🍓 Acorn Atom Emulator

A real 6502 · MC6847 · 8255 PPI · faithful 1980 machine, running in your browser.

ROM Loader

Upload any files (any extension). Bytes are mapped raw to the addresses below.

⬜ BASIC ROM → 0xC000 empty ⬜ Floating Point ROM → 0xD000 empty ⬜ Kernel / COS ROM → 0xF000 empty

ACORN ATOM

Type on your physical keyboard or tap the keys above. Keys are mapped exactly to the Atom matrix — no wrong keys.