🖥️ OSI Superboard II Emulator

Welcome to a faithful emulation of the Ohio Scientific Superboard II (Model 600), a legendary single-board computer from 1978.

To get started, you'll need three ROM files:

  • BASIC.ROM — 8 KB Microsoft BASIC interpreter
  • SYN600.ROM — 2 KB Monitor ROM (system firmware)
  • CHARGEN.ROM — 2 KB Character generator ROM

Upload them in the ROM Loader panel, then hit Power On. Files can have any extension — we detect them by size.

Search online for "OSI Superboard II ROM files" or "OSI 600 ROM dump" to find these ROMs from various retro-computing archives.

OSI Superboard II Emulator
Ohio Scientific Model 600 — circa 1978

💾 ROM Loader

▼
BASIC ROM
$A000–$BFFF (8 KB)
Drop file or click
Monitor ROM
$F800–$FFFF (2 KB)
Drop file or click
Character ROM
CHARGEN (2 KB)
Drop file or click
MEMORY MAP
$0000-
FFF RAM
$A000-$BFFF BASIC
$D000-$D3FF VIDEO
$DF00 KEYBOARD
$FC00 ACIA
$F800-$FFFF MON
OHIO SCIENTIFIC

📼 Cassette

▼
6850 ACIA Interface
Load tape file
000
ACIA STATUS
RDRF
TDRE
DCD
CTS
300 Baud (Kansas City Std)
🔊

🔧 Debug / Status

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Built with 🍓 — Not affiliated with Ohio Scientific Inc. — Remix on Berrry