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https://github.com/sanni/cartreader.git
synced 2024-11-11 07:25:07 +01:00
V20 Changed N64 timing a bit
Hopefully I didn't break anything :x
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@ -2,15 +2,15 @@
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Cartridge Reader for Arduino Mega2560
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Author: sanni
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Date: 2017-01-12
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Version: V19L
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Date: 2017-01-29
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Version: V20
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SD lib: https://github.com/greiman/SdFat
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LCD lib: https://github.com/adafruit/Adafruit_SSD1306
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Clockgen: https://github.com/etherkit/Si5351Arduino
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RGB Tools lib: https://github.com/joushx/Arduino-RGB-Tools
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Compiled with Arduino 1.6.11
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Compiled with Arduino 1.8.0
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Thanks to:
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MichlK - ROM-Reader for Super Nintendo
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@ -34,7 +34,7 @@
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YamaArashi - GBA flashrom bank switch command
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**********************************************************************************/
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char ver[5] = "V19L";
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char ver[5] = "V20";
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/******************************************
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Define Output
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@ -104,8 +104,8 @@ void setup_GB() {
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// Set Data Pins (D0-D7) to Input
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DDRC = 0x00;
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// Enable Internal Pullups
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//PORTC = 0xFF;
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// Disable Internal Pullups
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PORTC = 0x00;
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// Print start page
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getCartInfo_GB();
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@ -244,6 +244,12 @@ void setup_GB() {
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/******************************************
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Low level functions
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*****************************************/
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// Switch data pins to read
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void dataIn_GB() {
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// Set to Input
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DDRC = 0x00;
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}
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byte readByte_GB(word myAddress) {
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PORTF = myAddress & 0xFF;
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PORTK = (myAddress >> 8) & 0xFF;
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@ -390,7 +396,7 @@ void readROM_GB() {
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dataOut();
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// Set ROM bank
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writeByte_GB(0x2100, y);
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dataIn();
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dataIn_GB();
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if (y > 1) {
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addr = 0x4000;
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}
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@ -525,7 +531,7 @@ void readSRAM_GB() {
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writeByte_GB(0x4000, bank);
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// Read RAM
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dataIn();
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dataIn_GB();
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for (addr = 0xA000; addr <= endaddr; addr = addr + 64) {
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uint8_t readData[64];
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for (int i = 0; i < 64; i++) {
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@ -537,7 +543,7 @@ void readSRAM_GB() {
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dataOut();
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// Disable RAM
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writeByte_GB(0x0000, 0x00);
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dataIn();
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dataIn_GB();
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}
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else {
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print_Error(F("Cart has no SRAM"), false);
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@ -616,7 +622,7 @@ void writeSRAM_GB() {
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print_Error(F("Cart has no SRAM"), false);
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}
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// Set pins to input
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dataIn();
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dataIn_GB();
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// Close the file:
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myFile.close();
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@ -665,7 +671,7 @@ unsigned long verifySRAM_GB() {
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writeByte_GB(0x4000, bank);
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// Read RAM
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dataIn();
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dataIn_GB();
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for (addr = 0xA000; addr <= endaddr; addr = addr + 64) {
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//fill sdBuffer
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myFile.read(sdBuffer, 64);
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@ -679,7 +685,7 @@ unsigned long verifySRAM_GB() {
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dataOut();
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// Disable RAM
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writeByte_GB(0x0000, 0x00);
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dataIn();
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dataIn_GB();
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}
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// Close the file:
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myFile.close();
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@ -716,7 +722,7 @@ void writeFlash_GB() {
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romType = myFile.read();
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romSize = myFile.read();
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// Go back to file beginning
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myFile.seekCur(0);
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myFile.seekSet(0);
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numBanks = 2; // Default 32K
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if (romSize == 1) {
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@ -759,8 +765,10 @@ void writeFlash_GB() {
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// Set data pins to output
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dataOut();
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// Set ROM bank 1
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writeByte_GB(0x2100, 1);
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// Set ROM bank hi 0
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writeByte_GB(0x3000, 0);
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// Set ROM bank low 0
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writeByte_GB(0x2000, 0);
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delay(100);
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// Reset flash
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@ -772,7 +780,7 @@ void writeFlash_GB() {
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writeByte_GB(0x2aa, 0x55);
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writeByte_GB(0x555, 0x90);
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dataIn();
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dataIn_GB();
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// Read the two id bytes into a string
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sprintf(flashid, "%02X%02X", readByte_GB(0), readByte_GB(1));
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@ -781,7 +789,7 @@ void writeFlash_GB() {
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println_Msg(F("MBM29F033C"));
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print_Msg(F("Banks: "));
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print_Msg(numBanks);
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println_Msg(F("/256"));
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println_Msg(F("/255"));
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display_Update();
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}
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else if (strcmp(flashid, "0141") == 0) {
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@ -821,7 +829,7 @@ void writeFlash_GB() {
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writeByte_GB(0x2aa, 0x55);
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writeByte_GB(0x555, 0x10);
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dataIn();
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dataIn_GB();
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// Read the status register
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byte statusReg = readByte_GB(0);
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@ -839,32 +847,25 @@ void writeFlash_GB() {
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println_Msg(F("Blankcheck"));
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display_Update();
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unsigned int addr = 0;
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// Read x number of banks
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for (int y = 1; y < numBanks; y++) {
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for (int currBank = 0; currBank < numBanks; currBank++) {
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// Blink led
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PORTB ^= (1 << 4);
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dataOut();
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// Set ROM bank
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writeByte_GB(0x2100, y);
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writeByte_GB(0x2000, currBank);
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dataIn();
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if (y > 1) {
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addr = 0x4000;
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}
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for (; addr <= 0x7FFF; addr += 512) {
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for (unsigned int currAddr = 0x4000; currAddr < 0x7FFF; currAddr += 512) {
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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(addr + i);
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for (int currByte = 0; currByte < 512; currByte++) {
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readData[currByte] = readByte_GB(currAddr + currByte);
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}
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for (int j = 0; j < 512; j++) {
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if (readData[j] != 0xFF) {
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println_Msg(F("Not empty"));
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display_Update();
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print_Error(F("Erase failed"), true);
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}
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}
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@ -875,42 +876,37 @@ void writeFlash_GB() {
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display_Update();
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// Write flash
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addr = 0;
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dataOut();
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for (int y = 1; y < numBanks; y++) {
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for (int currBank = 0; currBank < numBanks; currBank++) {
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// Blink led
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PORTB ^= (1 << 4);
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// Set ROM bank
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writeByte_GB(0x2100, y);
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writeByte_GB(0x2000, currBank);
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if (y > 1) {
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addr = 0x4000;
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}
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for (; addr <= 0x7FFF; addr += 512) {
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for (unsigned int currAddr = 0x4000; currAddr < 0x7FFF; currAddr += 512) {
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myFile.read(sdBuffer, 512);
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for (int c = 0; c < 512; c++) {
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for (int currByte = 0; currByte < 512; currByte++) {
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// Write command sequence
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writeByte_GB(0x555, 0xaa);
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writeByte_GB(0x2aa, 0x55);
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writeByte_GB(0x555, 0xa0);
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// Write current byte
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writeByte_GB(addr + c, sdBuffer[c]);
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writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
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// Set data pins to input
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dataIn();
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// Switch CS(PH3) and RD(PH6) to LOW
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// Setting CS(PH3) and OE/RD(PH6) LOW
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PORTH &= ~((1 << 3) | (1 << 6));
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Busycheck
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while ((PINC & 0x80) != (sdBuffer[c] & 0x80)) {
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// Busy check
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while ((PINC & 0x80) != (sdBuffer[currByte] & 0x80)) {
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}
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// Switch CS(PH3) and RD(PH6) to HIGH
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// Switch CS(PH3) and OE/RD(PH6) to HIGH
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PORTH |= (1 << 3) | (1 << 6);
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// Set data pins to output
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@ -918,14 +914,56 @@ void writeFlash_GB() {
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}
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}
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}
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// Set data pins to input again
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dataIn();
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// Set data pins to input again
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dataIn_GB();
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println_Msg(F("Verifying"));
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display_Update();
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// Go back to file beginning
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myFile.seekSet(0);
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unsigned int addr = 0;
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writeErrors = 0;
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// Verify flashrom
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for (int y = 1; y < numBanks; y++) {
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// Set ROM bank
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dataOut();
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writeByte_GB(0x2100, y);
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dataIn_GB();
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// Blink led
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PORTB ^= (1 << 4);
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if (y > 1) {
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addr = 0x4000;
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}
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for (; addr <= 0x7FFF; addr = addr + 512) {
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// Fill sdBuffer
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myFile.read(sdBuffer, 512);
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// Compare
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for (int i = 0; i < 512; i++) {
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if (readByte_GB(addr + i) != sdBuffer[i]) {
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writeErrors++;
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}
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}
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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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println_Msg(F("Done"));
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display_Update();
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if (writeErrors == 0) {
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println_Msg(F("OK"));
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display_Update();
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}
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else {
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print_Msg(F("Error: "));
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print_Msg(writeErrors);
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println_Msg(F(" bytes "));
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print_Error(F("did not verify."), false);
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}
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}
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else {
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println_Msg(F("Can't open file"));
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// Activate Internal Pullup Resistors
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//PORTH |= (1 << 4);
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// Wait until all is stable
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delay(500);
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// Print start page
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getCartInfo_N64();
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if (cartSize != 0) {
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@ -365,27 +368,33 @@ void setAddress_N64(unsigned long myAddress) {
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PORTF = myAdrHighOut & 0xFF;
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PORTK = (myAdrHighOut >> 8) & 0xFF;
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// Leave ale_H and ale_L high for ~120ns
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// Leave ale_H high for additional 120ns
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__asm__("nop\n\t""nop\n\t");
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// Pull ale_H(PC1) low
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PORTC &= ~(1 << 1);
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// Leave address pins stable for a little bit
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Output low part to address pins
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PORTF = myAdrLowOut & 0xFF;
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PORTK = (myAdrLowOut >> 8) & 0xFF;
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// Leave ale_L high for another ~110ns
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__asm__("nop\n\t""nop\n\t");
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// Leave ale_L high for ~180ns
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__asm__("nop\n\t""nop\n\t""nop\n\t");
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// Pull ale_L(PC0) low
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PORTC &= ~(1 << 0);
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// Wait ~1000ns before read
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Leave address pins stable for a little bit
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Set data pins to input
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adIn_N64();
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// Wait ~600ns just to be sure address is set
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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}
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// Read one word out of the cartridge
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@ -393,21 +402,15 @@ word readWord_N64() {
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// Pull read(PH6) low
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PORTH &= ~(1 << 6);
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// Wait ~100ns
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__asm__("nop\n\t""nop\n\t");
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// Wait ~300ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Join bytes from PINF and PINK into a word
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word tempWord = ( ( PINK & 0xFF ) << 8 ) | ( PINF & 0xFF );
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// Wait ~200ns
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__asm__("nop\n\t""nop\n\t""nop\n\t");
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// Pull read(PH6) high
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PORTH |= (1 << 6);
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// Wait ~60ns
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__asm__("nop\n\t");
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return tempWord;
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}
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