96 lines
2.6 KiB
Plaintext
96 lines
2.6 KiB
Plaintext
// needs to be compiled with -m -C="-lraylib"
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extern InitWindow
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extern SetTargetFPS
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extern WindowShouldClose
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extern BeginDrawing
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extern ClearBackground
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extern DrawRectangle
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extern EndDrawing
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struct CHIP8
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memory: ptr
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pc: i64
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stack: array
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sp: i64
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reg: array
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I: i64
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delay_timer: i64
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sound_timer: i64
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keyboard: array
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display: ptr
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func chip8_create[] : CHIP8
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let fonts: array = [0xf0, 0x90, 0x90, 0x90, 0xf0, 0x20, 0x60, 0x20, 0x20, 0x70, 0xf0, 0x10, 0xf0, 0x80, 0xf0, 0xf0, 0x10, 0xf0, 0x10, 0xf0, 0x90, 0x90, 0xf0, 0x10, 0x10, 0xf0, 0x80, 0xf0, 0x10, 0xf0, 0xf0, 0x80, 0xf0, 0x90, 0xf0, 0xf0, 0x10, 0x20, 0x40, 0x40, 0xf0, 0x90, 0xf0, 0x90, 0xf0, 0xf0, 0x90, 0xf0, 0x10, 0xf0, 0xf0, 0x90, 0xf0, 0x90, 0x90, 0xe0, 0x90, 0xe0, 0x90, 0xe0, 0xf0, 0x80, 0x80, 0x80, 0xf0, 0xe0, 0x90, 0x90, 0x90, 0xe0, 0xf0, 0x80, 0xf0, 0x80, 0xf0, 0xf0, 0x80, 0xf0, 0x80, 0x80]
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let c: CHIP8 = new CHIP8
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c->memory = mem.alloc(4096)
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mem.zero(c->memory, 4096)
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c->display = mem.alloc(64*32)
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mem.zero(c->display, 64*32)
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c->stack = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
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c->reg = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
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c->keyboard = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
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for i in 0..80
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c->memory[i] = array.nth(fonts, i)
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mem.free(fonts)
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c->pc = 0x200
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return c
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func chip8_disassemble[c: CHIP8, ins_count: i64] : void
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return 0
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func chip8_step[c: CHIP8] : void
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return 0
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func main[argc: i64, argv: ptr] : i64
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let path: str = 0
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let disassemble: bool = 0
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for i in 1..argc
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let arg: str = mem.read64(argv + i * 8)
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if str.equal(arg, "-d")
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disassemble = 1
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else
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path = arg
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if path == 0
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io.println("Usage: chip8 -d <path>")
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return 1
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let c: CHIP8 = chip8_create()
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let bytes_size: ptr = 0
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let bytes: ptr = io.read_binary_file(path, ^bytes_size)
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for i in 0..bytes_size
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c->memory[0x200 + i] = bytes[i]
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if disassemble
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chip8_disassemble(c, bytes_size / 2)
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return 0
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InitWindow(640, 320, "CHIP-8")
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SetTargetFPS(60)
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while !WindowShouldClose()
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if c->delay_timer > 0
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c->delay_timer = c->delay_timer - 1
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if c->sound_timer > 0
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c->sound_timer = c->sound_timer - 1
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// TODO: buzzer
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for i in 0..25
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chip8_step(c)
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BeginDrawing()
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ClearBackground(0xffffffff)
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for y in 0..32
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for x in 0..64
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if c->display[x + y * 64] == 1
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DrawRectangle(x * 10, y * 10, 10, 10, 0x000000ff)
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EndDrawing() |