mirror of https://github.com/sanni/cartreader.git
718 lines
18 KiB
C++
718 lines
18 KiB
C++
//******************************************
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// CASIO LOOPY MODULE
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//******************************************
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// Loopy
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// Cartridge Pinout
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// 90P 2.1mm pitch connector
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//
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// +--------+
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// +5V -| 1 90 |- D11
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// -| 2 89 |- +5V
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// -| 3 88 |- D9
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// -| 4 87 |-
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// -| 5 86 |- D7
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// -| 6 85 |- D5
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// -| 7 84 |- D15
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// -| 8 83 |- D13
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// RAMCS1 -| 9 82 |- D12
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// -| 10 81 |- D1
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// RAMWE -| 11 80 |-
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// -| 12 79 |-
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// GND -| 13 78 |- A2
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// +5V -| 14 77 |- A4
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// -| 15 76 |- A19
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// -| 16 75 |- GND
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// -| 17 74 |- A18
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// -| 18 73 |- A16
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// -| 19 72 |- A17
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// -| 20 71 |- A14
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// -| 21 70 |- A5
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// A12 -| 22 69 |- A7
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// A10 -| 23 68 |- A9
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// A8 -| 24 67 |- A11
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// A6 -| 25 66 |-
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// A13 -| 26 65 |-
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// A15 -| 27 64 |-
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// A20 -| 28 63 |-
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// +5V -| 29 62 |-
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// A3 -| 30 61 |-
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// A21 -| 31 60 |- CLK
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// A1 -| 32 59 |-
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// A0 -| 33 58 |-
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// -| 34 57 |- +5V
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// D0 -| 35 56 |- OE
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// RESET -| 36 55 |-
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// D2 -| 37 54 |- ROMCE
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// D3 -| 38 53 |-
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// D14 -| 39 52 |-
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// D4 -| 40 51 |-
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// D6 -| 41 50 |-
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// D8 -| 42 49 |-
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// -| 43 48 |-
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// D10 -| 44 47 |- GND
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// GND -| 45 46 |-
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// +--------+
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//
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// * Blank pins have various uses depending on cartridge but are not necessary for dumping.
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// IMPORTANT: All data are stored as BIG-ENDIAN. Many ROM dumps online are little endian.
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// See https://github.com/kasamikona/Loopy-Tools/blob/master/ROM%20Structure.md
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//
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// By @partlyhuman
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// Special thanks to @kasamikona
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#ifdef ENABLE_LOOPY
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// SH-1 memory map locations, ROM starts here
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const uint32_t LOOPY_MAP_ROM_ZERO = 0x0E000000;
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const uint32_t LOOPY_MAP_SRAM_ZERO = 0x02000000;
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// Control pins
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const int LOOPY_ROMCE = 42;
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const int LOOPY_OE = 43;
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const int LOOPY_RAMWE = 6;
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const int LOOPY_RAMCS1 = 7;
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const int LOOPY_RESET = A7;
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// The internal checksum read from the cart header at 08h, will be checked against an actual sum
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uint32_t loopyChecksum;
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uint32_t loopyChecksumStart;
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uint32_t loopyChecksumEnd;
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char loopyRomNameLong[64];
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//******************************************
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// SETUP
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//******************************************
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void setup_LOOPY() {
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// Request 5V
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setVoltage(VOLTS_SET_5V);
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// Set Address Pins to Output
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// PK1-PK7, PA1-PA7, PC0-PC3, PL0-PL3
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// Take whole port and unset the exceptions later
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DDRK = DDRA = DDRC = DDRL = 0xFF;
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// Control pins, all active low
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pinMode(LOOPY_ROMCE, OUTPUT);
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pinMode(LOOPY_OE, OUTPUT);
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pinMode(LOOPY_RAMWE, OUTPUT);
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pinMode(LOOPY_RAMCS1, OUTPUT);
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pinMode(LOOPY_RESET, OUTPUT);
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digitalWrite(LOOPY_ROMCE, HIGH);
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digitalWrite(LOOPY_OE, HIGH);
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digitalWrite(LOOPY_RAMWE, HIGH);
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digitalWrite(LOOPY_RAMCS1, HIGH);
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digitalWrite(LOOPY_RESET, HIGH);
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// Set Pins (D0-D15) to Input
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dataIn_LOOPY();
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getCartInfo_LOOPY();
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mode = CORE_LOOPY;
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}
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//******************************************
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// MENU
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//******************************************
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// Base Menu
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static const char loopyMenuItem4[] PROGMEM = "Format SRAM";
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static const char* const menuOptionsLOOPY[] PROGMEM = { FSTRING_REFRESH_CART, FSTRING_READ_ROM, FSTRING_READ_SAVE, FSTRING_WRITE_SAVE, loopyMenuItem4, FSTRING_RESET };
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void loopyMenu() {
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convertPgm(menuOptionsLOOPY, 5);
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uint8_t mainMenu = question_box(F("CASIO LOOPY MENU"), menuOptions, 5, 0);
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display_Clear();
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display_Update();
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bool waitForInput = false;
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switch (mainMenu) {
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case 0:
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setup_LOOPY();
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break;
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case 1:
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// Read ROM
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sd.chdir("/");
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readROM_LOOPY();
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sd.chdir("/");
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waitForInput = true;
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break;
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case 2:
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// Read SRAM
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sd.chdir("/");
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println_Msg(F("Reading SRAM..."));
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display_Update();
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readSRAM_LOOPY();
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sd.chdir("/");
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waitForInput = true;
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break;
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case 3:
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// Write SRAM
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// Change working dir to root
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sd.chdir("/");
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fileBrowser(F("Select SAV file"));
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display_Clear();
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writeSRAM_LOOPY();
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writeErrors = verifySRAM_LOOPY();
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if (writeErrors == 0) {
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println_Msg(F("SRAM verified OK"));
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display_Update();
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} else {
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print_STR(error_STR, 0);
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print_Msg(writeErrors);
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print_STR(_bytes_STR, 1);
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print_Error(did_not_verify_STR);
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}
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waitForInput = true;
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break;
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case 4:
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// Format SRAM
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println_Msg(F("Formatting SRAM..."));
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display_Update();
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formatSRAM_LOOPY();
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waitForInput = true;
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break;
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case 5:
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// reset
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resetArduino();
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break;
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}
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#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
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if (waitForInput) {
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// Wait for user input
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println_Msg(FS(FSTRING_EMPTY));
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// Prints string out of the common strings array either with or without newline
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print_STR(press_button_STR, 1);
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display_Update();
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wait();
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}
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#endif
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}
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//******************************************
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// LOW LEVEL FUNCTIONS
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//******************************************
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void setAddress_LOOPY(unsigned long A) {
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// PK1 A0
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// PK2 A1
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// PK3 A21
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// PK4 A3
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// PK5 A20
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// PK6 A15
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// PK7 A13
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PORTK = (bitRead(A, 0) << 1)
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| (bitRead(A, 1) << 2)
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| (bitRead(A, 21) << 3)
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| (bitRead(A, 3) << 4)
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| (bitRead(A, 20) << 5)
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| (bitRead(A, 15) << 6)
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| (bitRead(A, 13) << 7);
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// PA1 A2
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// PA2 A4
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// PA3 A19
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// PA4 A18
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// PA5 A16
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// PA6 A17
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// PA7 A14
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PORTA = (bitRead(A, 2) << 1)
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| (bitRead(A, 4) << 2)
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| (bitRead(A, 19) << 3)
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| (bitRead(A, 18) << 4)
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| (bitRead(A, 16) << 5)
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| (bitRead(A, 17) << 6)
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| (bitRead(A, 14) << 7);
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// PC0 A6
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// PC1 A8
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// PC2 A10
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// PC3 A12
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PORTC = (bitRead(A, 6))
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| (bitRead(A, 8) << 1)
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| (bitRead(A, 10) << 2)
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| (bitRead(A, 12) << 3);
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// CAUTION PORTL is shared, writing to PORTL indiscriminately will mess with CE/OE
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// D42 PL7 CE
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// D43 PL6 OE
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// D44 PL5
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// D45 PL4
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// D46 PL3 A11
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// D47 PL2 A9
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// D48 PL1 A7
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// D49 PL0 A5
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digitalWrite(46, bitRead(A, 11));
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digitalWrite(47, bitRead(A, 9));
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digitalWrite(48, bitRead(A, 7));
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digitalWrite(49, bitRead(A, 5));
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// PORTL = (bitRead(A, 5))
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// | (bitRead(A, 7) << 1)
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// | (bitRead(A, 9) << 2)
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// | (bitRead(A, 11) << 3);
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}
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uint16_t getWord_LOOPY() {
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// A8 PK0 D0
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// D22 PA0 D1
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// A6 PF6 D2
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// A5 PF5 D3
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// A3 PF3 D4
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// D40 PG1 D5
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// A2 PF2 D6
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// D41 PG0 D7
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// A1 PF1 D8
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// D3 PE5 D9
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// A0 PF0 D10
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// D2 PE4 D11
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// D14 PJ1 D12
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// D15 PJ0 D13
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// A4 PF4 D14
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// D4 PG5 D15
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return bitRead(PINK, 0)
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| (bitRead(PINA, 0) << 1)
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| (bitRead(PINF, 6) << 2)
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| (bitRead(PINF, 5) << 3)
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| (bitRead(PINF, 3) << 4)
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| (bitRead(PING, 1) << 5)
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| (bitRead(PINF, 2) << 6)
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| (bitRead(PING, 0) << 7)
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| (bitRead(PINF, 1) << 8)
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| (bitRead(PINE, 5) << 9)
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| (bitRead(PINF, 0) << 10)
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| (bitRead(PINE, 4) << 11)
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| (bitRead(PINJ, 1) << 12)
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| (bitRead(PINJ, 0) << 13)
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| (bitRead(PINF, 4) << 14)
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| (bitRead(PING, 5) << 15);
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}
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uint8_t getByte_LOOPY() {
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return bitRead(PINK, 0)
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| (bitRead(PINA, 0) << 1)
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| (bitRead(PINF, 6) << 2)
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| (bitRead(PINF, 5) << 3)
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| (bitRead(PINF, 3) << 4)
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| (bitRead(PING, 1) << 5)
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| (bitRead(PINF, 2) << 6)
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| (bitRead(PING, 0) << 7);
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}
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void setByte_LOOPY(uint8_t D) {
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// Since D lines are spread among so many ports, this is far more legible, and only used for SRAM
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digitalWrite(A8, bitRead(D, 0));
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digitalWrite(22, bitRead(D, 1));
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digitalWrite(A6, bitRead(D, 2));
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digitalWrite(A5, bitRead(D, 3));
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digitalWrite(A3, bitRead(D, 4));
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digitalWrite(40, bitRead(D, 5));
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digitalWrite(A2, bitRead(D, 6));
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digitalWrite(41, bitRead(D, 7));
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}
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byte readByte_LOOPY(unsigned long myAddress) {
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setAddress_LOOPY(myAddress);
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// 100ns MAX
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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return getByte_LOOPY();
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}
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void writeByte_LOOPY(unsigned long myAddress, byte myData) {
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setAddress_LOOPY(myAddress);
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digitalWrite(LOOPY_RAMWE, LOW);
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// tWHZ 35
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NOP;
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NOP;
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dataOut_LOOPY();
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setByte_LOOPY(myData);
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// tWP 60
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NOP;
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NOP;
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NOP;
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NOP;
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digitalWrite(LOOPY_RAMWE, HIGH);
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dataIn_LOOPY();
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}
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word readWord_LOOPY(unsigned long myAddress) {
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setAddress_LOOPY(myAddress);
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digitalWrite(LOOPY_ROMCE, LOW);
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digitalWrite(LOOPY_OE, LOW);
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// 16mhz = 62.5ns
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NOP;
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NOP;
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word tempWord = getWord_LOOPY();
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digitalWrite(LOOPY_ROMCE, HIGH);
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digitalWrite(LOOPY_OE, HIGH);
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return tempWord;
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}
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// Switch data pins to write
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void dataOut_LOOPY() {
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// // PA0
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// DDRA |= 0x01;
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// // PK0
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// DDRK |= 0x01;
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// // PG0, PG1, PG5 (rest unused?)
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// DDRG = 0xFF;
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// // PJ0-1 (rest unused?)
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// DDRJ = 0xFF;
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// // PE4-PE5 (rest unused?)
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// DDRE = 0xFF;
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// // PF0-PF6
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// DDRF |= 0b0111111;
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// Only bothering to change lower bits since we never write words just bytes
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pinMode(A8, OUTPUT);
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pinMode(22, OUTPUT);
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pinMode(A6, OUTPUT);
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pinMode(A5, OUTPUT);
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pinMode(A3, OUTPUT);
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pinMode(40, OUTPUT);
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pinMode(A2, OUTPUT);
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pinMode(41, OUTPUT);
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// pinMode(A1, OUTPUT);
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// pinMode(3, OUTPUT);
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// pinMode(A0, OUTPUT);
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// pinMode(2, OUTPUT);
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// pinMode(14, OUTPUT);
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// pinMode(15, OUTPUT);
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// pinMode(A4, OUTPUT);
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// pinMode(4, OUTPUT);
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}
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// Switch data pins to read
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void dataIn_LOOPY() {
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// // PA0
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// DDRA &= ~0x01;
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// // PK0
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// DDRK &= ~0x01;
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// // PG0, PG1, PG5 (rest unused?)
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// DDRG = 0x00;
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// // PJ0-1 (rest unused?)
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// DDRJ = 0x00;
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// // PE4-PE5 (rest unused?)
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// DDRE = 0x00;
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// // PF0-PF6
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// DDRF &= ~0b0111111;
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pinMode(A8, INPUT);
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pinMode(22, INPUT);
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pinMode(A6, INPUT);
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pinMode(A5, INPUT);
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pinMode(A3, INPUT);
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pinMode(40, INPUT);
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pinMode(A2, INPUT);
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pinMode(41, INPUT);
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pinMode(A1, INPUT);
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pinMode(3, INPUT);
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pinMode(A0, INPUT);
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pinMode(2, INPUT);
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pinMode(14, INPUT);
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pinMode(15, INPUT);
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pinMode(A4, INPUT);
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pinMode(4, INPUT);
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}
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//******************************************
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// CART INFO
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//******************************************
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// A little different than many games, loopy DB stores the checksum present in the header, so we can determine the rom name before saving, without renaming
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bool setRomName_LOOPY(const char* database, char* crcStr, int stripExtensionChars = 4) {
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char gamename[96];
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char crc_search[9];
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bool found;
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sd.chdir();
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if (!myFile.open(database, O_READ)) {
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return false;
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}
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while (myFile.available()) {
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get_line(gamename, &myFile, sizeof(gamename));
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get_line(crc_search, &myFile, sizeof(crc_search));
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skip_line(&myFile); //Skip every 3rd line
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if (strcmp(crc_search, crcStr) == 0) {
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found = true;
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strlcpy(loopyRomNameLong, gamename, strlen(gamename) - stripExtensionChars + 1);
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strcpy(romName, loopyRomNameLong);
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break;
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}
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}
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myFile.close();
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return found;
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}
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void getCartInfo_LOOPY() {
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display_Clear();
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// Set control
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dataIn_LOOPY();
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// First word after header stored as 32-bit pointer at 0h, final word (inclusive) at 4h
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// based on SH-1 memory mapped location of ROM (shift to rebase on zero)
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loopyChecksumStart = (((uint32_t)readWord_LOOPY(0x0) << 16) | (uint32_t)readWord_LOOPY(0x2)) - LOOPY_MAP_ROM_ZERO;
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loopyChecksumEnd = (((uint32_t)readWord_LOOPY(0x4) << 16) | (uint32_t)readWord_LOOPY(0x6)) - LOOPY_MAP_ROM_ZERO;
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// Full cart size DOES include the header, don't subtract it off :)
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cartSize = loopyChecksumEnd + 2;
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// SRAM first and last byte locations stored at 10h and 14h, based on SH-1 memory mapped location of SRAM
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uint32_t loopySramStart = (((uint32_t)readWord_LOOPY(0x10) << 16) | (uint32_t)readWord_LOOPY(0x12)) - LOOPY_MAP_SRAM_ZERO;
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uint32_t loopySramEnd = (((uint32_t)readWord_LOOPY(0x14) << 16) | (uint32_t)readWord_LOOPY(0x16)) - LOOPY_MAP_SRAM_ZERO;
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sramSize = loopySramEnd - loopySramStart + 1;
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// TODO sanity check these values
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// Get internal checksum from header
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loopyChecksum = ((uint32_t)readWord_LOOPY(0x8) << 16) | (uint32_t)readWord_LOOPY(0xA);
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sprintf(checksumStr, "%08lX", loopyChecksum);
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// Look up in database
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strcpy(loopyRomNameLong, "LOOPY");
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strcpy(romName, loopyRomNameLong);
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setRomName_LOOPY("loopy.txt", checksumStr);
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println_Msg(F("Cart Info"));
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println_Msg(FS(FSTRING_SPACE));
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print_Msg(F("Name: "));
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println_Msg(loopyRomNameLong);
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print_Msg(F("Checksum: "));
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println_Msg(checksumStr);
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print_Msg(F("Size: "));
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print_Msg(cartSize * 8 / 1024 / 1024);
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println_Msg(F(" MBit"));
|
|
print_Msg(F("Sram: "));
|
|
print_Msg(sramSize * 8 / 1024);
|
|
println_Msg(F(" KBit"));
|
|
println_Msg(FS(FSTRING_SPACE));
|
|
|
|
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
|
|
// Wait for user input
|
|
// Prints string out of the common strings array either with or without newline
|
|
print_STR(press_button_STR, 1);
|
|
display_Update();
|
|
wait();
|
|
#endif
|
|
}
|
|
|
|
//******************************************
|
|
// READ CODE
|
|
//******************************************
|
|
|
|
void readROM_LOOPY() {
|
|
dataIn_LOOPY();
|
|
|
|
createFolder("LOOPY", "ROM", romName, "bin");
|
|
|
|
display_Clear();
|
|
print_STR(saving_to_STR, 0);
|
|
print_Msg(folder);
|
|
println_Msg(F("/..."));
|
|
display_Update();
|
|
|
|
foldern = foldern + 1;
|
|
EEPROM_writeAnything(0, foldern);
|
|
|
|
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
|
|
print_FatalError(sd_error_STR);
|
|
}
|
|
|
|
draw_progressbar(0, cartSize);
|
|
|
|
const size_t sdBufferSize = 512;
|
|
uint32_t sum = 0;
|
|
|
|
digitalWrite(LOOPY_ROMCE, LOW);
|
|
|
|
for (unsigned long ptr = 0; ptr < cartSize;) {
|
|
word myWord = readWord_LOOPY(ptr);
|
|
|
|
// aggregate checksum over 16-bit words, starting at 80h, this address is stored in header but never varies
|
|
if (ptr >= loopyChecksumStart) {
|
|
sum += myWord;
|
|
}
|
|
|
|
// Store in buffer
|
|
sdBuffer[ptr++ % sdBufferSize] = (myWord >> 8) & 0xFF;
|
|
sdBuffer[ptr++ % sdBufferSize] = myWord & 0xFF;
|
|
|
|
// Flush when buffer full
|
|
if (ptr % sdBufferSize == 0) {
|
|
myFile.write(sdBuffer, sdBufferSize);
|
|
blinkLED();
|
|
// Only update progress bar every 64kb
|
|
if (ptr % 0x10000 == 0) {
|
|
draw_progressbar(ptr, cartSize);
|
|
}
|
|
}
|
|
}
|
|
// TODO this assumes size is divisible by 512
|
|
myFile.close();
|
|
|
|
digitalWrite(LOOPY_ROMCE, HIGH);
|
|
|
|
// Instead of the CRC32, check the internal integrity based on the header checksum
|
|
print_Msg(F("Header sum: "));
|
|
println_Msg(checksumStr);
|
|
print_Msg(F("Actual sum: "));
|
|
|
|
char calculatedChecksumStr[9];
|
|
sprintf(calculatedChecksumStr, "%08lX", sum);
|
|
println_Msg(calculatedChecksumStr);
|
|
|
|
if (sum == loopyChecksum) {
|
|
println_Msg(F("INTEGRITY OK :)"));
|
|
} else {
|
|
println_Msg(F("INTEGRITY FAIL! Bad dump"));
|
|
}
|
|
|
|
display_Update();
|
|
}
|
|
|
|
//******************************************
|
|
// SRAM
|
|
//******************************************
|
|
|
|
void writeSRAM_LOOPY() {
|
|
// Being nice to the SRAM and not touching the data bus except when WE is LOW
|
|
dataIn_LOOPY();
|
|
|
|
sprintf(filePath, "%s/%s", filePath, fileName);
|
|
println_Msg(F("Restoring SRAM from"));
|
|
println_Msg(filePath);
|
|
display_Update();
|
|
|
|
digitalWrite(LOOPY_ROMCE, HIGH);
|
|
digitalWrite(LOOPY_RAMCS1, LOW);
|
|
digitalWrite(LOOPY_RESET, HIGH);
|
|
digitalWrite(LOOPY_OE, LOW);
|
|
|
|
if (myFile.open(filePath, O_READ)) {
|
|
for (unsigned long currByte = 0; currByte < sramSize; currByte++) {
|
|
writeByte_LOOPY(currByte, myFile.read());
|
|
if (currByte % 512 == 0) {
|
|
blinkLED();
|
|
}
|
|
}
|
|
myFile.close();
|
|
|
|
print_STR(done_STR, 1);
|
|
display_Update();
|
|
} else {
|
|
print_FatalError(sd_error_STR);
|
|
}
|
|
|
|
digitalWrite(LOOPY_RAMCS1, HIGH);
|
|
digitalWrite(LOOPY_OE, HIGH);
|
|
|
|
dataIn_LOOPY();
|
|
}
|
|
|
|
void formatSRAM_LOOPY() {
|
|
dataIn_LOOPY();
|
|
digitalWrite(LOOPY_ROMCE, HIGH);
|
|
digitalWrite(LOOPY_RAMCS1, LOW);
|
|
digitalWrite(LOOPY_RESET, HIGH);
|
|
digitalWrite(LOOPY_OE, LOW);
|
|
|
|
for (unsigned long currByte = 0; currByte < sramSize; currByte++) {
|
|
writeByte_LOOPY(currByte, 0);
|
|
if (currByte % 512 == 0) {
|
|
blinkLED();
|
|
}
|
|
}
|
|
|
|
digitalWrite(LOOPY_RAMCS1, HIGH);
|
|
digitalWrite(LOOPY_OE, HIGH);
|
|
dataIn_LOOPY();
|
|
print_STR(done_STR, 1);
|
|
display_Update();
|
|
}
|
|
|
|
void readSRAM_LOOPY() {
|
|
dataIn_LOOPY();
|
|
|
|
createFolder("LOOPY", "SAVE", romName, "sav");
|
|
|
|
foldern = foldern + 1;
|
|
EEPROM_writeAnything(0, foldern);
|
|
|
|
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
|
|
print_FatalError(sd_error_STR);
|
|
}
|
|
|
|
digitalWrite(LOOPY_ROMCE, HIGH);
|
|
digitalWrite(LOOPY_RAMCS1, LOW);
|
|
digitalWrite(LOOPY_OE, LOW);
|
|
|
|
const size_t sdBufferSize = 512;
|
|
for (unsigned long ptr = 0; ptr < sramSize;) {
|
|
uint8_t b = readByte_LOOPY(ptr);
|
|
sdBuffer[ptr++ % sdBufferSize] = b;
|
|
if (ptr % sdBufferSize == 0) {
|
|
myFile.write(sdBuffer, sdBufferSize);
|
|
blinkLED();
|
|
}
|
|
}
|
|
|
|
digitalWrite(LOOPY_OE, HIGH);
|
|
digitalWrite(LOOPY_RAMCS1, HIGH);
|
|
|
|
myFile.close();
|
|
print_Msg(F("Saved to "));
|
|
print_Msg(folder);
|
|
display_Update();
|
|
}
|
|
|
|
unsigned long verifySRAM_LOOPY() {
|
|
dataIn_LOOPY();
|
|
writeErrors = 0;
|
|
|
|
digitalWrite(LOOPY_ROMCE, HIGH);
|
|
digitalWrite(LOOPY_RAMCS1, LOW);
|
|
digitalWrite(LOOPY_OE, LOW);
|
|
|
|
if (myFile.open(filePath, O_READ)) {
|
|
for (unsigned long currBuffer = 0; currBuffer < sramSize; currBuffer += 512) {
|
|
for (int currByte = 0; currByte < 512; currByte++) {
|
|
byte myByte = readByte_LOOPY(currBuffer + currByte);
|
|
sdBuffer[currByte] = myByte;
|
|
}
|
|
for (int i = 0; i < 512; i++) {
|
|
if (myFile.read() != sdBuffer[i]) {
|
|
writeErrors++;
|
|
}
|
|
}
|
|
}
|
|
myFile.close();
|
|
} else {
|
|
print_FatalError(sd_error_STR);
|
|
}
|
|
|
|
digitalWrite(LOOPY_OE, HIGH);
|
|
digitalWrite(LOOPY_RAMCS1, HIGH);
|
|
|
|
return writeErrors;
|
|
}
|
|
#endif
|