diff --git a/poc/avr_sdcard/Makefile b/poc/avr_sdcard/Makefile
index ef1d310..be6116c 100644
--- a/poc/avr_sdcard/Makefile
+++ b/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.PL2303-00002126
+AVRDUDE_PORT = /dev/tty.PL2303-00001124 
 
 AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
 
diff --git a/poc/avr_sdcard/main.c b/poc/avr_sdcard/main.c
index 98809d6..835b986 100644
--- a/poc/avr_sdcard/main.c
+++ b/poc/avr_sdcard/main.c
@@ -58,8 +58,9 @@ extern FILE uart_stdout;
 //#define FILENAME	"vram2.smc"  //ok
 //#define FILENAME	"super02.smc"
 #define FILENAME	"crc.smc"
+//#define FILENAME	"banks.smc"
 
-#define ROMSIZE      2
+#define ROMSIZE      4
 #define DUMPNAME	"dump256.smc"
 #define BUFFER_SIZE 512
 #define BLOCKS 		(ROMSIZE << 8)
@@ -344,8 +345,8 @@ int main(void)
         	fat_read_file (fat_cluster,read_buffer,block_cnt);
 			
 			if (block_cnt && block_cnt % 64 == 0){
-				bank_cnt++;
 				printf("Write Ram Bank: 0x%x Addr: 0x%lx Block: %x CRC: %x\n",bank_cnt,rom_addr,block_cnt,crc);
+				bank_cnt++;
 				crc = 0;
 			}
 			crc = do_crc_update(crc,read_buffer,512);
@@ -376,12 +377,13 @@ int main(void)
 #if 1
 	block_cnt = 0;
 	crc = 0;
+    bank_cnt=0x00;
 	rom_addr = 0x000000;
     for (block_cnt=0; block_cnt<BLOCKS; block_cnt++) {
     	sram_read_buffer(rom_addr,read_buffer,512);
 		if (block_cnt && block_cnt % 64 == 0){
-			bank_cnt++;
 			printf("Read Ram Bank: 0x%x Addr: 0x%lx Block: %x CRC: %x\n",bank_cnt,rom_addr,block_cnt,crc);
+			bank_cnt++;
 			crc = 0;
 		}
 		crc = do_crc_update(crc,read_buffer,512);
diff --git a/snes/crc/Makefile b/snes/crc/Makefile
index 673d73d..8b141c0 100644
--- a/snes/crc/Makefile
+++ b/snes/crc/Makefile
@@ -43,11 +43,25 @@ debugger:
 	$(EMU_DEBUG) $(APP)
 
 upload:
-	ucon64 $(APP)
+	ucon64 -chk $(APP)
 	cp -rv $(APP) /Volumes/SNES
 	sync
 	diskutil unmount /Volumes/SNES
 
+rand:
+	dd if=/dev/urandom of=tmp.rand bs=32k count=6 
+	dd if=$(APP) of=tmp.app bs=32k count=2
+	cat tmp.app tmp.rand > $(APP)
+	rm tmp.rand tmp.app   
+	ucon64 -chk $(APP)
+
+rand16:
+	dd if=/dev/urandom of=tmp.rand bs=32k count=14 
+	dd if=$(APP) of=tmp.app bs=32k count=2
+	cat tmp.app tmp.rand > $(APP)
+	rm tmp.rand tmp.app   
+	ucon64 -chk $(APP)
+
 crc:
 	python ../../scripts/crc_xmodem.py $(APP)
 
diff --git a/snes/crc/StartupSnes.asm b/snes/crc/StartupSnes.asm
index e856c70..994eda2 100644
--- a/snes/crc/StartupSnes.asm
+++ b/snes/crc/StartupSnes.asm
@@ -207,7 +207,7 @@ GAME_TITLE		    FCC	/GAME TITLE          !/
 				        ;012345678901234567890;
 MAP_MODE            BYTE	$20
 CARTRIDGE_SIZE		BYTE	$00
-ROM_SIZE            BYTE	$08
+ROM_SIZE            BYTE	$09
 RAM_SIZE            BYTE	$00
 DESTINATION_CODE	BYTE	$00
 FIXED_VALUE1		BYTE	$33
diff --git a/snes/crc/main.c b/snes/crc/main.c
index 9b9dfc2..5fcf990 100644
--- a/snes/crc/main.c
+++ b/snes/crc/main.c
@@ -33,7 +33,6 @@ void main(void) {
 	char line_header[32] = "BANK CRC  ADDR   123456789ABCDEF";
     char line[32] = "                             ";	
 	char test_buffer[] = "da";
-	char far *  pointer;
     unsigned long addr; 
 	initInternalRegisters();
 
@@ -47,20 +46,14 @@ void main(void) {
     writeln(line_header,0);
 
 	while(1){
-		pointer = (void*)0x008000;
 		addr = 0x008000;
-		
 		crc02 = crc_update(test_buffer,2);
-		//crc01 = crc_update(pointer,255);
 		for(j=0; j<16; j++) {
-    		//crc01 = crc_update(pointer,0x8000);
     		crc01 = crc_update_mem(addr,0x8000);
-    		
 			int2hex((unsigned long)j,&line[0],4);
 			int2hex((unsigned long)crc01,&line[5],4);
 			int2hex((unsigned long)addr,&line[10],6);
             writeln(line,j+1);
-    		pointer += 0x010000;
     		addr += 0x010000;
 		}
 		while(!pad1.start) {