chip8

A CHIP-8 emulator written in Go.

Usage

Usage of chip8:
  -scaleFactor int
        Display scale factor (default 10)
  rom
        Path to ROM (mandatory)

The original CHIP-8 had a 64×32 pixel display, which is too small for modern screens. The optional scaleFactor argument can be used to upscale it to a more sensible size. With the default value of 10 the emulated display will have a size of 640×320 pixels and each CHIP-8 pixel will be rendered as 10x10px rectangle.

Keyboard mapping

CHIP-8 systems used a hexadecimal keyboard with the layout shown on the left. This is mapped to the physical keyboard as shown on the right.

|---|---|---|---|               |---|---|---|---|
| 1 | 2 | 3 | C |               | 1 | 2 | 3 | 4 |
|---|---|---|---|               |---|---|---|---|
| 4 | 5 | 6 | D |               | Q | W | E | R |
|---|---|---|---|               |---|---|---|---|
| 7 | 8 | 9 | E |               | A | S | D | F |
|---|---|---|---|               |---|---|---|---|
| A | 0 | B | F |               | Z | X | C | V |
|---|---|---|---|               |---|---|---|---|

So to get “deadbeef” inside the emulator you’d have to type “rfzrcffv”.

License

MIT License Copyright (c) 2022 Michael Kohl

For the full license text see LICENSE.

GitHub

View Github