cartreader/Cart_Reader/NGP.ino
PsyK0p4T 18128f1063 Update NGP.ino
4M, 8M, 16M chips support added
RomVersion detection fixed
SystemType detection (NGP Monochrome or NGP Color) added
2021-07-09 00:24:21 +02:00

278 lines
5.5 KiB
C++

//******************************************
// NGP MODULE
//******************************************
#include "options.h"
#ifdef enable_NGP
static const char ngpMenuItem1[] PROGMEM = "Read Rom";
static const char ngpMenuItemReset[] PROGMEM = "Reset";
static const char* const menuOptionsNGP[] PROGMEM = {ngpMenuItem1, ngpMenuItemReset};
char ngpRomVersion[3];
uint8_t ngpSystemType;
void setup_NGP() {
// A0 - A7
DDRF = 0xff;
// A8 - A15
DDRK = 0xff;
// A16 - A20
DDRL = 0xff;
// D0 - D7
DDRC = 0x00;
// controls
// /CE0: PH3
// /CE1: PH0
// /OE: PH6
// /WE: PH5
// PWR: PH4
DDRH |= ((1 << 0) | (1 << 3) | (1 << 5) | (1 << 6));
DDRH &= ~(1 << 4);
PORTH |= ((1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6));
if (getCartInfo_NGP())
{
showCartInfo_NGP();
}
else
{
println_Msg(F("NeoGeo Pocket"));
println_Msg(F(""));
println_Msg(F(""));
println_Msg(F("Rom Size Error"));
println_Msg(F(""));
println_Msg(F("Press Button..."));
display_Update();
wait();
}
}
void ngpMenu() {
uint8_t mainMenu;
convertPgm(menuOptionsNGP, 2);
mainMenu = question_box(F("NGP Menu"), menuOptions, 2, 0);
switch (mainMenu)
{
case 0:
sd.chdir("/");
readROM_NGP(filePath, FILEPATH_LENGTH);
sd.chdir("/");
break;
case 1:
resetArduino();
break;
}
println_Msg(F(""));
println_Msg(F("Press Button..."));
display_Update();
wait();
}
bool getCartInfo_NGP() {
uint8_t *tmp;
// enter autoselect mode
dataOut();
writeByte_NGP(0x555, 0xaa);
writeByte_NGP(0x2aa, 0x55);
writeByte_NGP(0x555, 0x90);
dataIn();
cartSize = 0;
tmp = (uint8_t*)&romSize;
*(tmp + 0) = readByte_NGP(0);
*(tmp + 1) = readByte_NGP(1);
switch (romSize)
{
// 4 Mbits
// Toshiba
case 0xab98:
cartSize = 524288;
break;
// Toshiba ?
case 0x4c20:
cartSize = 524288;
break;
// 8 Mbits
// Toshiba
case 0x2c98:
cartSize = 1048576;
break;
// Samsung
case 0x2cec:
cartSize = 1048576;
break;
// 16 Mbits
// Toshiba
case 0x2f98:
cartSize = 2097152;
break;
// Samsung
case 0x2fec:
cartSize = 2097152;
break;
}
// reset to read mode
dataOut();
writeByte_NGP(0x000000, 0xf0);
if (cartSize == 0)
return false;
dataIn();
for (uint32_t addr = 0; addr < 28; addr++)
sdBuffer[addr] = readByte_NGP(addr);
if (memcmp_P(sdBuffer, PSTR("COPYRIGHT BY SNK CORPORATION"), 28) != 0 && memcmp_P(sdBuffer, PSTR(" LICENSED BY SNK CORPORATION"), 28) != 0)
return false;
snprintf(cartID, 5, "%02X%02X", readByte_NGP(0x000021), readByte_NGP(0x000020));
snprintf(ngpRomVersion, 3, "%02X", readByte_NGP(0x000022));
ngpSystemType = readByte_NGP(0x000023);
for (uint32_t i = 0; i < 17; i++)
romName[i] = readByte_NGP(0x24 + i);
return true;
}
void showCartInfo_NGP() {
display_Clear();
println_Msg(F("NGP Cart Info"));
print_Msg(F("Game: "));
println_Msg(romName);
print_Msg(F("GameID: "));
println_Msg(cartID);
print_Msg(F("Version: "));
println_Msg(ngpRomVersion);
print_Msg(F("System: "));
if (ngpSystemType == 0)
println_Msg("NGPMonochrome");
else if (ngpSystemType == 16)
println_Msg("NGPColor");
else
println_Msg("Unknown");
print_Msg(F("Rom Size: "));
print_Msg((cartSize >> 17));
println_Msg(F(" MB"));
println_Msg(F(""));
println_Msg(F("Press Button..."));
display_Update();
wait();
}
void readROM_NGP(char *outPathBuf, size_t bufferSize) {
// generate fullname of rom file
snprintf(fileName, FILENAME_LENGTH, "%s.ngp", romName);
// create a new folder for storing rom file
EEPROM_readAnything(0, foldern);
snprintf(folder, sizeof(folder), "NGP/ROM/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
// filling output file path to buffer
if (outPathBuf != NULL && bufferSize > 0)
snprintf(outPathBuf, bufferSize, "%s/%s", folder, fileName);
display_Clear();
print_Msg(F("Saving to "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// open file on sdcard
if (!myFile.open(fileName, O_RDWR | O_CREAT))
print_Error(F("Can't create file on SD"), true);
// write new folder number back to EEPROM
foldern++;
EEPROM_writeAnything(0, foldern);
// back to read mode
dataOut();
writeByte_NGP(0x0, 0xf0);
dataIn();
for (uint32_t addr = 0; addr < cartSize; addr += 512) {
// blink LED
if ((addr & ((1 << 14) - 1)) == 0)
PORTB ^= (1 << 4);
for (uint32_t i = 0; i < 512; i++)
sdBuffer[i] = readByte_NGP(addr + i);
myFile.write(sdBuffer, 512);
}
myFile.close();
}
void writeByte_NGP(uint32_t addr, uint8_t data) {
PORTF = addr & 0xff;
PORTK = (addr >> 8) & 0xff;
PORTL = (addr >> 16) & 0x1f;
PORTC = data;
// which chip to select
// 0x000000 - 0x1fffff -> /CE0
// 0x200000 - 0x3fffff -> /CE1
data = (addr & 0x00200000 ? (1 << 0) : (1 << 3));
PORTH &= ~data;
PORTH &= ~(1 << 5);
NOP;
PORTH |= data;
PORTH |= (1 << 5);
NOP; NOP;
}
uint8_t readByte_NGP(uint32_t addr) {
uint8_t data;
PORTF = addr & 0xff;
PORTK = (addr >> 8) & 0xff;
PORTL = (addr >> 16) & 0x1f;
// which chip to select
// 0x000000 - 0x1fffff -> /CE0
// 0x200000 - 0x3fffff -> /CE1
data = (addr & 0x00200000 ? (1 << 0) : (1 << 3));
PORTH &= ~data;
PORTH &= ~(1 << 6);
NOP; NOP; NOP;
data = PINC;
PORTH |= data;
PORTH |= (1 << 6);
return data;
}
#endif