
index 146ab4d..311d316 100644
--- a/avr/usbload/crc.h
+++ b/avr/usbload/crc.h
@@ -11,6 +11,6 @@ uint16_t do_crc(uint8_t * data,uint16_t size);
 uint16_t do_crc_update(uint16_t crc,uint8_t * data,uint16_t size);
 void crc_check_memory(uint32_t bottom_addr,uint32_t top_addr,uint8_t *buffer);
 uint16_t crc_check_memory_range(uint32_t start_addr, uint32_t size,uint8_t *buffer);
-void crc_check_bulk_memory(uint32_t bottom_addr,uint32_t top_addr);
+uint16_t crc_check_bulk_memory(uint32_t bottom_addr,uint32_t top_addr);
 
 #endif
diff --git a/avr/usbload/dump.c b/avr/usbload/dump.c
index d242a98..7f02afb 100644
--- a/avr/usbload/dump.c
+++ b/avr/usbload/dump.c
@@ -47,19 +47,16 @@ void dump_memory(uint32_t bottom_addr, uint32_t top_addr)
 {
     uint32_t addr;
     uint8_t byte;
-    
-    //sram_bulk_read_start(bottom_addr);
-    bottom_addr = 0x00;
-    top_addr = 0x80;
-    
-    printf("%08lx - %08lx\n",bottom_addr, top_addr);
+    printf("dump_memory: bottom_addr=%08lx top_addr=%08lx\n",bottom_addr, top_addr);
+    sram_bulk_read_start(bottom_addr);
     printf("%08lx:", bottom_addr);
     for ( addr = bottom_addr; addr < top_addr; addr++) {
         if (addr%0x10 == 0)
             printf("\n%08lx:", addr);
-        byte = sram_read(addr);
-        //sram_bulk_read_next();
+        byte = sram_bulk_read();
+        sram_bulk_read_next();
         printf(" %02x", byte);
     }
-    //sram_bulk_read_end();
+    printf("\n");
+    sram_bulk_read_end();
 }
diff --git a/avr/usbload/main.c b/avr/usbload/main.c
index cfd86d5..d4436c4 100644
--- a/avr/usbload/main.c
+++ b/avr/usbload/main.c
@@ -12,12 +12,13 @@
 #include "uart.h"
 #include "sram.h"
 #include "debug.h"
+#include "dump.h"
 #include "crc.h"
 #include "usb_bulk.h"
 
 extern FILE uart_stdout;
 
-uint8_t debug_level = ( DEBUG | DEBUG_USB | DEBUG_USB_TRANS | DEBUG_SRAM);
+uint8_t debug_level = ( DEBUG | DEBUG_USB);
 
 uint8_t read_buffer[TRANSFER_BUFFER_SIZE];
 uint32_t req_addr = 0;
@@ -53,7 +54,7 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
         req_bank_size = 1 << rq->wValue.word;
         sync_errors = 0;
         crc = 0;
-        debug(DEBUG_USB,"USB_UPLOAD_INIT: bank_size=0x%x\n", req_bank_size);
+        debug(DEBUG_USB,"USB_UPLOAD_INIT: bank_size=0x%04x\n", req_bank_size);
 
 /*
  * -------------------------------------------------------------------------
@@ -292,7 +293,7 @@ int main(void)
     
     system_init();
     printf("Sytem Init\n");
-    
+
     avr_bus_active();
     usbInit();
     printf("USB Init\n");
@@ -320,9 +321,14 @@ int main(void)
     usbDeviceDisconnect();      
     printf("USB disconnect\n");
     
-    crc_check_bulk_memory(0x000000,0x8000);
+    crc_check_bulk_memory(0x000000, 0x80000);
+
+#if 0    
+    dump_memory(0x0000,0x0080);
+    printf("crc=0x%x\n",crc_check_bulk_memory(0x000000, 0x80));
+#endif
     
-    dump_memory(0x00,0x80);
+    dump_memory(0x7f00,0x8000);
     
     printf("Disable snes WR\n");
     snes_wr_disable(); 
diff --git a/avr/usbload/sram.c b/avr/usbload/sram.c
index 1603ab7..13e2ec2 100644
--- a/avr/usbload/sram.c
+++ b/avr/usbload/sram.c
@@ -131,7 +131,7 @@ inline uint8_t sram_bulk_read(void)
 
 void sram_bulk_read_end(void)
 {
-    debug(DEBUG_SRAM,"sram_bulk_read_end:");
+    debug(DEBUG_SRAM,"sram_bulk_read_end:\n");
 
     AVR_RD_PORT |= (1 << AVR_RD_PIN);
     AVR_CS_PORT |= (1 << AVR_CS_PIN);
diff --git a/avr/usbload/usbconfig.h b/avr/usbload/usbconfig.h
index 85d1934..1afdae5 100644
--- a/avr/usbload/usbconfig.h
+++ b/avr/usbload/usbconfig.h
@@ -141,7 +141,7 @@ section at the end of this file).
  * of the macros usbDisableAllRequests() and usbEnableAllRequests() in
  * usbdrv.h.
  */
-#define USB_CFG_LONG_TRANSFERS          1
+#define USB_CFG_LONG_TRANSFERS          0
 /* Define this to 1 if you want to send/receive blocks of more than 254 bytes
  * in a single control-in or control-out transfer. Note that the capability
  * for long transfers increases the driver size.