CHIP-8 Interpreter in D

Simple Chip-8 interpreter written in D. It uses the GLFW backend to draw the game screen. It does not have any sound support at the moment.

Currently only supports Chip-8 instructions. Emulation speed is not accurate.

Note: Roms are not included with this interpreter, you can always download it from the net or make your own.

Contents

• Building
• Usage
• Keys
• TODO
• References

Building

Note: Only tested on Windows

# Normal mode
$ dub

# Step mode for debugging, will print opcode by opcode (Press space to advance).
$ dub --config=StepMode

Usage

d_chip8 [PATH_TO_ROM]

Keys

Key mapping taken from here

Keypad                   Keyboard
+-+-+-+-+                +-+-+-+-+
|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|
+-+-+-+-+                +-+-+-+-+

[Space]   => Next Opcode (Only in step mode)
[Escape]  => Escape the emulator

TODO

• Pretty debug (Came across this Chip-8 implemented in Go and I wanted something like this)
• Super Chip-8 implementation
• Accurate speed?
• Add beep sound (Probably not high priority)
• Add quirks toggle (Refer to this emulator)

References

• http://www.multigesture.net/articles/how-to-write-an-emulator-chip-8-interpreter/
• http://en.wikipedia.org/wiki/CHIP-8
• http://www.pong-story.com/chip8/