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V30J: Fix SA1 sram write

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Mayne thanks to Oatburner and skaman.
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sanni 2018-03-12 13:58:03 +01:00 committed by GitHub
parent 9c2fcae43d
commit 742e96151a
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3 changed files with 56 additions and 67 deletions
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6
Cart_Reader/Cart_Reader.ino
View File

@ -2,8 +2,8 @@
Cartridge Reader for Arduino Mega2560
Author: sanni
Date: 2018-02-02
Version: V30I
Date: 2018-03-12
Version: V30J
SD lib: https://github.com/greiman/SdFat
LCD lib: https://github.com/adafruit/Adafruit_SSD1306
@ -35,7 +35,7 @@
infinest - help with GB Memory cart
**********************************************************************************/
char ver[5] = "V30I";
char ver[5] = "V30J";
/******************************************
Define Starting Point

2
Cart_Reader/GB.ino
View File

@ -16,7 +16,7 @@ uint16_t sramEndAddress = 0;
// GBx start menu
static const char gbxMenuItem1[] PROGMEM = "Game Boy (Color)";
static const char gbxMenuItem2[] PROGMEM = "Game Boy Advance";
static const char gbxMenuItem3[] PROGMEM = "NP GB Memory";
static const char gbxMenuItem3[] PROGMEM = "NintPower GB Memory";
static const char* const menuOptionsGBx[] PROGMEM = {gbxMenuItem1, gbxMenuItem2, gbxMenuItem3};
// GB menu items

115
Cart_Reader/SNES.ino
View File

@ -27,7 +27,7 @@ boolean NP = false;
*****************************************/
// SNES/Nintendo Power SF Memory start menu
static const char snsMenuItem1[] PROGMEM = "SNES SFC";
static const char snsMenuItem2[] PROGMEM = "NP SF Memory";
static const char snsMenuItem2[] PROGMEM = "NintPower SF Memory";
static const char* const menuOptionsSNS[] PROGMEM = {snsMenuItem1, snsMenuItem2};
// SNES menu items
@ -1178,59 +1178,45 @@ void writeSRAM (boolean browseFile) {
// Direct writes to BW-RAM (SRAM) in banks 0x40-0x43 don't work
// Break BW-RAM (SRAM) into 0x2000 blocks
// Use $2225 to map BW-RAM block to 0x6000-0x7FFF
// Writes must be to entire address range 0x0000-0x7FFF
byte lastBlock = 0;
lastBlock = lastByte / 0x2000;
// Writing SRAM on SA1 needs CS(PH3) to be high
PORTH |= (1 << 3);
// PORTH |= (1 << 3);
// Setup BW-RAM
// Set 0x2224 (SNES BMAPS) to map SRAM Block 0 to 0x6000-0x7FFF
writeBank_SNES(0, 0x2224, 0);
// Set 0x2226 (SNES SBWE) to 0x80 Write Enable
writeBank_SNES(0, 0x2226, 0x80);
// Set 0x2228 (SNES BWPA) to 0x00 BW-RAM Write-Protected Area
writeBank_SNES(0, 0x2228, 0);
delay(1000);
// Use $2224 (SNES) to map BW-RAM block to 0x6000-0x7FFF
// Use $2226 (SNES) to write enable the BW-RAM
byte firstByte = 0;
for (byte currBlock = 0; currBlock < lastBlock; currBlock++) {
// Set 0x2225 (SA-1 BMAP) to map SRAM Block to 0x6000-0x7FFF
writeBank_SNES(0, 0x2225, currBlock);
// Set 0x2227 to 0x80 SA-1 SWBE BW-RAM Write Enable
writeBank_SNES(0, 0x2227, 0x80);
for (long currByte = 0x0000; currByte < 0x8000; currByte += 512) {
if (currByte < 0x6000) {
for (int c = 0; c < 512; c++) {
// Shift to bypass protected 1st 0x100 bytes
writeBank_SNES(0, currByte + c, currBlock + lastBlock);
}
// Set 0x2224 (SNES BMAPS) to map SRAM Block to 0x6000-0x7FFF
writeBank_SNES(0, 0x2224, currBlock);
// Set 0x2226 (SNES SBWE) to 0x80 Write Enable
writeBank_SNES(0, 0x2226, 0x80);
for (long currByte = 0x6000; currByte < 0x8000; currByte += 512) {
myFile.read(sdBuffer, 512);
if ((currBlock == 0) && (currByte == 0x6000)) {
firstByte = sdBuffer[0];
}
else {
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
writeBank_SNES(0, currByte + c, sdBuffer[c]);
}
for (int c = 0; c < 512; c++) {
writeBank_SNES(0, currByte + c, sdBuffer[c]);
}
}
}
// Set 0x2227 to 0x00 SA-1 SWBE BW-RAM Write Disable
writeBank_SNES(0, 0x2227, 0x00);
// Rewrite First Byte
writeBank_SNES(0, 0x2224, 0);
writeBank_SNES(0, 0x2226, 0x80);
writeBank_SNES(0, 0x6000, firstByte);
// Disable CPU clock
clockgen.output_enable(SI5351_CLK1, 0);
/* // MOVED RESET TO AFTER VERIFY
// Reset SA1
// Set pins to input
dataIn();
// Close the file:
myFile.close();
println_Msg(F("SRAM writing finished"));
println_Msg(F("Press Button to reset"));
display_Update();
wait();
// Set reset pin to output (PH0)
DDRH |= (1 << 0);
// Switch RST(PH0) to LOW
PORTH &= ~(1 << 0);
display_Clear();
print_Msg("Resetting...");
display_Update();
delay(3000); // wait 3 secs to switch to next game
asm volatile (" jmp 0");
*/
}
// Set pins to input
@ -1690,36 +1676,39 @@ boolean eraseSRAM (byte b) {
// Direct writes to BW-RAM (SRAM) in banks 0x40-0x43 don't work
// Break BW-RAM (SRAM) into 0x2000 blocks
// Use $2225 to map BW-RAM block to 0x6000-0x7FFF
// Writes must be to entire address range 0x0000-0x7FFF
// Use $2224 to map BW-RAM block to 0x6000-0x7FFF
byte lastBlock = 0;
lastBlock = lastByte / 0x2000;
// Writing SRAM on SA1 needs CS(PH3) to be high
PORTH |= (1 << 3);
// PORTH |= (1 << 3);
// Setup BW-RAM
// Set 0x2224 (SNES BMAPS) to map SRAM Block 0 to 0x6000-0x7FFF
writeBank_SNES(0, 0x2224, 0);
// Set 0x2226 (SNES SBWE) to 0x80 Write Enable
writeBank_SNES(0, 0x2226, 0x80);
// Set 0x2228 (SNES BWPA) to 0x00 BW-RAM Write-Protected Area
writeBank_SNES(0, 0x2228, 0);
delay(1000);
// Use $2224 (SNES) to map BW-RAM block to 0x6000-0x7FFF
// Use $2226 (SNES) to write enable the BW-RAM
for (byte currBlock = 0; currBlock < lastBlock; currBlock++) {
// Set 0x2225 (SA-1 BMAP) to map SRAM Block to 0x6000-0x7FFF
writeBank_SNES(0, 0x2225, currBlock);
// Set 0x2227 to 0x80 SA-1 SWBE BW-RAM Write Enable
writeBank_SNES(0, 0x2227, 0x80);
for (long currByte = 0x0000; currByte < 0x8000; currByte += 512) {
if (currByte < 0x6000) {
for (int c = 0; c < 512; c++) {
// Shift to bypass protected 1st 0x100 bytes
writeBank_SNES(0, currByte + c, currBlock + lastBlock);
}
}
else {
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
writeBank_SNES(0, currByte + c, b);
}
// Set 0x2224 (SNES BMAPS) to map SRAM Block to 0x6000-0x7FFF
writeBank_SNES(0, 0x2224, currBlock);
// Set 0x2226 (SNES SBWE) to 0x80 Write Enable
writeBank_SNES(0, 0x2226, 0x80);
for (long currByte = 0x6000; currByte < 0x8000; currByte += 512) {
for (int c = 0; c < 512; c++) {
writeBank_SNES(0, currByte + c, b);
}
}
}
// Set 0x2227 to 0x00 SA-1 SWBE BW-RAM Write Disable
writeBank_SNES(0, 0x2227, 0x00);
// Rewrite First Byte
writeBank_SNES(0, 0x2224, 0);
writeBank_SNES(0, 0x2226, 0x80);
writeBank_SNES(0, 0x6000, b);
// Disable CPU clock
clockgen.output_enable(SI5351_CLK1, 0);
}