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f62a215bb0
cartreader/Cart_Reader/SMS.ino
Kreeblah 8e155cf97b
Fixed build warnings
2022-02-24 15:59:25 -08:00

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//******************************************
// SEGA MASTER SYSTEM MODULE
//******************************************
#include "options.h"
#ifdef enable_MD
/******************************************
Variables
*****************************************/
/******************************************
Menu
*****************************************/
// MD menu items
static const char SMSMenuItem1[] PROGMEM = "Read Rom";
static const char SMSMenuItem2[] PROGMEM = "Read from SRAM";
static const char SMSMenuItem3[] PROGMEM = "Write to SRAM";
static const char SMSMenuItem4[] PROGMEM = "Change Retrode Mode";
static const char SMSMenuItem5[] PROGMEM = "Reset";
static const char* const menuOptionsSMS[] PROGMEM = {SMSMenuItem1, SMSMenuItem2, SMSMenuItem3, SMSMenuItem4, SMSMenuItem5};
// Set retrode_mode to true when using a retrode SMS/GG adapter
static bool retrode_mode = false;
static bool retrode_mode_sms = false; // true: SMS/Mark3 false: GG
void _smsMenu() {
// create menu with title and 2 options to choose from
unsigned char mainMenu;
// Copy menuOptions out of progmem
int noptions = sizeof(menuOptionsSMS) / sizeof(menuOptionsSMS[0]);
convertPgm(menuOptionsSMS, noptions);
mainMenu = question_box(retrode_mode ? (retrode_mode_sms ? F("Retrode:SMS") : F("Retrode:GG")) : F("SMS/GG Retrode:NO"), menuOptions, noptions, 0);
// wait for user choice to come back from the question box menu
switch (mainMenu)
{
case 0:
display_Clear();
mode = mode_SMS;
setup_SMS();
// Change working dir to root
sd.chdir("/");
readROM_SMS();
break;
case 1:
display_Clear();
mode = mode_SMS;
setup_SMS();
// Change working dir to root
sd.chdir("/");
readSRAM_SMS();
break;
case 2:
display_Clear();
mode = mode_SMS;
setup_SMS();
// Change working dir to root
sd.chdir("/");
writeSRAM_SMS();
break;
case 3:
if (!retrode_mode && !retrode_mode_sms) {
// first state (default)
retrode_mode = true; // Change to GG
} else if (retrode_mode && !retrode_mode_sms) {
// second state
retrode_mode_sms = true; // Change to SMS
} else {
// third state, reset to the first state
retrode_mode = false;
retrode_mode_sms = false;
}
break;
case 4:
// Reset
resetArduino();
break;
}
println_Msg(retrode_mode ? (retrode_mode_sms ? F("Retrode Mode SMS") : F("Retrode Mode GG")) : F("Retrode Mode Off"));
println_Msg(F(""));
println_Msg(F("Press Button..."));
display_Update();
wait();
}
void smsMenu() {
for (;;) _smsMenu();
}
/******************************************
Setup
*****************************************/
void setup_SMS() {
// Set Address Pins to Output
//A0-A7
DDRF = 0xFF;
//A8-A14
DDRK = 0xFF;
//A15
DDRH |= (1 << 3);
if (retrode_mode) {
// Revert changes from the other mode
PORTH &= ~((1 << 0) | (1 << 3) | (1 << 5));
PORTL &= ~(1 << 1);
DDRH &= ~((1 << 0) | (1 << 5));
DDRL &= ~((1 << 1));
// Set Control Pins to Output OE(PH6)
DDRH |= (1 << 6);
// WR(PL5) and RD(PL6)
DDRL |= (1 << 5) | (1 << 6);
// Setting OE(PH6) HIGH
PORTH |= (1 << 6);
// Setting WR(PL5) and RD(PL6) HIGH
PORTL |= (1 << 5) | (1 << 6);
} else {
// Revert changes from the other mode
PORTL &= ~((1 << 5) | (1 << 6));
DDRL &= ~((1 << 5) | (1 << 6));
// Set Control Pins to Output RST(PH0) WR(PH5) OE(PH6)
DDRH |= (1 << 0) | (1 << 5) | (1 << 6);
// CE(PL1)
DDRL |= (1 << 1);
// Setting RST(PH0) WR(PH5) OE(PH6) HIGH
PORTH |= (1 << 0) | (1 << 5) | (1 << 6);
// CE(PL1)
PORTL |= (1 << 1);
}
// ROM has 16KB banks which can be mapped to one of three slots via register writes
// Register Slot Address space
// $fffd 0 $0000-$3fff
// $fffe 1 $4000-$7fff
// $ffff 2 $8000-$bfff
// Disable sram
writeByte_SMS(0xFFFC, 0);
// Map first 3 banks so we can read-out the header info
writeByte_SMS(0xFFFD, 0);
writeByte_SMS(0xFFFE, 1);
writeByte_SMS(0xFFFF, 2);
delay(400);
// Print all the info
getCartInfo_SMS();
}
/******************************************
Low level functions
*****************************************/
void writeByte_SMS(word myAddress, byte myData) {
if (retrode_mode && !retrode_mode_sms) {
// Set Data Pins (D8-D15) to Output
DDRA = 0xFF;
} else {
// Set Data Pins (D0-D7) to Output
DDRC = 0xFF;
}
// Set address
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
if (!retrode_mode) {
// CE(PH3) and OE(PH6) are connected
PORTH = (PORTH & 0b11110111) | ((myAddress >> 12) & 0b00001000);
}
// Output data
if (retrode_mode && !retrode_mode_sms) {
PORTA = myData;
} else {
PORTC = myData;
}
// Arduino running at 16Mhz -> one nop = 62.5ns
// Wait till output is stable
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
if (retrode_mode) {
// Switch WR(PL5) and OE/CE(PH6) to LOW
PORTL &= ~(1 << 5);
PORTH &= ~(1 << 6);
} else {
// Switch CE(PL1) and WR(PH5) to LOW
PORTL &= ~(1 << 1);
PORTH &= ~(1 << 5);
}
// Leave WR low for at least 60ns
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
if (retrode_mode) {
// Switch WR(PL5) and OE/CE(PH6) to HIGH
PORTH |= (1 << 6);
PORTL |= (1 << 5);
} else {
// Switch CE(PL1) and WR(PH5) to HIGH
PORTH |= (1 << 5);
PORTL |= (1 << 1);
}
// Leave WR high for at least 50ns
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
if (retrode_mode && !retrode_mode_sms) {
// Set Data Pins (D8-D15) to Input
DDRA = 0x00;
} else {
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
}
}
byte readByte_SMS(word myAddress) {
if (retrode_mode && !retrode_mode_sms) {
// Set Data Pins (D8-D15) to Input
DDRA = 0x00;
} else {
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
}
// Set Address
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
if (!retrode_mode) {
// CE(PH3) and OE(PH6) are connected
PORTH = (PORTH & 0b11110111) | ((myAddress >> 12) & 0b00001000);
}
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
if (retrode_mode) {
// Switch RD(PL6) and OE(PH6) to LOW
PORTL &= ~(1 << 6);
PORTH &= ~(1 << 6);
} else {
// Switch CE(PL1) and OE(PH6) to LOW
PORTL &= ~(1 << 1);
PORTH &= ~(1 << 6);
}
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Read
byte tempByte = (retrode_mode && !retrode_mode_sms) ? PINA : PINC;
if (retrode_mode) {
// Switch RD(PL6) and OE(PH6) to HIGH
PORTH |= (1 << 6);
PORTL |= (1 << 6);
} else {
// Switch CE(PL1) and OE(PH6) to HIGH
PORTH |= (1 << 6);
PORTL |= (1 << 1);
}
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
return tempByte;
}
//unsigned char hex2bcd (unsigned char x) {
// unsigned char y;
// y = (x / 10) << 4;
// y = y | (x % 10);
//return (y);
//}
byte readNibble(byte data, byte number) {
return ((data >> (number * 4)) & 0xf);
}
/******************************************
MASTER SYSTEM functions
*****************************************/
void getCartInfo_SMS() {
// Rom size
switch (readNibble(readByte_SMS(0x7fff), 0)) {
case 0xa:
// Adding UL gets rid of integer overflow compiler warning
cartSize = 8 * 1024UL;
break;
case 0xb:
cartSize = 16 * 1024UL;
break;
case 0xc:
cartSize = 32 * 1024UL;
break;
case 0xd:
cartSize = 48 * 1024UL;
break;
case 0xe:
cartSize = 64 * 1024UL;
break;
case 0xf:
cartSize = 128 * 1024UL;
break;
case 0x0:
cartSize = 256 * 1024UL;
break;
case 0x1:
cartSize = 512 * 1024UL;
break;
case 0x2:
cartSize = 512 * 1024UL;
break;
case 0x3:
// 0x3 is (only?) used in The Pro Yakyuu '91 (Game Gear)
cartSize = 128 * 1024UL;
break;
default:
cartSize = 48 * 1024UL;
// LED Error
setColor_RGB(0, 0, 255);
break;
}
// Read TMR SEGA string
for (byte i = 0; i < 8; i++) {
romName[i] = char(readByte_SMS(0x7ff0 + i));
}
romName[8] = '\0';
// Attempt to detect cart size by checking if TMR SEGA is mirrored
unsigned long mirror_offset = cartSize;
char romName2[9];
while (mirror_offset < 1024 * 1024UL) {
byte bank = 1 + (mirror_offset / (16 * 1024UL));
writeByte_SMS(0xFFFE, bank);
for (byte i = 0; i < 8; i++) {
romName2[i] = char(readByte_SMS(0x7ff0 + i));
}
romName2[8] = '\0';
// print_Msg(F("Name2: "));
// println_Msg(romName2);
// print_Msg(F("from bank "));
// print_Msg(bank);
// print_Msg(F(" offset "));
// print_Msg_PaddedHex32(mirror_offset + 0x7ff0);
// println_Msg(F(""));
if (strcmp(romName2, romName) == 0) {
break;
}
if (cartSize == 48 * 1024UL) {
cartSize = 64 * 1024UL;
} else {
cartSize *= 2;
}
mirror_offset = cartSize;
}
writeByte_SMS(0xFFFE, 1);
// Fix for "Fantasy Zone (J) (V1.0)" that has not the normal header, but "COPYRIGHT SEGAPRG. BY T.ASAI".
char headerFZ[29];
if (strcmp(romName, "G. BY T.A") != 0) {
for (byte i = 0; i < 28; i++) {
headerFZ[i] = char(readByte_SMS(0x7fe0 + i));
}
headerFZ[28] = '\0';
if (strcmp(headerFZ, "COPYRIGHT SEGAPRG. BY T.ASAI") == 0) {
strcpy(romName, "TMR SEGA");
cartSize = 128 * 1024UL;
}
}
display_Clear();
println_Msg(F("Cart Info"));
println_Msg(F(" "));
print_Msg(F("Name: "));
println_Msg(romName);
print_Msg(F("Size: "));
print_Msg(cartSize / 1024);
println_Msg(F("KB"));
println_Msg(F(" "));
if (strcmp(romName, "TMR SEGA") != 0) {
print_Error(F("Not working yet"), false);
sprintf(romName, "ERROR");
cartSize = 48 * 1024UL;
}
// Wait for user input
#if (defined(enable_LCD) || defined(enable_OLED))
println_Msg(F("Press Button..."));
display_Update();
wait();
#endif
// Turn off LED
setColor_RGB(0, 0, 0);
}
// Read rom and save to the SD card
void readROM_SMS() {
// Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName);
strcat(fileName, ".SMS");
// create a new folder
EEPROM_readAnything(0, foldern);
sprintf(folder, "SMS/ROM/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
display_Clear();
print_Msg(F("Saving to "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
// Open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_Error(F("SD Error"), true);
}
word bankSize = 16 * 1024UL;
for (byte currBank = 0x0; currBank < (cartSize / bankSize); currBank++) {
// Write current 16KB bank to slot 2 register 0xFFFF
writeByte_SMS(0xFFFF, currBank);
// Blink led
blinkLED();
// Read 16KB from slot 2 which starts at 0x8000
for (word currBuffer = 0; currBuffer < bankSize; currBuffer += 512) {
// Fill SD buffer
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_SMS(0x8000 + currBuffer + currByte);
}
// hexdump for debugging:
// if (currBank == 0 && currBuffer == 0) {
// for (word xi = 0; xi < 0x100; xi++) {
// if (xi%16==0) {
// print_Msg_PaddedHex16(xi);
// print_Msg(F(" "));
// }
// print_Msg_PaddedHexByte(sdBuffer[xi]);
// if (xi>0&&((xi+1)%16)==0) {
// println_Msg(F(""));
// } else {
// print_Msg(F(" "));
// }
// }
// }
myFile.write(sdBuffer, 512);
}
}
// Close the file:
myFile.close();
}
// Read SRAM and save to the SD card
void readSRAM_SMS() {
// Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName);
strcat(fileName, ".SAV");
// create a new folder
EEPROM_readAnything(0, foldern);
sprintf(folder, "SMS/SAVE/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
display_Clear();
print_Msg(F("Saving to "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
// Open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_Error(F("SD Error"), true);
}
// Write the whole 32KB
// When there is only 8KB of SRAM, the contents should be duplicated
word bankSize = 16 * 1024UL;
for (byte currBank = 0x0; currBank < 2; currBank++) {
writeByte_SMS(0xFFFC, 0x08 | (currBank << 2));
// Blink led
blinkLED();
// Read 16KB from slot 2 which starts at 0x8000
for (word currBuffer = 0; currBuffer < bankSize; currBuffer += 512) {
// Fill SD buffer
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_SMS(0x8000 + currBuffer + currByte);
}
myFile.write(sdBuffer, 512);
}
}
// Close the file:
myFile.close();
}
void writeSRAM_SMS() {
display_Clear();
if (false) {
print_Error(F("DISABLED"), false);
}
else {
fileBrowser(F("Select file"));
sd.chdir();
sprintf(filePath, "%s/%s", filePath, fileName);
display_Clear();
println_Msg(F("Restoring from "));
println_Msg(filePath);
println_Msg(fileName);
display_Update();
if (myFile.open(filePath, O_READ)) {
// Get SRAM size from file, with a maximum of 32KB
uint32_t sramSize = myFile.fileSize();
if (sramSize > ((uint32_t)32 * (uint32_t)1024)) {
sramSize = (uint32_t)32 * (uint32_t)1024;
}
print_Msg(F("sramSize: "));
print_Msg(sramSize);
println_Msg(F(""));
word bankSize = 16 * 1024;
for (word address = 0x0; address < sramSize; address += 512) {
byte currBank = address >= bankSize ? 1 : 0;
word page_address = address - (currBank * bankSize);
writeByte_SMS(0xFFFC, 0x08 | (currBank << 2));
// Blink led
blinkLED();
myFile.read(sdBuffer, 512);
for (int x = 0; x < 512; x++) {
writeByte_SMS(0x8000 + page_address + x, sdBuffer[x]);
}
}
myFile.close();
// Blink led
blinkLED();
println_Msg(F(""));
println_Msg(F("DONE"));
display_Update();
}
else {
print_Error(F("SD ERROR"), true);
}
}
display_Clear();
sd.chdir(); // root
filePath[0] = '\0'; // Reset filePath
}
#endif
//******************************************
// End of File
//******************************************
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