FREE BROWSER SIMULATOR · NO ACCOUNT

Custom Chip Simulator — Retro CPUs and Logic in the Browser

Beyond boards, Sensbench emulates custom silicon: Z80 and i8080 microcomputers, a Galaksija home computer, and pure 74HC-series logic — real architectures running real programs in the browser. It is the same QEMU-class engine that powers the STM32 and Raspberry Pi emulation, applied to the chips that started personal computing.

What you get

• Z80 projects — Larson scanners and LED chasers in C, with and without boards
• i8080 projects — banner streamer, button counter, killbits
• Galaksija — the Z80 home computer booting its classic ROM
• Pure digital gates — 74HC logic runs without any microcontroller
• Same canvas as the board simulator — mix chips, gates and MCUs in one project

Supported targets

Z80	8-bit retro CPU
i8080	8-bit retro CPU
Galaksija	Z80 home computer
74HC logic	pure gate circuits
Arduino Uno	arduino:avr:uno

Try these examples

FAQ

Can I write programs for the emulated Z80?

Yes — the Z80 examples run real C compiled for the architecture, and you can edit the source on the canvas. The full custom-chip emulation runs the actual instruction set, not a lookalike.

What is the difference from the board simulator?

It is the same engine, different targets. Boards use the Arduino core toolchain; custom chips run bare programs on emulated CPUs. Both coexist on one canvas, so a Z80 can blink an LED wired to the same breadboard as an Arduino.