PyxelChip8

Introduction

PyxelChip8 is a CHIP-8/SUPER-CHIP emulator that runs on Pyxel/Python library. Dev Notes here.

How to Play

• (a) Install the Python3.8 (python-3.8.9.exe), which can be obtained from https://www.python.org/downloads/
• (b) Install the Pyxel1.7.0 on Python from the command line:
  • C> pip install pyxel
• (c) Unzip the Chip8 Game Pack (c8games.zip) archive, which can be obtained from http://www.zophar.net/roms.phtml?op=show&type=chip8
• (d) From the command line, run:
  • C> python PyxelChip8.py <ROM file name>
  • Example: C> python PyxelChip8.py c8games/VBRIX
• (e) Click [x] when finished

How to control

The keys are mapped as follows.

Original |1|2|3|C| Mapping to |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|

In addition, 5/7/8/9 are mapped to the Up/Left/Down/Right arrow keys.

Specification

Memory

• RAM (200H - F10H)
• Small Hexadecimal font (F10H - F5FH)
• Big Hexadecimal font (F60H - FFFH)

Registers

• Data Registers (V0 .. VF)
• Address Registers (I)
• Timers (Delay and Sound)
• Stack (16 word length and stack pointer)

Graphics

• Sprite (Size: 8 x 1 .. 15, 16 x 16 pixel)
• Collision Flag
• Small and big hexadecimal fonts (Size: 8 x 5, 8 x 10 pixel)

Instruction set

• CHIP-8 instructions
  • Assignment, Arithmetic, Conditional Branch, Subroutine Call, Draw Sprite, etc.
• SUPER-CHIP instructions
  • Halt, Enable/Disable High-resolution mode, Draw 16x16 sprite,
  • Scroll down/left/right, Big font sprites
• XO-CHIP instructions
  • Scroll up

Keyboard

• Hexadecimal keyboard