chip-8 emulator — free browser tool | fatcousin

browser-native chip-8 vm · 35 opcodes · 64×32 display · 16-key hex keypad · delay + sound timers · opcode disassembler · step debugger · runs locally

drop rom

drop a chip-8 rom

.ch8 .rom .bin — programs start at 0x200

Select file

status

drop a .ch8 or .rom file, or choose a built-in demo

display

controls

speed — 10 inst/frame · ~600 inst/s

shift quirk:

keypad

keyboard: 1234 / QWER / ASDF / ZXCV — keys also work while page is focused

chip-8 reference

specs

RAM4 KB (0x000–0xFFF)

RegistersV0–VF (8-bit) + I (12-bit)

Stack16-level subroutine stack

Display64×32 monochrome XOR sprites

Opcodes35 instructions

Programsstart at 0x200

Font4×5 sprites at 0x050–0x09F

TimersDT (delay) + ST (sound) @ 60 Hz

keyboard map

CHIP-8: 1 2 3 Ckeyboard: 1 2 3 4

CHIP-8: 4 5 6 Dkeyboard: Q W E R

CHIP-8: 7 8 9 Ekeyboard: A S D F

CHIP-8: A 0 B Fkeyboard: Z X C V