__attribute__((section(".mapper_002_2"))) static uint8_t mapper_002_2_prg_read(struct nes_state *state, uint32_t addr) { struct mapper_002_2 *mapper = (struct mapper_002_2 *)&state->map; if(addr >= 0x8000 && addr < 0xc000) { return mapper->prg_bank0[addr & 0x3fff]; } else if(addr >= 0xc000) { return mapper->prg_bank1[addr & 0x3fff]; } return 0; } __attribute__((section(".mapper_002_2"))) static void mapper_002_2_prg_write(struct nes_state *state, uint32_t addr, uint8_t value) { struct mapper_002_2 *mapper = (struct mapper_002_2 *)&state->map; if(addr >= 0x8000) { mapper->prg_bank0 = state->prg_rom + ((value & 0x0f) * 0x4000); } } __attribute__((section(".mapper_002_2"))) static uint8_t mapper_002_2_chr_read(struct nes_state *state, uint32_t addr) { return state->chr_ram[addr]; } __attribute__((section(".mapper_002_2"))) static void mapper_002_2_chr_write(struct nes_state *state, uint32_t addr, uint8_t value) { state->chr_ram[addr] = value; } __attribute__((section(".mapper_002_2"))) static void mapper_002_2_init(struct nes_state *state) { struct mapper_002_2 *mapper = (struct mapper_002_2 *)&state->map; mapper->prg_bank0 = state->prg_rom; mapper->prg_bank1 = state->prg_rom + state->ines.prg_size - 0x4000; state->mapper.prg_read = mapper_002_2_prg_read; state->mapper.prg_write = mapper_002_2_prg_write; state->mapper.chr_read = mapper_002_2_chr_read; state->mapper.chr_write = mapper_002_2_chr_write; }