mirror of
https://github.com/sanni/cartreader.git
synced 2024-11-23 21:19:16 +01:00
Reduce ram usage by a small amount
This commit is contained in:
sanni
parent
bb4ae30151
commit
7b92953e0b
@ -4,8 +4,8 @@
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This project represents a community-driven effort to provide
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an easy to build and easy to modify cartridge dumper.
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Date: 08.02.2022
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Version: 7.5
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Date: 15.02.2022
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Version: 7.6
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SD lib: https://github.com/greiman/SdFat
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OLED lib: https://github.com/adafruit/Adafruit_SSD1306
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@ -45,7 +45,7 @@
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**********************************************************************************/
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char ver[5] = "7.5";
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char ver[5] = "7.6";
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/******************************************
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Libraries
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@ -11,7 +11,7 @@
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// Game Boy
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int sramBanks;
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int romBanks;
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uint16_t sramEndAddress = 0;
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word lastByte = 0;
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/******************************************
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Menu
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@ -127,7 +127,7 @@ void gbxMenu() {
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}
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getCartInfo_GB();
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// Does cartridge have SRAM
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if (sramEndAddress > 0) {
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if (lastByte > 0) {
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// Remove file name ending
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int pos = -1;
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while (fileName[++pos] != '\0') {
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@ -259,7 +259,7 @@ void gbMenu() {
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case 1:
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display_Clear();
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// Does cartridge have SRAM
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if (sramEndAddress > 0) {
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if (lastByte > 0) {
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// Change working dir to root
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sd.chdir("/");
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readSRAM_GB();
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@ -272,7 +272,7 @@ void gbMenu() {
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case 2:
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display_Clear();
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// Does cartridge have SRAM
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if (sramEndAddress > 0) {
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if (lastByte > 0) {
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// Change working dir to root
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sd.chdir("/");
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filePath[0] = '\0';
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@ -339,52 +339,60 @@ void showCartInfo_GB() {
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println_Msg(F("GB Cart Info"));
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print_Msg(F("Name: "));
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println_Msg(romName);
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print_Msg(F("Rom Type: "));
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switch (romType) {
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case 0: print_Msg(F("ROM ONLY")); break;
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case 1: print_Msg(F("MBC1")); break;
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case 2: print_Msg(F("MBC1+RAM")); break;
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case 3: print_Msg(F("MBC1+RAM")); break;
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case 5: print_Msg(F("MBC2")); break;
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case 6: print_Msg(F("MBC2")); break;
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case 8: print_Msg(F("ROM+RAM")); break;
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case 9: print_Msg(F("ROM ONLY")); break;
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case 11: print_Msg(F("MMM01")); break;
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case 12: print_Msg(F("MMM01+RAM")); break;
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case 13: print_Msg(F("MMM01+RAM")); break;
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case 15: print_Msg(F("MBC3+TIMER")); break;
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case 16: print_Msg(F("MBC3+TIMER+RAM")); break;
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case 17: print_Msg(F("MBC3")); break;
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case 18: print_Msg(F("MBC3+RAM")); break;
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case 19: print_Msg(F("MBC3+RAM")); break;
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case 21: print_Msg(F("MBC4")); break;
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case 22: print_Msg(F("MBC4+RAM")); break;
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case 23: print_Msg(F("MBC4+RAM")); break;
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case 25: print_Msg(F("MBC5")); break;
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case 26: print_Msg(F("MBC5+RAM")); break;
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case 27: print_Msg(F("MBC5+RAM")); break;
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case 28: print_Msg(F("MBC5+RUMBLE")); break;
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case 29: print_Msg(F("MBC5+RUMBLE+RAM")); break;
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case 30: print_Msg(F("MBC5+RUMBLE+RAM")); break;
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case 252: print_Msg(F("Gameboy Camera")); break;
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default: print_Msg(F("Not found"));
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}
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print_Msg(F("Mapper: "));
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if ((romType == 0) || (romType == 8) || (romType == 9))
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print_Msg(F("none"));
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else if ((romType == 1) || (romType == 2) || (romType == 3))
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print_Msg(F("MBC1"));
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else if ((romType == 5) || (romType == 6))
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print_Msg(F("MBC2"));
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else if ((romType == 11) || (romType == 12) || (romType == 13))
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print_Msg(F("MMM01"));
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else if ((romType == 15) || (romType == 16) || (romType == 17) || (romType == 18) || (romType == 19))
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print_Msg(F("MBC3"));
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else if ((romType == 21) || (romType == 22) || (romType == 23))
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print_Msg(F("MBC4"));
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else if ((romType == 25) || (romType == 26) || (romType == 27) || (romType == 28) || (romType == 29) || (romType == 309))
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print_Msg(F("MBC5"));
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if (romType == 252)
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print_Msg(F("Camera"));
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println_Msg(F(" "));
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print_Msg(F("Rom Size: "));
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switch (romSize) {
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case 0: print_Msg(F("32KB")); break;
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case 1: print_Msg(F("64KB")); break;
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case 2: print_Msg(F("128KB")); break;
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case 3: print_Msg(F("256KB")); break;
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case 4: print_Msg(F("512KB")); break;
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case 5: print_Msg(F("1MB")); break;
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case 6: print_Msg(F("2MB")); break;
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case 7: print_Msg(F("4MB")); break;
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case 82: print_Msg(F("1.1MB")); break;
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case 83: print_Msg(F("1.2MB")); break;
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case 84: print_Msg(F("1.5MB)")); break;
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default: print_Msg(F("Not found"));
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case 0:
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print_Msg(F("32KB"));
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break;
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case 1:
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print_Msg(F("64KB"));
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break;
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case 2:
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print_Msg(F("128KB"));
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break;
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case 3:
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print_Msg(F("256KB"));
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break;
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case 4:
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print_Msg(F("512KB"));
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break;
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case 5: print_Msg(F("1MB"));
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break;
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case 6:
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print_Msg(F("2MB"));
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break;
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case 7:
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print_Msg(F("4MB"));
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break;
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}
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println_Msg(F(""));
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print_Msg(F("Banks: "));
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println_Msg(romBanks);
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@ -396,14 +404,27 @@ void showCartInfo_GB() {
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print_Msg(F("512B"));
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}
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else {
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print_Msg(F("None"));
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print_Msg(F("none"));
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}
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break;
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case 1: print_Msg(F("2KB")); break;
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case 2: print_Msg(F("8KB")); break;
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case 3: print_Msg(F("32KB")); break;
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case 4: print_Msg(F("128KB")); break;
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default: print_Msg(F("Not found"));
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case 1:
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print_Msg(F("2KB"));
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break;
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case 2:
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print_Msg(F("8KB"));
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break;
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case 3:
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print_Msg(F("32KB"));
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break;
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case 4:
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print_Msg
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(F("128KB"));
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break;
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default: print_Msg(F("none"));
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}
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println_Msg(F(""));
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print_Msg(F("Checksum: "));
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@ -533,16 +554,43 @@ void getCartInfo_GB() {
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sramSize = readByte_GB(0x0149);
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// ROM banks
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romBanks = 2; // Default 32K
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if (romSize >= 1) { // Calculate rom size
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romBanks = 2 << romSize;
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switch (romSize)
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{
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case 0x00:
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romBanks = 2;
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break;
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case 0x01:
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romBanks = 4;
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break;
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case 0x02:
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romBanks = 8;
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break;
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case 0x03:
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romBanks = 16;
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break;
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case 0x04:
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romBanks = 32;
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break;
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case 0x05:
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romBanks = 64;
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break;
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case 0x06:
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romBanks = 128;
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break;
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case 0x07:
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romBanks = 256;
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break;
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default:
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romBanks = 2;
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}
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// RAM banks
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sramBanks = 0; // Default 0K RAM
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// SRAM banks
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sramBanks = 0;
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if (romType == 6) {
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sramBanks = 1;
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}
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// SRAM size
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switch (sramSize) {
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case 2:
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sramBanks = 1;
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@ -558,15 +606,15 @@ void getCartInfo_GB() {
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break;
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}
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// RAM end address
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// Last byte of SRAM
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if (romType == 6) {
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sramEndAddress = 0xA1FF; // MBC2 512bytes (nibbles)
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lastByte = 0xA1FF;
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}
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if (sramSize == 1) {
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sramEndAddress = 0xA7FF; // 2K RAM
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lastByte = 0xA7FF;
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}
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if (sramSize > 1) {
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sramEndAddress = 0xBFFF; // 8K RAM
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else if (sramSize > 1) {
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lastByte = 0xBFFF;
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}
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// Get Checksum as string
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@ -588,7 +636,7 @@ void getCartInfo_GB() {
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/******************************************
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ROM functions
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*****************************************/
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// Dump ROM
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// Read ROM
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void readROM_GB() {
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// Get name, add extension and convert to char array for sd lib
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strcpy(fileName, romName);
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@ -615,36 +663,37 @@ void readROM_GB() {
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print_Error(F("Can't create file on SD"), true);
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}
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uint16_t romAddress = 0;
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word romAddress = 0;
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// Read number of banks and switch banks
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for (uint16_t bank = 1; bank < romBanks; bank++) {
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for (word currBank = 1; currBank < romBanks; currBank++) {
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// Switch data pins to output
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dataOut();
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if (romType >= 5) { // MBC2 and above
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writeByte_GB(0x2100, bank); // Set ROM bank
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// Set ROM bank for MBC2/3/4/5
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if (romType >= 5) {
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writeByte_GB(0x2100, currBank);
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}
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else { // MBC1
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writeByte_GB(0x6000, 0); // Set ROM Mode
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writeByte_GB(0x4000, bank >> 5); // Set bits 5 & 6 (01100000) of ROM bank
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writeByte_GB(0x2000, bank & 0x1F); // Set bits 0 & 4 (00011111) of ROM bank
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// Set ROM bank for MBC1
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else {
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writeByte_GB(0x6000, 0);
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writeByte_GB(0x4000, currBank >> 5);
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writeByte_GB(0x2000, currBank & 0x1F);
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}
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// Switch data pins to intput
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dataIn_GB();
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if (bank > 1) {
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// Second bank starts at 0x4000
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if (currBank > 1) {
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romAddress = 0x4000;
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}
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// Read up to 7FFF per bank
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// Read banks and save to SD
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while (romAddress <= 0x7FFF) {
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uint8_t readData[512];
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for (int i = 0; i < 512; i++) {
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readData[i] = readByte_GB(romAddress + i);
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sdBuffer[i] = readByte_GB(romAddress + i);
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}
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myFile.write(readData, 512);
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myFile.write(sdBuffer, 512);
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romAddress += 512;
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}
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}
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@ -653,6 +702,7 @@ void readROM_GB() {
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myFile.close();
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}
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// Calculate checksum
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unsigned int calc_checksum_GB (char* fileName, char* folder) {
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unsigned int calcChecksum = 0;
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// int calcFilesize = 0; // unused
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@ -687,6 +737,7 @@ unsigned int calc_checksum_GB (char* fileName, char* folder) {
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}
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}
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// Compare checksum
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boolean compare_checksum_GB() {
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println_Msg(F("Calculating Checksum"));
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@ -723,7 +774,7 @@ boolean compare_checksum_GB() {
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// Read RAM
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void readSRAM_GB() {
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// Does cartridge have RAM
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if (sramEndAddress > 0) {
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if (lastByte > 0) {
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// Get name, add extension and convert to char array for sd lib
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strcpy(fileName, romName);
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@ -746,12 +797,12 @@ void readSRAM_GB() {
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dataIn_GB();
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// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
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// MBC2 Fix
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readByte_GB(0x0134);
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dataOut();
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if (romType <= 4) { // MBC1
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writeByte_GB(0x6000, 1); // Set RAM Mode
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if (romType <= 4) {
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writeByte_GB(0x6000, 1);
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}
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// Initialise MBC
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@ -764,12 +815,11 @@ void readSRAM_GB() {
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// Read SRAM
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dataIn_GB();
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for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress += 64) {
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uint8_t readData[64];
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for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
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for (uint8_t i = 0; i < 64; i++) {
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readData[i] = readByteSRAM_GB(sramAddress + i);
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sdBuffer[i] = readByteSRAM_GB(sramAddress + i);
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}
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myFile.write(readData, 64);
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myFile.write(sdBuffer, 64);
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}
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}
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@ -795,7 +845,7 @@ void readSRAM_GB() {
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// Write RAM
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void writeSRAM_GB() {
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// Does cartridge have SRAM
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if (sramEndAddress > 0) {
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if (lastByte > 0) {
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// Create filepath
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sprintf(filePath, "%s/%s", filePath, fileName);
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@ -804,28 +854,29 @@ void writeSRAM_GB() {
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// Set pins to input
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dataIn_GB();
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// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
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// MBC2 Fix
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readByte_GB(0x0134);
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dataOut();
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if (romType <= 4) { // MBC1
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writeByte_GB(0x6000, 1); // Set RAM Mode
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// Enable SRAM for MBC1
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if (romType <= 4) {
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writeByte_GB(0x6000, 1);
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}
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// Initialise MBC
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writeByte_GB(0x0000, 0x0A);
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// Switch RAM banks
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for (uint8_t bank = 0; bank < sramBanks; bank++) {
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writeByte_GB(0x4000, bank);
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for (byte currBank = 0; currBank < sramBanks; currBank++) {
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writeByte_GB(0x4000, currBank);
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// Write RAM
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for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress++) {
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for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress++) {
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writeByteSRAM_GB(sramAddress, myFile.read());
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}
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}
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// Disable RAM
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// Disable SRAM
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writeByte_GB(0x0000, 0x00);
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// Set pins to input
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@ -858,11 +909,11 @@ unsigned long verifySRAM_GB() {
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dataIn_GB();
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// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
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// MBC2 Fix
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readByte_GB(0x0134);
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// Does cartridge have RAM
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if (sramEndAddress > 0) {
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// Check SRAM size
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if (lastByte > 0) {
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dataOut();
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if (romType <= 4) { // MBC1
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writeByte_GB(0x6000, 1); // Set RAM Mode
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@ -878,7 +929,7 @@ unsigned long verifySRAM_GB() {
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// Read SRAM
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dataIn_GB();
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for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress += 64) {
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for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
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//fill sdBuffer
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myFile.read(sdBuffer, 64);
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for (int c = 0; c < 64; c++) {
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@ -1064,8 +1115,8 @@ void writeFlash29F_GB(byte MBC) {
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// Write flash
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dataOut();
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uint16_t currAddr = 0;
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uint16_t endAddr = 0x3FFF;
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word currAddr = 0;
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word endAddr = 0x3FFF;
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for (int currBank = 0; currBank < romBanks; currBank++) {
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// Blink led
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@ -1170,10 +1221,10 @@ void writeFlash29F_GB(byte MBC) {
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writeErrors = 0;
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// Verify flashrom
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uint16_t romAddress = 0;
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word romAddress = 0;
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// Read number of banks and switch banks
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for (uint16_t bank = 1; bank < romBanks; bank++) {
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for (word bank = 1; bank < romBanks; bank++) {
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// Switch data pins to output
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dataOut();
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@ -1464,8 +1515,8 @@ bool writeCFI_GB() {
|
||||
// Write flash
|
||||
dataOut();
|
||||
|
||||
uint16_t currAddr = 0;
|
||||
uint16_t endAddr = 0x3FFF;
|
||||
word currAddr = 0;
|
||||
word endAddr = 0x3FFF;
|
||||
|
||||
for (int currBank = 0; currBank < romBanks; currBank++) {
|
||||
// Blink led
|
||||
@ -1539,10 +1590,10 @@ bool writeCFI_GB() {
|
||||
writeErrors = 0;
|
||||
|
||||
// Verify flashrom
|
||||
uint16_t romAddress = 0;
|
||||
word romAddress = 0;
|
||||
|
||||
// Read number of banks and switch banks
|
||||
for (uint16_t bank = 1; bank < romBanks; bank++) {
|
||||
for (word bank = 1; bank < romBanks; bank++) {
|
||||
// Switch data pins to output
|
||||
dataOut();
|
||||
|
||||
|
||||
@ -366,13 +366,13 @@ void getCartInfo_SMS() {
|
||||
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(" "));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user