From f1bd6a7d2f4ffe3e5263e0254bcf7522ab381264 Mon Sep 17 00:00:00 2001 From: Peter Fors Date: Sat, 5 Apr 2025 08:58:12 +0200 Subject: transform to switch case for ppu_tick() --- mapper_0000.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 mapper_0000.c (limited to 'mapper_0000.c') diff --git a/mapper_0000.c b/mapper_0000.c new file mode 100644 index 0000000..e075de5 --- /dev/null +++ b/mapper_0000.c @@ -0,0 +1,24 @@ + + +static void mapper_0000_init(struct nes_state *state) { + // Nothing to initialize for 001 +} + +__attribute__((hot)) +static uint8_t mapper_0000_prg_read(struct nes_state *state, uint32_t addr) { + uint32_t prg_size = state->ines.prg_size; + + uint32_t mask = (state->ines.prg_size == 16384) ? 0x3fff : 0x7fff; + return state->prg_rom[addr & mask]; +} + +static void mapper_0000_prg_write(struct nes_state *state, uint32_t addr, uint8_t value) { +} + +__attribute__((hot)) +static uint8_t mapper_0000_chr_read(struct nes_state *state, uint32_t addr) { + return state->chr_rom[addr]; +} + +static void mapper_0000_chr_write(struct nes_state *state, uint32_t addr, uint8_t value) { +} -- cgit v1.2.3