mirror of
https://github.com/sanni/cartreader.git
synced 2024-11-10 23:15:08 +01:00
commit
4cc3092bbd
@ -825,6 +825,11 @@ void print_Msg_PaddedHexByte(byte message) {
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print_Msg(message, HEX);
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}
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void print_Msg_PaddedHex16(word message) {
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print_Msg_PaddedHexByte((message >> 8) & 0xFF);
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print_Msg_PaddedHexByte((message >> 0) & 0xFF);
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}
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void print_Msg_PaddedHex32(unsigned long message) {
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print_Msg_PaddedHexByte((message >> 24) & 0xFF);
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print_Msg_PaddedHexByte((message >> 16) & 0xFF);
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@ -85,6 +85,85 @@ unsigned long bramSize = 0;
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// REALTEC MAPPER
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boolean realtec = 0;
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#define DEFAULT_VALUE_segaSram16bit 0
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int segaSram16bit = DEFAULT_VALUE_segaSram16bit;
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/******************************************
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Configuration
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*****************************************/
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void mdLoadConf() {
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if (myFile.open("md.txt", O_READ)) {
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char line[64];
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int n;
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int i;
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while ((n = myFile.fgets(line, sizeof(line)-1)) > 0) {
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// preprocess
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for (i = 0; i < n; i++) {
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if (line[i] == ';') {
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// comments
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line[i] = '\0';
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n = i;
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break;
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} else if (line[i] == '\n' || line[i] == '\r') {
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// EOL
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line[n] = '\0';
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n = i;
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break;
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}
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}
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//print_Msg(F("read line: "));
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//println_Msg(line);
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if (line[0] == '[') {
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char *name;
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char *value;
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i = 1;
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name = line + i;
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for (; i < sizeof(line); i++) {
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if (line[i] == ']') {
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line[i] = '\0';
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i++;
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break;
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}
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}
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if (line[i] != '\0') {
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for (; i < sizeof(line); i++) {
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if (line[i] != ' ') {
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value = line + i;
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i++;
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break;
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}
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}
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for (; i < sizeof(line) && line[i] != '\0'; i++) {
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if (line[i] == ' ') {
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line[i] = '\0';
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break;
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}
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}
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}
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//print_Msg(F("read name: "));
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//println_Msg(name);
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//print_Msg(F("value: "));
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//println_Msg(value);
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if (!strcmp("segaSram16bit", name)) {
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// Retrode compatible setting
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// [segaSram16bit] 1 ; 0=no, 1=yes, 2=y+large
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// 0: Output each byte once. Not supported by most emulators.
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// 1: Duplicate each byte. Usable by Kega Fusion.
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// 2: Duplicate each byte. Pad with 0xFF so that the file size is 64KB.
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segaSram16bit = atoi(value);
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if (segaSram16bit != 0 && segaSram16bit != 1 && segaSram16bit != 2) {
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segaSram16bit = DEFAULT_VALUE_segaSram16bit;
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}
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print_Msg(F("segaSram16bit: "));
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println_Msg(segaSram16bit);
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}
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}
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}
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myFile.close();
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}
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}
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/******************************************
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Menu
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*****************************************/
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@ -221,7 +300,7 @@ void mdCartMenu() {
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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 ((saveType == 1) || (saveType == 2) || (saveType == 3) || (saveType == 5)) {
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if ((saveType == 1) || (saveType == 2) || (saveType == 3)) {
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// Change working dir to root
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sd.chdir("/");
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println_Msg(F("Reading Sram..."));
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@ -238,7 +317,7 @@ void mdCartMenu() {
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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 ((saveType == 1) || (saveType == 2) || (saveType == 3) || (saveType == 5)) {
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if ((saveType == 1) || (saveType == 2) || (saveType == 3)) {
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// Change working dir to root
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sd.chdir("/");
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// Launch file browser
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@ -358,6 +437,8 @@ void segaCDMenu() {
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Setup
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*****************************************/
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void setup_MD() {
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mdLoadConf();
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// Set Address Pins to Output
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//A0-A7
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DDRF = 0xFF;
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@ -597,7 +678,10 @@ void getCartInfo_MD() {
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// Get sram start and end
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sramBase = ((long(readWord_MD(0xDA)) << 16) | readWord_MD(0xDB));
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sramEnd = ((long(readWord_MD(0xDC)) << 16) | readWord_MD(0xDD));
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if (sramBase == 0x20000020 && sramEnd == 0x00010020) { // Fix for Psy-o-blade
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sramBase = 0x200001;
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sramEnd = 0x203fff;
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}
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// Check alignment of sram
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if ((sramBase == 0x200001) || (sramBase == 0x300001)) { // ADDED 0x300001 FOR HARDBALL '95 (U)
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// low byte
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@ -605,10 +689,6 @@ void getCartInfo_MD() {
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sramSize = (sramEnd - sramBase + 2) / 2;
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// Right shift sram base address so [A21] is set to high 0x200000 = 0b001[0]00000000000000000000
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sramBase = sramBase >> 1;
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if (chksum == 0x5D33 && sramEnd == 0x203FFF) { // Dragon Slayer Eiyuu Densetsu
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// the high byte read as zero
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saveType = 5; // BOTH
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}
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}
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else if (sramBase == 0x200000) {
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// high byte
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@ -617,8 +697,18 @@ void getCartInfo_MD() {
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// Right shift sram base address so [A21] is set to high 0x200000 = 0b001[0]00000000000000000000
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sramBase = sramBase / 2;
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}
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else
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else {
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print_Msg(("sramType: "));
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print_Msg_PaddedHex16(sramType);
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println_Msg(F(""));
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print_Msg(("sramBase: "));
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print_Msg_PaddedHex32(sramBase);
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println_Msg(F(""));
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print_Msg(("sramEnd: "));
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print_Msg_PaddedHex32(sramEnd);
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println_Msg(F(""));
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print_Error(F("Unknown Sram Base"), true);
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}
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}
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else if (sramType == 0xE020) { // SRAM BOTH BYTES
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// Get sram start and end
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@ -635,8 +725,18 @@ void getCartInfo_MD() {
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sramSize = sramEnd - sramBase + 1;
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sramBase = sramBase >> 1;
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}
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else
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else {
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print_Msg(("sramType: "));
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print_Msg_PaddedHex16(sramType);
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println_Msg(F(""));
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print_Msg(("sramBase: "));
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print_Msg_PaddedHex32(sramBase);
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println_Msg(F(""));
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print_Msg(("sramEnd: "));
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print_Msg_PaddedHex32(sramEnd);
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println_Msg(F(""));
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print_Error(F("Unknown Sram Base"), true);
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}
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}
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}
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else {
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@ -725,10 +825,11 @@ void getCartInfo_MD() {
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println_Msg(F(" "));
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print_Msg(F("Name: "));
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println_Msg(romName);
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print_Msg(F("bramCheck: "));
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print_Msg_PaddedHexByte(bramCheck >> 8);
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print_Msg_PaddedHexByte(bramCheck & 0x00ff);
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println_Msg(F(""));
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if (bramCheck != 0x00FF) {
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print_Msg(F("bramCheck: "));
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print_Msg_PaddedHex16(bramCheck);
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println_Msg(F(""));
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}
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if (bramSize > 0) {
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print_Msg(F("bramSize(KB): "));
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println_Msg(bramSize >> 10);
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@ -966,21 +1067,31 @@ void writeSram_MD() {
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// Write to the lower byte
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if (saveType == 1) {
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for (unsigned long currByte = sramBase; currByte < sramBase + sramSize; currByte++) {
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writeWord_MD(currByte, (myFile.read() & 0xFF));
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if (segaSram16bit > 0) {
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// skip high byte
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myFile.read();
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}
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word data = myFile.read() & 0xFF;
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writeWord_MD(currByte, data);
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}
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}
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// Write to the upper byte
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else if (saveType == 2) {
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for (unsigned long currByte = sramBase; currByte < sramBase + sramSize; currByte++) {
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writeWord_MD(currByte, ((myFile.read() << 8 ) & 0xFF));
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word data = (myFile.read() << 8) & 0xFF00;
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writeWord_MD(currByte, data);
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if (segaSram16bit > 0) {
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// skip low byte
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myFile.read();
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}
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}
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}
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// Write to both bytes
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else if (saveType == 5) {
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else if (saveType == 3) {
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for (unsigned long currByte = sramBase; currByte < sramBase + sramSize; currByte++) {
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word w0 = (myFile.read() & 0xFF); // skip
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word w1 = (myFile.read() & 0xFF);
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writeWord_MD(currByte, w1);
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word data = (myFile.read() << 8) & 0xFF00;
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data |= (myFile.read() & 0xFF);
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writeWord_MD(currByte, data);
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}
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}
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else
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@ -1026,26 +1137,43 @@ void readSram_MD() {
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if (saveType == 2) {
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// Only use the upper byte
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sdBuffer[currWord] = (( myWord >> 8 ) & 0xFF);
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if (segaSram16bit > 0) {
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sdBuffer[(currWord * 2) + 0] = (( myWord >> 8 ) & 0xFF);
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sdBuffer[(currWord * 2) + 1] = (( myWord >> 8 ) & 0xFF);
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} else {
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sdBuffer[currWord] = (( myWord >> 8 ) & 0xFF);
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}
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}
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else if (saveType == 1) {
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// Only use the lower byte
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sdBuffer[currWord] = (myWord & 0xFF);
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if (segaSram16bit > 0) {
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sdBuffer[(currWord * 2) + 0] = (myWord & 0xFF);
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sdBuffer[(currWord * 2) + 1] = (myWord & 0xFF);
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} else {
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sdBuffer[currWord] = (myWord & 0xFF);
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}
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}
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else if (saveType == 3) { // BOTH
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sdBuffer[currWord * 2] = (( myWord >> 8 ) & 0xFF);
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sdBuffer[(currWord * 2) + 1] = (myWord & 0xFF);
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}
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else if (saveType == 5) { // duplicate the lower byte
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sdBuffer[(currWord * 2) + 0] = (myWord & 0xFF);
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sdBuffer[(currWord * 2) + 1] = (myWord & 0xFF);
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}
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}
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if (saveType == 3 || saveType == 5)
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if (saveType == 3 || segaSram16bit > 0)
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myFile.write(sdBuffer, 512);
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else
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myFile.write(sdBuffer, 256);
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}
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if (segaSram16bit == 2) {
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// pad to 64KB
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for (int i = 0; i < 512; i++) {
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sdBuffer[i] = 0xFF;
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}
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unsigned long padsize = (1UL << 16) - (sramSize << 1);
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unsigned long padblockcount = padsize >> 9; // number of 512 byte blocks
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for (int i = 0; i < padblockcount; i++) {
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myFile.write(sdBuffer, 512);
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}
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}
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// Close the file:
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myFile.close();
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print_Msg(F("Saved to "));
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@ -1060,22 +1188,36 @@ unsigned long verifySram_MD() {
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// Open file on sd card
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if (myFile.open(filePath, O_READ)) {
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for (unsigned long currBuffer = sramBase; currBuffer < sramBase + sramSize; currBuffer += 512) {
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for (int currWord = 0; currWord < 512; currWord++) {
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for (unsigned long currBuffer = sramBase; currBuffer < sramBase + sramSize; currBuffer += 256) {
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for (int currWord = 0; currWord < 256; currWord++) {
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word myWord = readWord_MD(currBuffer + currWord);
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if (saveType == 2) {
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// Only use the upper byte
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sdBuffer[currWord] = (( myWord >> 8 ) & 0xFF);
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sdBuffer[currWord * 2] = (( myWord >> 8 ) & 0xFF);
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}
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else if (saveType == 1) {
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// Only use the lower byte
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sdBuffer[currWord] = (myWord & 0xFF);
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sdBuffer[currWord * 2] = (myWord & 0xFF);
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}
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else if (saveType == 3) { // BOTH
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sdBuffer[(currWord * 2) + 0] = (( myWord >> 8 ) & 0xFF);
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sdBuffer[(currWord * 2) + 1] = (myWord & 0xFF);
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}
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}
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int step = saveType == 3 ? 1 : 2;
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// Check sdBuffer content against file on sd card
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for (int i = 0; i < 512; i++) {
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if (myFile.read() != sdBuffer[i]) {
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for (int i = 0; i < 512; i += step) {
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if (saveType == 1 && segaSram16bit > 0) {
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// skip high byte
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myFile.read();
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}
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byte b = myFile.read();
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if (saveType == 2 && segaSram16bit > 0) {
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// skip low byte
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myFile.read();
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}
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if (b != sdBuffer[i]) {
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writeErrors++;
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}
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}
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