mirror of
https://github.com/sanni/cartreader.git
synced 2024-11-11 07:25:07 +01:00
NES.ino: Factorise code.
Mainly, this removes a lot of the logic from selectMapping by reusing the copy already present in getMapping. As a result, selectMapping is not expected to be accessed from outside this module anymore. Also, this factorises several smaller chunks of code found throughout the module. Also, get rid of a few easy globals along the way. Also, move a bit more of NES-specific initialisation and menu display to the NES.ino module. This saves about 1490 bytes of code.
This commit is contained in:
Vincent Pelletier
parent
e4e09c7bf8
commit
337ef94b07
@ -906,11 +906,6 @@ void mainMenu() {
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display_Clear();
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display_Update();
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setup_NES();
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#ifdef nointro
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if (getMapping() == 0) {
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selectMapping();
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}
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#endif
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checkStatus_NES();
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nesMenu();
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break;
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@ -1170,11 +1165,6 @@ void consoleMenu() {
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display_Clear();
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display_Update();
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setup_NES();
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#ifdef nointro
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if (getMapping() == 0) {
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selectMapping();
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}
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#endif
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checkStatus_NES();
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nesMenu();
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break;
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@ -161,7 +161,6 @@ static const byte PROGMEM mapsize[] = {
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*****************************************/
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// Mapper
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byte mapcount = (sizeof(mapsize) / sizeof(mapsize[0])) / 7;
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boolean mapfound = false;
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byte mapselect;
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int PRG[] = { 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 };
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@ -213,9 +212,6 @@ byte newchrsize;
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byte ramsize;
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byte newramsize;
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// Button
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int b = 0;
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/******************************************
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Menus
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*****************************************/
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@ -242,9 +238,11 @@ static const char* const menuOptionsNESChips[] PROGMEM = { nesChipsMenuItem1, ne
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// NES start menu
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void nesMenu() {
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unsigned char answer;
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// create menu with title "NES CART READER" and 7 options to choose from
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convertPgm(menuOptionsNES, 7);
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unsigned char answer = question_box(F("NES CART READER"), menuOptions, 7, 0);
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answer = question_box(F("NES CART READER"), menuOptions, 7, 0);
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// wait for user choice to come back from the question box menu
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switch (answer) {
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@ -308,11 +306,7 @@ void nesMenu() {
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// Change Mapper
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case 4:
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romName[0] = 'C';
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romName[1] = 'A';
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romName[2] = 'R';
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romName[3] = 'T';
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romName[4] = '\0';
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setDefaultRomName();
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setMapper();
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checkMapperSize();
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setPRGSize();
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@ -460,6 +454,15 @@ uint32_t uppow2(uint32_t n) {
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return n;
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}
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struct database_entry {
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char filename[128];
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char crc_str[8 + 1 + 8 + 1 + 32 + 1];
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uint32_t crc;
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char *crc512_str;
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uint32_t crc512;
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char *iNES_str;
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};
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void printPRG(unsigned long myOffset) {
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display_Clear();
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print_Msg(F("Printing PRG at "));
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@ -482,336 +485,245 @@ void printPRG(unsigned long myOffset) {
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display_Update();
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}
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boolean getMapping() {
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display_Clear();
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println_Msg(F("Searching database"));
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display_Update();
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void setDefaultRomName() {
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romName[0] = 'C';
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romName[1] = 'A';
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romName[2] = 'R';
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romName[3] = 'T';
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romName[4] = '\0';
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}
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// Read first 512 bytes of PRG ROM
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for (int x = 0; x < 512; x++) {
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sdBuffer[x] = read_prg_byte(0x8000 + x);
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void setRomnameFromString(const char *input) {
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byte myLength = 0;
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for (byte i = 0; i < 20 && myLength < 15; i++) {
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// Stop at first "(" to remove "(Country)"
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if (input[i] == '(') {
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break;
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}
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if (
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(input[i] >= '0' && input[i] <= '9') ||
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(input[i] >= 'A' && input[i] <= 'Z') ||
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(input[i] >= 'a' && input[i] <= 'z')
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) {
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romName[myLength++] = input[i];
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}
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}
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// Calculate CRC32
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// If name consists out of all japanese characters use CART as name
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if (myLength == 0) {
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setDefaultRomName();
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}
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}
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void getMapping() {
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FsFile database;
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uint32_t oldcrc32 = 0xFFFFFFFF;
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for (int c = 0; c < 512; c++) {
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oldcrc32 = updateCRC(sdBuffer[c], oldcrc32);
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}
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uint32_t oldcrc32MMC3 = 0xFFFFFFFF;
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char crcStr[9];
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char tempStr2[2];
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char iNES_STR[33];
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sprintf(crcStr, "%08lX", ~oldcrc32);
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//MMC3 maps the last 8KB block of PRG ROM to 0xE000 while 0x8000 can contain random data after bootup
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char crcStrMMC3[9];
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// Read first 512 bytes of last block of PRG ROM
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for (int x = 0; x < 512; x++) {
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sdBuffer[x] = read_prg_byte(0xE000 + x);
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display_Clear();
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sd.chdir();
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if (!database.open("nes.txt", O_READ)) {
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print_Error(F("Database file not found"), true);
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// never reached
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}
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// Calculate CRC32
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oldcrc32 = 0xFFFFFFFF;
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// Read first 512 bytes of first and last block of PRG ROM and compute CRC32
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// MMC3 maps the last 8KB block of PRG ROM to 0xE000 while 0x8000 can contain random data after bootup
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for (int c = 0; c < 512; c++) {
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oldcrc32 = updateCRC(sdBuffer[c], oldcrc32);
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oldcrc32 = updateCRC(read_prg_byte(0x8000 + c), oldcrc32);
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oldcrc32MMC3 = updateCRC(read_prg_byte(0xE000 + c), oldcrc32MMC3);
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}
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sprintf(crcStrMMC3, "%08lX", ~oldcrc32);
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print_Msg(F("for "));
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print_Msg(crcStr);
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if (strcmp(crcStrMMC3, crcStr) != 0) {
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print_Msg(F(" or "));
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print_Msg(crcStrMMC3);
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}
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println_Msg(F("..."));
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display_Update();
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oldcrc32 = ~oldcrc32;
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oldcrc32MMC3 = ~oldcrc32MMC3;
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// Filter out all 0xFF checksums at 0x8000 and 0xE000
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if ((strcmp(crcStr, "BD7BC39F") == 0) && (strcmp(crcStrMMC3, "BD7BC39F") == 0)) {
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if (oldcrc32 == 0xBD7BC39F && oldcrc32MMC3 == 0xBD7BC39F) {
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delay(200);
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println_Msg(F(""));
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println_Msg(F("No data found."));
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println_Msg(F("Using manual selection"));
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display_Update();
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delay(500);
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romName[0] = 'C';
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romName[1] = 'A';
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romName[2] = 'R';
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romName[3] = 'T';
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romName[4] = '\0';
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return 0;
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setDefaultRomName();
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selectMapping(database);
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} else {
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//Search for CRC32 in file
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char gamename[100];
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char crc_search[9];
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println_Msg(F("Searching database"));
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print_Msg(F("for "));
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sprintf(crcStr, "%08lX", oldcrc32);
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print_Msg(crcStr);
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if (oldcrc32 != oldcrc32MMC3) {
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char crcStrMMC3[9];
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print_Msg(F(" or "));
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sprintf(crcStrMMC3, "%08lX", oldcrc32MMC3);
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print_Msg(crcStrMMC3);
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}
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println_Msg(F("..."));
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display_Update();
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while (database.available()) {
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struct database_entry entry;
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//go to root
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sd.chdir();
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if (myFile.open("nes.txt", O_READ)) {
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//Search for same CRC in list
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while (myFile.available()) {
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// Read game name
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get_line(gamename, &myFile, 96);
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// Read CRC32 checksum
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sprintf(checksumStr, "%c", myFile.read());
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for (byte i = 0; i < 7; i++) {
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sprintf(tempStr2, "%c", myFile.read());
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strcat(checksumStr, tempStr2);
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}
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// Skip over semicolon
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myFile.seekCur(1);
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// Read CRC32 of first 512 bytes
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sprintf(crc_search, "%c", myFile.read());
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for (byte i = 0; i < 7; i++) {
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sprintf(tempStr2, "%c", myFile.read());
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strcat(crc_search, tempStr2);
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}
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// Skip over semicolon
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myFile.seekCur(1);
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// Read iNES header
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get_line(iNES_STR, &myFile, 33);
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//Skip every 3rd line
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skip_line(&myFile);
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//if checksum search was successful set mapper and end search, also filter out 0xFF checksum
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if (((strcmp(crc_search, crcStr) == 0) || (strcmp(crc_search, crcStrMMC3) == 0)) && (strcmp(crc_search, "BD7BC39F") != 0)) {
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// Rewind to start of entry
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rewind_line(myFile, 3);
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// Display database
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while (myFile.available()) {
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display_Clear();
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// Read game name
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get_line(gamename, &myFile, 96);
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// Read CRC32 checksum
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sprintf(checksumStr, "%c", myFile.read());
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for (byte i = 0; i < 7; i++) {
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sprintf(tempStr2, "%c", myFile.read());
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strcat(checksumStr, tempStr2);
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}
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// Skip over semicolon
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myFile.seekCur(1);
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// Read CRC32 of first 512 bytes
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sprintf(crc_search, "%c", myFile.read());
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for (byte i = 0; i < 7; i++) {
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sprintf(tempStr2, "%c", myFile.read());
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strcat(crc_search, tempStr2);
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}
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// Skip over semicolon
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myFile.seekCur(1);
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// Read iNES header
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get_line(iNES_STR, &myFile, 33);
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// Skip every 3rd line
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skip_line(&myFile);
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// Convert "4E4553" to (0x4E, 0x45, 0x53)
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unsigned int iNES_BUF;
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for (byte j = 0; j < 16; j++) {
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sscanf(iNES_STR + j * 2, "%2X", &iNES_BUF);
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iNES_HEADER[j] = iNES_BUF;
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}
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// Convert iNES garbage to useful info (thx to fceux)
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mapper = (iNES_HEADER[6] >> 4);
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mapper |= (iNES_HEADER[7] & 0xF0);
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mapper |= ((iNES_HEADER[8] & 0x0F) << 8);
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// PRG size
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if ((iNES_HEADER[9] & 0x0F) != 0x0F) {
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// simple notation
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prgsize = (iNES_HEADER[4] | ((iNES_HEADER[9] & 0x0F) << 8)); //*16
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} else {
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// exponent-multiplier notation
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prgsize = (((1 << (iNES_HEADER[4] >> 2)) * ((iNES_HEADER[4] & 0b11) * 2 + 1)) >> 14); //*16
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}
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if (prgsize != 0)
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prgsize = (int(log(prgsize) / log(2)));
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// CHR size
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if ((iNES_HEADER[9] & 0xF0) != 0xF0) {
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// simple notation
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chrsize = (uppow2(iNES_HEADER[5] | ((iNES_HEADER[9] & 0xF0) << 4))) * 2; //*4
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} else {
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chrsize = (((1 << (iNES_HEADER[5] >> 2)) * ((iNES_HEADER[5] & 0b11) * 2 + 1)) >> 13) * 2; //*4
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}
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if (chrsize != 0)
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chrsize = (int(log(chrsize) / log(2)));
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// RAM size
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ramsize = ((iNES_HEADER[10] & 0xF0) ? (64 << ((iNES_HEADER[10] & 0xF0) >> 4)) : 0) / 4096; //*4
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if (ramsize != 0)
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ramsize = (int(log(ramsize) / log(2)));
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prg = (int_pow(2, prgsize)) * 16;
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if (chrsize == 0)
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chr = 0; // 0K
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else
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chr = (int_pow(2, chrsize)) * 4;
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if (ramsize == 0)
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ram = 0; // 0K
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else if (mapper == 82)
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ram = 5; // 5K
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else
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ram = (int_pow(2, ramsize)) * 4;
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// Mapper Variants
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// Identify variant for use across multiple functions
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if (mapper == 4) { // Check for MMC6/MMC3
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checkMMC6();
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if (mmc6)
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ram = 1; // 1K
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}
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#ifdef global_log
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// Disable log to prevent unnecessary logging
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println_Log(F("Get Mapping from List"));
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dont_log = true;
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#endif
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println_Msg(gamename);
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print_Msg(F("MAPPER: "));
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println_Msg(mapper);
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print_Msg(F("PRG SIZE: "));
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print_Msg(prg);
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println_Msg(F("K"));
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print_Msg(F("CHR SIZE: "));
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print_Msg(chr);
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println_Msg(F("K"));
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print_Msg(F("RAM SIZE: "));
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if (mapper == 0) {
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print_Msg(ram / 4);
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println_Msg(F("K"));
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} else if ((mapper == 16) || (mapper == 80) || (mapper == 159)) {
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if (mapper == 16)
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print_Msg(ram * 32);
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else
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print_Msg(ram * 16);
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println_Msg(F("B"));
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} else if (mapper == 19) {
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if (ramsize == 2)
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println_Msg(F("128B"));
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else {
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print_Msg(ram);
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println_Msg(F("K"));
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}
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} else {
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print_Msg(ram);
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println_Msg(F("K"));
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}
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#if defined(enable_OLED)
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print_STR(press_to_change_STR, 1);
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print_STR(right_to_select_STR, 1);
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#elif defined(enable_LCD)
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print_STR(rotate_to_change_STR, 1);
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print_STR(press_to_select_STR, 1);
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#elif defined(SERIAL_MONITOR)
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println_Msg(F("U/D to Change"));
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println_Msg(F("Space to Select"));
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#endif
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display_Update();
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#ifdef global_log
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// Enable log again
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dont_log = false;
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#endif
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int b = 0;
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while (1) {
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// Check button input
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b = checkButton();
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// Next
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if (b == 1) {
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break;
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}
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// Previous
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else if (b == 2) {
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rewind_line(myFile, 6);
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break;
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}
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// Selection
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else if (b == 3) {
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// Get name
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byte myLength = 0;
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for (unsigned int i = 0; i < 20; i++) {
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// Stop at first "(" to remove "(Country)"
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if (char(gamename[i]) == 40) {
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break;
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}
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if (((char(gamename[i]) >= 48 && char(gamename[i]) <= 57) || (char(gamename[i]) >= 65 && char(gamename[i]) <= 90) || (char(gamename[i]) >= 97 && char(gamename[i]) <= 122)) && (myLength < 15)) {
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romName[myLength] = char(gamename[i]);
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myLength++;
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}
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}
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// If name consists out of all japanese characters use CART as name
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if (myLength == 0) {
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romName[0] = 'C';
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romName[1] = 'A';
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romName[2] = 'R';
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romName[3] = 'T';
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romName[4] = '\0';
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}
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// Save Mapper
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EEPROM_writeAnything(7, mapper);
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EEPROM_writeAnything(8, prgsize);
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EEPROM_writeAnything(9, chrsize);
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EEPROM_writeAnything(10, ramsize);
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myFile.close();
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return 1;
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break;
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}
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}
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}
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}
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readDatabaseEntry(database, &entry);
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//if checksum search was successful set mapper and end search, also filter out 0xFF checksum
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if (
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entry.crc512 != 0xBD7BC39F && (
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entry.crc512 == oldcrc32 || entry.crc512 == oldcrc32MMC3
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)
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) {
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// Rewind to start of entry
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rewind_line(database, 3);
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break;
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}
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}
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if (!database.available()) {
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// File searched until end but nothing found
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println_Msg(F(""));
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println_Msg(F("CRC not found in database"));
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println_Msg(F("Using manual selection"));
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display_Update();
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delay(1000);
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delay(500);
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// Print debug
|
||||
printPRG(0x8000);
|
||||
printPRG(0xE000);
|
||||
|
||||
// Change ROM name to CART
|
||||
romName[0] = 'C';
|
||||
romName[1] = 'A';
|
||||
romName[2] = 'R';
|
||||
romName[3] = 'T';
|
||||
romName[4] = '\0';
|
||||
return 0;
|
||||
} else {
|
||||
println_Msg(F("Database file not found"));
|
||||
return 0;
|
||||
setDefaultRomName();
|
||||
selectMapping(database);
|
||||
}
|
||||
}
|
||||
|
||||
// Display database
|
||||
while (database.available()) {
|
||||
byte iNES[16];
|
||||
byte *output;
|
||||
char *input;
|
||||
|
||||
struct database_entry entry;
|
||||
|
||||
display_Clear();
|
||||
readDatabaseEntry(database, &entry);
|
||||
|
||||
input = entry.iNES_str;
|
||||
output = iNES;
|
||||
for (byte i = 0; i < sizeof(iNES); i++) {
|
||||
unsigned int buf;
|
||||
|
||||
sscanf(input, "%2X", &buf);
|
||||
*(output++) = buf;
|
||||
input += 2;
|
||||
}
|
||||
|
||||
mapper = (iNES[6] >> 4) | (iNES[7] & 0xF0) | (iNES[8] & 0x0F);
|
||||
|
||||
if ((iNES[9] & 0x0F) != 0x0F) {
|
||||
// simple notation
|
||||
prgsize = (iNES[4] | ((iNES[9] & 0x0F) << 8)); //*16
|
||||
} else {
|
||||
// exponent-multiplier notation
|
||||
prgsize = (((1 << (iNES[4] >> 2)) * ((iNES[4] & 0b11) * 2 + 1)) >> 14); //*16
|
||||
}
|
||||
if (prgsize != 0)
|
||||
prgsize = (int(log(prgsize) / log(2)));
|
||||
|
||||
if ((iNES[9] & 0xF0) != 0xF0) {
|
||||
// simple notation
|
||||
chrsize = (uppow2(iNES[5] | ((iNES[9] & 0xF0) << 4))) * 2; //*4
|
||||
} else {
|
||||
// exponent-multiplier notation
|
||||
chrsize = (((1 << (iNES[5] >> 2)) * ((iNES[5] & 0b11) * 2 + 1)) >> 13) * 2; //*4
|
||||
}
|
||||
if (chrsize != 0)
|
||||
chrsize = (int(log(chrsize) / log(2)));
|
||||
|
||||
ramsize = ((iNES[10] & 0xF0) ? (64 << ((iNES[10] & 0xF0) >> 4)) : 0) / 4096; //*4
|
||||
if (ramsize != 0)
|
||||
ramsize = (int(log(ramsize) / log(2)));
|
||||
|
||||
prg = (int_pow(2, prgsize)) * 16;
|
||||
if (chrsize == 0)
|
||||
chr = 0; // 0K
|
||||
else
|
||||
chr = (int_pow(2, chrsize)) * 4;
|
||||
if (ramsize == 0)
|
||||
ram = 0; // 0K
|
||||
else if (mapper == 82)
|
||||
ram = 5; // 5K
|
||||
else
|
||||
ram = (int_pow(2, ramsize)) * 4;
|
||||
|
||||
// Mapper Variants
|
||||
// Identify variant for use across multiple functions
|
||||
if (mapper == 4) { // Check for MMC6/MMC3
|
||||
checkMMC6();
|
||||
if (mmc6)
|
||||
ram = 1; // 1K
|
||||
}
|
||||
|
||||
#ifdef global_log
|
||||
// Disable log to prevent unnecessary logging
|
||||
println_Log(F("Get Mapping from List"));
|
||||
dont_log = true;
|
||||
#endif
|
||||
println_Msg(entry.filename);
|
||||
printNESSettings();
|
||||
#if defined(enable_OLED)
|
||||
print_STR(press_to_change_STR, 1);
|
||||
print_STR(right_to_select_STR, 1);
|
||||
#elif defined(enable_LCD)
|
||||
print_STR(rotate_to_change_STR, 1);
|
||||
print_STR(press_to_select_STR, 1);
|
||||
#elif defined(SERIAL_MONITOR)
|
||||
println_Msg(F("U/D to Change"));
|
||||
println_Msg(F("Space to Select"));
|
||||
#endif
|
||||
display_Update();
|
||||
|
||||
#ifdef global_log
|
||||
// Enable log again
|
||||
dont_log = false;
|
||||
#endif
|
||||
int b = 0;
|
||||
do {
|
||||
b = checkButton();
|
||||
} while (b == 0);
|
||||
|
||||
if (b == 1)
|
||||
// 1: Next record
|
||||
continue;
|
||||
if (b == 2) {
|
||||
// 2: Previous record
|
||||
rewind_line(database, 6);
|
||||
continue;
|
||||
}
|
||||
// anything else: select current record
|
||||
setRomnameFromString(entry.filename);
|
||||
// Save Mapper
|
||||
EEPROM_writeAnything(7, mapper);
|
||||
EEPROM_writeAnything(8, prgsize);
|
||||
EEPROM_writeAnything(9, chrsize);
|
||||
EEPROM_writeAnything(10, ramsize);
|
||||
break;
|
||||
}
|
||||
database.close();
|
||||
}
|
||||
|
||||
void selectMapping() {
|
||||
char gamename[100];
|
||||
char tempStr2[2];
|
||||
char iNES_STR[33];
|
||||
char crc_search[9];
|
||||
static void readDatabaseEntry(FsFile &database, struct database_entry *entry) {
|
||||
get_line(entry->filename, &database, sizeof(entry->filename));
|
||||
get_line(entry->crc_str, &database, sizeof(entry->crc_str));
|
||||
skip_line(&database);
|
||||
|
||||
//go to root
|
||||
sd.chdir();
|
||||
entry->crc_str[8] = 0;
|
||||
entry->crc512_str = &entry->crc_str[8 + 1];
|
||||
entry->crc512_str[8] = 0;
|
||||
entry->iNES_str = &entry->crc_str[8 + 1 + 8 + 1];
|
||||
memcpy(iNES_HEADER, entry->iNES_str, sizeof(iNES_HEADER));
|
||||
|
||||
entry->crc = strtoul(entry->crc_str, NULL, 16);
|
||||
entry->crc512 = strtoul(entry->crc512_str, NULL, 16);
|
||||
}
|
||||
|
||||
static void selectMapping(FsFile &database) {
|
||||
// Select starting letter
|
||||
byte myLetter = starting_letter();
|
||||
|
||||
@ -823,224 +735,26 @@ void selectMapping() {
|
||||
setCHRSize();
|
||||
setRAMSize();
|
||||
} else {
|
||||
// Open database
|
||||
if (myFile.open("nes.txt", O_READ)) {
|
||||
|
||||
#ifdef global_log
|
||||
// Disable log to prevent unnecessary logging
|
||||
println_Log(F("Select Mapping from List"));
|
||||
dont_log = true;
|
||||
// Disable log to prevent unnecessary logging
|
||||
println_Log(F("Select Mapping from List"));
|
||||
dont_log = true;
|
||||
#endif
|
||||
|
||||
// Skip ahead to selected starting letter
|
||||
if ((myLetter > 0) && (myLetter <= 26)) {
|
||||
while (myFile.available()) {
|
||||
// Read current name
|
||||
get_line(gamename, &myFile, 96);
|
||||
|
||||
// Compare selected letter with first letter of current name until match
|
||||
while (gamename[0] != 64 + myLetter) {
|
||||
skip_line(&myFile);
|
||||
skip_line(&myFile);
|
||||
get_line(gamename, &myFile, 96);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
// Rewind one line
|
||||
rewind_line(myFile);
|
||||
}
|
||||
|
||||
// Display database
|
||||
while (myFile.available()) {
|
||||
display_Clear();
|
||||
|
||||
// Read game name
|
||||
get_line(gamename, &myFile, 96);
|
||||
|
||||
// Read CRC32 checksum
|
||||
sprintf(checksumStr, "%c", myFile.read());
|
||||
for (byte i = 0; i < 7; i++) {
|
||||
sprintf(tempStr2, "%c", myFile.read());
|
||||
strcat(checksumStr, tempStr2);
|
||||
}
|
||||
|
||||
// Skip over semicolon
|
||||
myFile.seekCur(1);
|
||||
|
||||
// Read CRC32 of first 512 bytes
|
||||
sprintf(crc_search, "%c", myFile.read());
|
||||
for (byte i = 0; i < 7; i++) {
|
||||
sprintf(tempStr2, "%c", myFile.read());
|
||||
strcat(crc_search, tempStr2);
|
||||
}
|
||||
|
||||
// Skip over semicolon
|
||||
myFile.seekCur(1);
|
||||
|
||||
// Read iNES header
|
||||
get_line(iNES_STR, &myFile, 33);
|
||||
|
||||
// Skip every 3rd line
|
||||
skip_line(&myFile);
|
||||
|
||||
// Convert "4E4553" to (0x4E, 0x45, 0x53)
|
||||
unsigned int iNES_BUF;
|
||||
for (byte j = 0; j < 16; j++) {
|
||||
sscanf(iNES_STR + j * 2, "%2X", &iNES_BUF);
|
||||
iNES_HEADER[j] = iNES_BUF;
|
||||
}
|
||||
|
||||
// Convert iNES garbage to useful info (thx to fceux)
|
||||
mapper = (iNES_HEADER[6] >> 4);
|
||||
mapper |= (iNES_HEADER[7] & 0xF0);
|
||||
mapper |= ((iNES_HEADER[8] & 0x0F) << 8);
|
||||
|
||||
// PRG size
|
||||
if ((iNES_HEADER[9] & 0x0F) != 0x0F) {
|
||||
// simple notation
|
||||
prgsize = (iNES_HEADER[4] | ((iNES_HEADER[9] & 0x0F) << 8)); //*16
|
||||
} else {
|
||||
// exponent-multiplier notation
|
||||
prgsize = (((1 << (iNES_HEADER[4] >> 2)) * ((iNES_HEADER[4] & 0b11) * 2 + 1)) >> 14); //*16
|
||||
}
|
||||
if (prgsize != 0)
|
||||
prgsize = (int(log(prgsize) / log(2)));
|
||||
|
||||
// CHR size
|
||||
if ((iNES_HEADER[9] & 0xF0) != 0xF0) {
|
||||
// simple notation
|
||||
chrsize = (uppow2(iNES_HEADER[5] | ((iNES_HEADER[9] & 0xF0) << 4))) * 2; //*4
|
||||
} else {
|
||||
chrsize = (((1 << (iNES_HEADER[5] >> 2)) * ((iNES_HEADER[5] & 0b11) * 2 + 1)) >> 13) * 2; //*4
|
||||
}
|
||||
if (chrsize != 0)
|
||||
chrsize = (int(log(chrsize) / log(2)));
|
||||
|
||||
// RAM size
|
||||
ramsize = ((iNES_HEADER[10] & 0xF0) ? (64 << ((iNES_HEADER[10] & 0xF0) >> 4)) : 0) / 4096; //*4
|
||||
if (ramsize != 0)
|
||||
ramsize = (int(log(ramsize) / log(2)));
|
||||
|
||||
prg = (int_pow(2, prgsize)) * 16;
|
||||
if (chrsize == 0)
|
||||
chr = 0; // 0K
|
||||
else
|
||||
chr = (int_pow(2, chrsize)) * 4;
|
||||
if (ramsize == 0)
|
||||
ram = 0; // 0K
|
||||
else if (mapper == 82)
|
||||
ram = 5; // 5K
|
||||
else
|
||||
ram = (int_pow(2, ramsize)) * 4;
|
||||
|
||||
// Mapper Variants
|
||||
// Identify variant for use across multiple functions
|
||||
if (mapper == 4) { // Check for MMC6/MMC3
|
||||
checkMMC6();
|
||||
if (mmc6)
|
||||
ram = 1; // 1K
|
||||
}
|
||||
|
||||
println_Msg(gamename);
|
||||
print_Msg(F("MAPPER: "));
|
||||
println_Msg(mapper);
|
||||
print_Msg(F("PRG SIZE: "));
|
||||
print_Msg(prg);
|
||||
println_Msg(F("K"));
|
||||
print_Msg(F("CHR SIZE: "));
|
||||
print_Msg(chr);
|
||||
println_Msg(F("K"));
|
||||
print_Msg(F("RAM SIZE: "));
|
||||
if (mapper == 0) {
|
||||
print_Msg(ram / 4);
|
||||
println_Msg(F("K"));
|
||||
} else if ((mapper == 16) || (mapper == 80) || (mapper == 159)) {
|
||||
if (mapper == 16)
|
||||
print_Msg(ram * 32);
|
||||
else
|
||||
print_Msg(ram * 16);
|
||||
println_Msg(F("B"));
|
||||
} else if (mapper == 19) {
|
||||
if (ramsize == 2)
|
||||
println_Msg(F("128B"));
|
||||
else {
|
||||
print_Msg(ram);
|
||||
println_Msg(F("K"));
|
||||
}
|
||||
} else {
|
||||
print_Msg(ram);
|
||||
println_Msg(F("K"));
|
||||
}
|
||||
#if defined(enable_OLED)
|
||||
print_STR(press_to_change_STR, 1);
|
||||
print_STR(right_to_select_STR, 1);
|
||||
#elif defined(enable_LCD)
|
||||
print_STR(rotate_to_change_STR, 1);
|
||||
print_STR(press_to_select_STR, 1);
|
||||
#elif defined(SERIAL_MONITOR)
|
||||
println_Msg(F("U/D to Change"));
|
||||
println_Msg(F("Space to Select"));
|
||||
#endif
|
||||
display_Update();
|
||||
|
||||
int b = 0;
|
||||
while (1) {
|
||||
// Check button input
|
||||
b = checkButton();
|
||||
|
||||
// Next
|
||||
if (b == 1) {
|
||||
break;
|
||||
}
|
||||
|
||||
// Previous
|
||||
else if (b == 2) {
|
||||
rewind_line(myFile, 6);
|
||||
break;
|
||||
}
|
||||
|
||||
// Selection
|
||||
else if (b == 3) {
|
||||
// Get name
|
||||
byte myLength = 0;
|
||||
for (unsigned int i = 0; i < 20; i++) {
|
||||
// Stop at first "(" to remove "(Country)"
|
||||
if (char(gamename[i]) == 40) {
|
||||
break;
|
||||
}
|
||||
if (((char(gamename[i]) >= 48 && char(gamename[i]) <= 57) || (char(gamename[i]) >= 65 && char(gamename[i]) <= 90) || (char(gamename[i]) >= 97 && char(gamename[i]) <= 122)) && (myLength < 15)) {
|
||||
romName[myLength] = char(gamename[i]);
|
||||
myLength++;
|
||||
}
|
||||
}
|
||||
|
||||
// If name consists out of all japanese characters use CART as name
|
||||
if (myLength == 0) {
|
||||
romName[0] = 'C';
|
||||
romName[1] = 'A';
|
||||
romName[2] = 'R';
|
||||
romName[3] = 'T';
|
||||
romName[4] = '\0';
|
||||
}
|
||||
|
||||
// Save Mapper
|
||||
EEPROM_writeAnything(7, mapper);
|
||||
EEPROM_writeAnything(8, prgsize);
|
||||
EEPROM_writeAnything(9, chrsize);
|
||||
EEPROM_writeAnything(10, ramsize);
|
||||
myFile.close();
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
#ifdef global_log
|
||||
// Enable log again
|
||||
dont_log = false;
|
||||
#endif
|
||||
} else {
|
||||
print_Error(F("Database file not found"), true);
|
||||
database.rewind();
|
||||
// Skip ahead to selected starting letter
|
||||
if ((myLetter > 0) && (myLetter <= 26)) {
|
||||
myLetter += 'A' - 1;
|
||||
struct database_entry entry;
|
||||
// Read current name
|
||||
do {
|
||||
readDatabaseEntry(database, &entry);
|
||||
} while (database.available() && entry.filename[0] != myLetter);
|
||||
rewind_line(database, 3);
|
||||
}
|
||||
#ifdef global_log
|
||||
// Enable log again
|
||||
dont_log = false;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
@ -2108,7 +1822,7 @@ chooseMapper:
|
||||
#elif defined(enable_serial)
|
||||
setmapper:
|
||||
String newmap;
|
||||
mapfound = false;
|
||||
boolean mapfound = false;
|
||||
Serial.println(F("SUPPORTED MAPPERS:"));
|
||||
for (int i = 0; i < mapcount; i++) {
|
||||
int index = i * 7;
|
||||
@ -2180,7 +1894,6 @@ void setPRGSize() {
|
||||
if (prglo == prghi)
|
||||
newprgsize = prglo;
|
||||
else {
|
||||
b = 0;
|
||||
int i = prglo;
|
||||
|
||||
display_Clear();
|
||||
@ -2197,7 +1910,7 @@ void setPRGSize() {
|
||||
display_Update();
|
||||
|
||||
while (1) {
|
||||
b = checkButton();
|
||||
int b = checkButton();
|
||||
|
||||
if (b == doubleclick) { // Previous
|
||||
if (i == prglo)
|
||||
@ -2300,7 +2013,6 @@ void setCHRSize() {
|
||||
if (chrlo == chrhi)
|
||||
newchrsize = chrlo;
|
||||
else {
|
||||
b = 0;
|
||||
int i = chrlo;
|
||||
|
||||
display_Clear();
|
||||
@ -2317,7 +2029,7 @@ void setCHRSize() {
|
||||
display_Update();
|
||||
|
||||
while (1) {
|
||||
b = checkButton();
|
||||
int b = checkButton();
|
||||
|
||||
if (b == doubleclick) { // Previous
|
||||
if (i == chrlo)
|
||||
@ -2421,7 +2133,6 @@ void setRAMSize() {
|
||||
if (ramlo == ramhi)
|
||||
newramsize = ramlo;
|
||||
else {
|
||||
b = 0;
|
||||
int i = 0;
|
||||
|
||||
display_Clear();
|
||||
@ -2452,7 +2163,7 @@ void setRAMSize() {
|
||||
display_Update();
|
||||
|
||||
while (1) {
|
||||
b = checkButton();
|
||||
int b = checkButton();
|
||||
|
||||
if (b == doubleclick) { // Previous Mapper
|
||||
if (i == 0)
|
||||
@ -2666,6 +2377,9 @@ void checkMMC6() { // Detect MMC6 Carts - read PRG 0x3E00A ("START
|
||||
}
|
||||
|
||||
void checkStatus_NES() {
|
||||
#ifdef nointro
|
||||
getMapping();
|
||||
#endif
|
||||
EEPROM_readAnything(7, mapper);
|
||||
EEPROM_readAnything(8, prgsize);
|
||||
EEPROM_readAnything(9, chrsize);
|
||||
@ -2696,6 +2410,15 @@ void checkStatus_NES() {
|
||||
println_Msg(F(""));
|
||||
println_Msg(F("CURRENT SETTINGS"));
|
||||
println_Msg(F(""));
|
||||
printNESSettings();
|
||||
println_Msg(F(""));
|
||||
// Prints string out of the common strings array either with or without newline
|
||||
print_STR(press_button_STR, 1);
|
||||
display_Update();
|
||||
wait();
|
||||
}
|
||||
|
||||
static void printNESSettings(void) {
|
||||
print_Msg(F("MAPPER: "));
|
||||
println_Msg(mapper);
|
||||
print_Msg(F("PRG SIZE: "));
|
||||
@ -2725,11 +2448,6 @@ void checkStatus_NES() {
|
||||
print_Msg(ram);
|
||||
println_Msg(F("K"));
|
||||
}
|
||||
println_Msg(F(""));
|
||||
// Prints string out of the common strings array either with or without newline
|
||||
print_STR(press_button_STR, 1);
|
||||
display_Update();
|
||||
wait();
|
||||
}
|
||||
|
||||
/******************************************
|
||||
|
||||
Loading…
Reference in New Issue
Block a user