oboy/src/memory.ml

17 lines
440 B
OCaml

(** http://bgb.bircd.org/pandocs.htm#memorymap
http://imrannazar.com/GameBoy-Emulation-in-JavaScript:-Memory *)
type map = {
rom_bank_00 : bytes; (* cartridge, 16KB *)
rom_bank_01 : bytes; (* additional bank, 16KB *)
vram : bytes; (* Video RAM, 8KB *)
}
let init (cartridge: Cartridge.t) =
let open Bytes in
{
rom_bank_00 = sub cartridge.full_rom 0 0x4000;
rom_bank_01 = create 0x4000;
vram = create 0x2000;
}