Arduino gameboy cart reader software, using https://github.com/insidegadgets/GBCartRead
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108 lines
2.5 KiB
108 lines
2.5 KiB
4 years ago
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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#define rom_offset(member) (0x100 + offsetof(struct rom_header, member))
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#define rom_offset_end(member) (0x100 + offsetof(struct rom_header, member) + sizeof(((struct rom_header *)0)->member))
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enum rom_cgb {
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ROM_CGB_SUPPORTED = 0x80,
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ROM_CGB_ONLY = 0xC0
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};
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enum rom_sgb {
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ROM_SGB_NO = 0x00,
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ROM_SGB_SUPPORTED = 0x03
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};
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enum rom_type {
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ROM_TYPE_ROM_ONLY = 0x00,
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ROM_TYPE_MBC1 = 0x01,
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ROM_TYPE_MBC1_RAM = 0x2,
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ROM_TYPE_MBC1_RAM_BATTERY = 0x03,
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// UNUSED = 0x04
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ROM_TYPE_MBC2 = 0x05,
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ROM_TYPE_MBC2_BATTERY = 0x06,
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// UNUSED = 0x07
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ROM_TYPE_ROM_RAM = 0x08,
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ROM_TYPE_ROM_RAM_BATTERY = 0x09,
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// UNUSED = 0x0A
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ROM_TYPE_MMM01 = 0x0B,
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ROM_TYPE_MMM01_RAM = 0x0C,
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ROM_TYPE_MMM01_RAM_BATTERY = 0x0D,
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// UNUSED = 0x0E
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ROM_TYPE_MBC3_TIMER_BATTERY = 0x0F,
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ROM_TYPE_MBC3_TIMER_RAM_BATTERY = 0x10,
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ROM_TYPE_MBC3 = 0x11,
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ROM_TYPE_MBC3_RAM = 0x12,
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ROM_TYPE_MBC3_RAM_BATTERY = 0x13,
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// UNUSED = 0x14
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// Doesn't exist, but included for "completeness".
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ROM_TYPE_MBC4 = 0x15,
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ROM_TYPE_MBC4_RAM = 0x16,
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ROM_TYPE_MBC4_RAM_BATTERY = 0x17,
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// UNUSED = 0x18
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ROM_TYPE_MBC5 = 0x19,
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ROM_TYPE_MBC5_RAM = 0x1A,
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ROM_TYPE_MBC5_RAM_BATTERY = 0x1B,
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ROM_TYPE_MBC5_RUMBLE = 0x1C,
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ROM_TYPE_MBC5_RUMBLE_RAM = 0x1D,
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ROM_TYPE_MBC5_RUMBLE_RAM_BATTERY = 0x1E,
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// UNUSED = 0x1F
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ROM_TYPE_MBC6_RAM_BATTERY = 0x20,
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// UNUSED = 0x21
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ROM_TYPE_MBC7_ACCEL_RAM_BATTERY = 0x22,
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// UNUSED ...
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ROM_TYPE_POCKET_CAMERA = 0xFC,
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ROM_TYPE_BANDAI_TAMA5 = 0xFD,
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ROM_TYPE_HUC3 = 0xFE,
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ROM_TYPE_HUC1_RAM_BATTERY = 0xFF
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};
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enum rom_region {
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ROM_REGION_JAPANESE = 0x00,
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ROM_REGION_INTERNATIONAL = 0x01
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};
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// http://gbdev.gg8.se/files/docs/mirrors/pandocs.html#thecartridgeheader
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// https://raw.githubusercontent.com/AntonioND/giibiiadvance/master/docs/TCAGBD.pdf (page 51)
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struct rom_header {
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uint8_t entry[4];
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uint8_t logo[0x30];
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uint8_t title[0xB];
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uint8_t manufacturer[4];
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uint8_t cgb_flag;
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uint8_t licensee[2];
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uint8_t sgb_flag;
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uint8_t type;
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uint8_t rom_size; // 0x8000 << x
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uint8_t ram_size; // MBC2 uses 0, but has a size of 512 * 4 bytes
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uint8_t region;
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uint8_t old_licensee; // If 0x33, use the new licensee
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uint8_t version;
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uint8_t header_checksum;
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uint8_t global_checksum[2]; // Big endian
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} __attribute__((packed));
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extern uint8_t rom_logo[];
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