mirror of
https://github.com/sanni/cartreader.git
synced 2024-11-11 07:25:07 +01:00
457 lines
12 KiB
C++
457 lines
12 KiB
C++
//******************************************
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// SNES Satellaview 8M Memory pack code by tamanegi_taro
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// Revision 1.0.0 October 22nd 2018
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//******************************************
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/******************************************
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Satellaview 8M Memory Pack
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******************************************/
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/******************************************
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Prototype Declarations
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*****************************************/
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/* Hoping that sanni will use this progressbar function */
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extern void draw_progressbar(uint32_t processedsize, uint32_t totalsize);
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//void svMenu();
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void readROM_SV();
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//void setup_SV();
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void writeROM_SV (void);
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void eraseCheck_SV(void);
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void supplyCheck_SV(void);
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void writeCheck_SV(void);
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void detectCheck_SV(void);
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void eraseAll_SV(void);
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/******************************************
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Variables
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*****************************************/
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//No global variables
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/******************************************
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Menu
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*****************************************/
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// SV flash menu items
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static const char svFlashMenuItem1[] PROGMEM = "Read Memory Pack";
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static const char svFlashMenuItem2[] PROGMEM = "Write Memory Pack";
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static const char svFlashMenuItem3[] PROGMEM = "Back";
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static const char* const menuOptionsSVFlash[] PROGMEM = {svFlashMenuItem1, svFlashMenuItem2, svFlashMenuItem3};
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void svMenu() {
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// create menu with title and 3 options to choose from
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unsigned char mainMenu;
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// Copy menuOptions out of progmem
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convertPgm(menuOptionsSVFlash, 3);
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mainMenu = question_box(F("Satellaview 8M Memory"), menuOptions, 3, 0);
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// wait for user choice to come back from the question box menu
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switch (mainMenu)
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{
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// Read memory pack
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case 0:
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readROM_SV();
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break;
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// Write memory pack
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case 1:
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writeROM_SV();
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break;
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// Reset
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case 2:
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resetArduino();
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break;
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}
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}
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// Read memory pack to SD card
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void readROM_SV() {
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// Set control
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dataIn();
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controlIn_SNES();
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// Get name, add extension and convert to char array for sd lib
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strcpy(fileName, "MEMPACK.sfc");
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// create a new folder for the save file
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EEPROM_readAnything(10, foldern);
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sprintf(folder, "SNES/ROM/%s/%d", "MEMPACK", foldern);
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sd.mkdir(folder, true);
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sd.chdir(folder);
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//clear the screen
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display_Clear();
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print_Msg(F("Saving to "));
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print_Msg(folder);
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println_Msg(F("/..."));
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display_Update();
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// write new folder number back to eeprom
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foldern = foldern + 1;
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EEPROM_writeAnything(10, foldern);
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//open file on sd card
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if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
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print_Error(F("Can't create file on SD"), true);
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}
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// Read Banks
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for (int currBank = 0x40; currBank < 0x50; currBank++) {
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// Dump the bytes to SD 512B at a time
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for (long currByte = 0; currByte < 65536; currByte += 512) {
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draw_progressbar((currBank - 0x40) * 0x10000 + currByte, 0x100000);
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for (int c = 0; c < 512; c++) {
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sdBuffer[c] = readBank_SNES(currBank, currByte + c);
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}
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myFile.write(sdBuffer, 512);
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}
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}
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draw_progressbar(0x100000, 0x100000); //Finish drawing progress bar
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// Close the file:
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myFile.close();
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println_Msg(F("Read pack completed"));
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display_Update();
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wait();
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}
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/******************************************
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Setup
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*****************************************/
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void setup_SV() {
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// Set cicrstPin(PG1) to Output
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DDRG |= (1 << 1);
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// Output a high signal until we're ready to start
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PORTG |= (1 << 1);
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// Set cichstPin(PG0) to Input
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DDRG &= ~(1 << 0);
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// Adafruit Clock Generator
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clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
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clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLB);
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clockgen.set_freq(2147727200ULL, SI5351_CLK0);
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clockgen.set_freq(307200000ULL, SI5351_CLK2);
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clockgen.output_enable(SI5351_CLK0, 1);
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clockgen.output_enable(SI5351_CLK1, 0);
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clockgen.output_enable(SI5351_CLK2, 1);
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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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//A8-A15
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DDRK = 0xFF;
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//BA0-BA7
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DDRL = 0xFF;
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//PA0-PA7
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DDRA = 0xFF;
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// Set Control Pins to Output RST(PH0) CS(PH3) WR(PH5) RD(PH6)
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DDRH |= (1 << 0) | (1 << 3) | (1 << 5) | (1 << 6);
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// Switch RST(PH0) and WR(PH5) to HIGH
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PORTH |= (1 << 0) | (1 << 5);
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// Switch CS(PH3) and RD(PH6) to LOW
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PORTH &= ~((1 << 3) | (1 << 6));
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// Set Refresh(PE5) to Output
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DDRE |= (1 << 5);
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// Switch Refresh(PE5) to LOW (needed for SA-1)
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PORTE &= ~(1 << 5);
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// Set CPU Clock(PH1) to Output
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DDRH |= (1 << 1);
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//PORTH &= ~(1 << 1);
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// Set IRQ(PH4) to Input
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DDRH &= ~(1 << 4);
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// Activate Internal Pullup Resistors
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//PORTH |= (1 << 4);
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// Set expand(PG5) to output
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DDRG |= (1 << 5);
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// Output High
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PORTG |= (1 << 5);
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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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// Unused pins
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// Set wram(PE4) to Output
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DDRE |= (1 << 4);
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//PORTE &= ~(1 << 4);
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// Set pawr(PJ1) to Output
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DDRJ |= (1 << 1);
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//PORTJ &= ~(1 << 1);
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// Set pard(PJ0) to Output
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DDRJ |= (1 << 0);
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//PORTJ &= ~(1 << 0);
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// Start CIC by outputting a low signal to cicrstPin(PG1)
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PORTG &= ~(1 << 1);
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// Wait for CIC reset
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delay(1000);
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}
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void writeROM_SV (void) {
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// Get Checksum as string to make sure that BS-X cart is inserted
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dataIn();
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controlIn_SNES();
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sprintf(checksumStr, "%02X%02X", readBank_SNES(0, 65503), readBank_SNES(0, 65502));
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//if CRC is not 8B86, BS-X cart is not inserted. Display error and reset
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if (strcmp("8B86", checksumStr) != 0)
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{
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display_Clear();
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print_Error(F("Error: Must use BS-X cart"), true);
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}
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//Display file Browser and wait user to select a file. Size must be 1MB.
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filePath[0] = '\0';
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sd.chdir("/");
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fileBrowser(F("Select sfc file"));
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// Create filepath
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sprintf(filePath, "%s/%s", filePath, fileName);
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display_Clear();
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//open file on sd card
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if (myFile.open(filePath, O_READ)) {
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fileSize = myFile.fileSize();
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if (fileSize != 0x100000) {
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println_Msg(F("File must be 1MB"));
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display_Update();
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myFile.close();
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wait();
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return;
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}
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//Disable 8M memory pack write protection
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dataOut();
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controlOut_SNES();
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writeBank_SNES(0x0C, 0x5000, 0x80); //Modify write enable register
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writeBank_SNES(0x0E, 0x5000, 0x80); //Commit register modification
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//Erase memory pack
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println_Msg(F("Erasing pack..."));
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display_Update();
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eraseAll_SV();
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//Blank check
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//Set pins to input
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dataIn();
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controlIn_SNES();
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println_Msg(F("Blank check..."));
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display_Update();
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for (int currBank = 0xC0; currBank < 0xD0; currBank++) {
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draw_progressbar(((currBank - 0xC0) * 0x10000), 0x100000);
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for (long currByte = 0; currByte < 65536; currByte++) {
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if (0xFF != readBank_SNES(currBank, currByte))
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{
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println_Msg(F(""));
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println_Msg(F("Erase failed"));
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display_Update();
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myFile.close();
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wait();
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return;
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}
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}
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}
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draw_progressbar(0x100000, 0x100000);
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//Write memory pack
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dataOut();
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controlOut_SNES();
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println_Msg(F("Writing pack..."));
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display_Update();
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for (int currBank = 0xC0; currBank < 0xD0; currBank++) {
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draw_progressbar(((currBank - 0xC0) * 0x10000), 0x100000);
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for (long currByte = 0; currByte < 65536; currByte++) {
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writeBank_SNES(0xC0, 0x0000, 0x10); //Program Byte
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writeBank_SNES(currBank, currByte, myFile.read());
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writeBank_SNES(0xC0, 0x0000, 0x70); //Status Mode
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writeCheck_SV();
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}
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}
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writeBank_SNES(0xC0, 0x0000, 0x70); //Status Mode
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writeCheck_SV();
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writeBank_SNES(0xC0, 0x0000, 0xFF); //Terminate write
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draw_progressbar(0x100000, 0x100000);
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//Verify
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dataIn(); //Set pins to input
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controlIn_SNES();
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myFile.seekSet(0); // Go back to file beginning
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println_Msg(F("Verifying..."));
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display_Update();
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for (int currBank = 0xC0; currBank < 0xD0; currBank++) {
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draw_progressbar(((currBank - 0xC0) * 0x10000), 0x100000);
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for (long currByte = 0; currByte < 65536; currByte++) {
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if (myFile.read() != readBank_SNES(currBank, currByte))
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{
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println_Msg(F(""));
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println_Msg(F("Verify failed"));
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display_Update();
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myFile.close();
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wait();
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return;
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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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draw_progressbar(0x100000, 0x100000);
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println_Msg(F("Finished successfully"));
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display_Update();
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wait();
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}
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else {
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print_Error(F("File doesn't exist"), false);
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}
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}
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void eraseCheck_SV(void) {
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byte ret;
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dataIn();
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controlIn_SNES();
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// Read register
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ret = readBank_SNES(0xC0, 0x0004);
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// CE or OE must be toggled with each subsequent status read or the
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// completion of a program or erase operation will not be evident.
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while ((ret & 0x80) == 0x00) { //Wait until X.bit7 = 1
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controlOut_SNES();
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// Switch CS(PH3) High
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PORTH |= (1 << 3);
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// Leave CE high for at least 60ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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controlIn_SNES();
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// Leave CE low for at least 50ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Read register
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ret = readBank_SNES(0xC0, 0x0004);
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}
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// Switch to write
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dataOut();
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controlOut_SNES();
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}
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void supplyCheck_SV(void) {
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byte ret;
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dataIn();
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controlIn_SNES();
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// Read register
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ret = readBank_SNES(0xC0, 0x0004);
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// CE or OE must be toggled with each subsequent status read or the
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// completion of a program or erase operation will not be evident.
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while ((ret & 0x08) == 0x08) { //Wait until X.bit3 = 0
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controlOut_SNES();
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// Switch CS(PH3) High
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PORTH |= (1 << 3);
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// Leave CE high for at least 60ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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controlIn_SNES();
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// Leave CE low for at least 50ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Read register
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ret = readBank_SNES(0xC0, 0x0004);
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}
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// Switch to write
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dataOut();
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controlOut_SNES();
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}
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void writeCheck_SV(void) {
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byte ret;
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dataIn();
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controlIn_SNES();
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// Read register
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ret = readBank_SNES(0xC0, 0x0000);
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// CE or OE must be toggled with each subsequent status read or the
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// completion of a program or erase operation will not be evident.
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while ((ret & 0x80) == 0x00) {
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controlOut_SNES();
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// Switch CS(PH3) High
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PORTH |= (1 << 3);
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// Leave CE high for at least 60ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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controlIn_SNES();
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// Leave CE low for at least 50ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Read register
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ret = readBank_SNES(0xC0, 0x0000);
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}
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// Switch to write
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dataOut();
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controlOut_SNES();
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}
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void detectCheck_SV(void) {
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int i = 0;
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byte ret;
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dataIn();
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controlIn_SNES();
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// Read register
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ret = readBank_SNES(0xC0, 0x0002);
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// CE or OE must be toggled with each subsequent status read or the
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// completion of a program or erase operation will not be evident.
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while ((ret & 0x80) == 0x00) {
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i++;
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if ( i > 10000)
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{
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//timeout
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break;
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}
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controlOut_SNES();
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// Switch CS(PH3) High
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PORTH |= (1 << 3);
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// Leave CE high for at least 60ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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controlIn_SNES();
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// Leave CE low for at least 50ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Read register
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ret = readBank_SNES(0xC0, 0x0002);
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}
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// Switch to write
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dataOut();
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controlOut_SNES();
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}
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void eraseAll_SV(void)
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{
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dataOut();
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controlOut_SNES();
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writeBank_SNES(0xC0, 0x0000, 0x50); //Clear Status Registers
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writeBank_SNES(0xC0, 0x0000, 0x71); //Status Mode
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supplyCheck_SV();
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writeBank_SNES(0xC0, 0x0000, 0xA7); //Chip Erase
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writeBank_SNES(0xC0, 0x0000, 0xD0); //Confirm
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writeBank_SNES(0xC0, 0x0000, 0x71); //Status Mode
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eraseCheck_SV();
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writeBank_SNES(0xC0, 0x0000, 0xFF); //Teriminate
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}
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//******************************************
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// End of File
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//******************************************
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