sfc_specs.h

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// SPDX-FileCopyrightText: 2015 maijin <maijin21@gmail.com>
// SPDX-License-Identifier: LGPL-3.0-only
 
// CPU_memory_map: http://wiki.nesdev.com/w/index.php/CPU_memory_map
 
#ifndef _SFC_SPECS_H
#define _SFC_SPECS_H
 
#define LOROM_PAGE_SIZE 0x8000
#define HIROM_PAGE_SIZE 0x10000
#define BANK_SIZE       0x10000
 
#define SFC_HDR_SIZE  sizeof(sfc_int_hdr)
#define LOROM_HDR_LOC 0x7FC0
#define HIROM_HDR_LOC 0xFFC0
 
#define ADDMEM_START_ADDRESS 0x6000
#define ADDMEM_SIZE          0x2000
 
// identical for both LoROM and HiROM
 
#define PPU1_REG_ADDRESS 0x2100
#define PPU1_REG_SIZE    0x0100
 
#define DSP_REG_ADDRESS 0x3000
#define DSP_REG_SIZE    0x1000
 
#define OLDJOY_REG_ADDRESS 0x4000
#define OLDJOY_REG_SIZE    0x0100
 
#define PPU2_REG_ADDRESS 0x4200
#define PPU2_REG_SIZE    0x0300
 
#define LOWRAM_START_ADDRESS 0x7E0000
#define LOWRAM_SIZE          0x2000
 
#define LOWRAM_MIRROR_START_ADDRESS 0x0000
#define LOWRAM_MIRROR_SIZE          0x2000
 
#define HIRAM_START_ADDRESS 0x7E2000
#define HIRAM_SIZE          0x6000
 
#define EXTRAM_START_ADDRESS 0x7E8000
#define EXTRAM_SIZE          0x18000
 
RZ_PACKED(
    typedef struct {
        char name[0x15]; // game title.
        ut8 rom_setup; // ROM setup (LoROM/HiROM, etc.)
        ut8 rom_type;
        ut8 rom_size; // in 1kb chunks
        ut8 sram_size; // in 1kb chunks
        ut8 dest_code;
        ut8 fixed_0x33; // should be equal to 0x33
        ut8 rom_version;
        ut16 comp_check; // should be equal to ~checksum
        ut16 checksum;
    })
sfc_int_hdr;
 
#endif // _SFC_SPECS_H