# Tomato

> A functional 32-bit computer built from scratch in a dorm by Tyrone Marhguy, a Ghanaian computer engineering student at the University of Pennsylvania (Penn / UPenn), Penn Engineering Class of 2028.

Tomato is an independent 32-bit architecture: Dual-LUT ALU, Tomato OS on FPGA, a browser emulator (Virtual Tomato), and Envelop to text the physical machine. The complete computer runs on FPGA. The discrete build currently proves an 8-bit ALU slice. There is no public JSON compute API. Hardware jobs require an Envelop lease.

Today the machine is FPGA RTL plus discrete 74xx copper. A long-term goal is an ASIC implementation of Tomato — not a tapeout yet. Tomato is built for chip designers, RTL and verification engineers, University of Pennsylvania students, and students in Ghana who want a complete, inspectable computer they can run.

## Use it

- [Play Tomato OS](https://tomato.tmarhguy.com/virtual.html): run the shipped OS in the browser
- [Message Tomato](https://tomato.tmarhguy.com/envelop.html): Envelop, when a verified bridge holds a lease
- [Envelop chat](https://tmarhguy.github.io/envelop/chat/): web chat client
- [Contact](https://tomato.tmarhguy.com/contact.html): email and elsewhere

## Engineering

- [Architecture](https://tomato.tmarhguy.com/architecture.html): Dual-LUT datapath
- [ISA](https://tomato.tmarhguy.com/isa.html): 91 instructions plus NOP (92 burned rows)
- [Tomato OS](https://tomato.tmarhguy.com/os.html): assembly OS
- [Verification](https://tomato.tmarhguy.com/verification.html): Verilator + formal
- [Status](https://tomato.tmarhguy.com/status.html): what exists today
- [FPGA register file](https://tomato.tmarhguy.com/architecture.html): 256 × 32-bit on FPGA (no space for more); 32,768 is the discrete-faithful count
- [Source](https://github.com/tmarhguy/tomato): RTL, assembler, OS, KiCad

## About

- [About Tyrone Marhguy](https://tomato.tmarhguy.com/about.html): Ghana → Philadelphia; Achimota School; University of Pennsylvania, Penn Engineering, Class of 2028
- [FAQ](https://tomato.tmarhguy.com/faq.html)
- [Build journal](https://tomato.tmarhguy.com/journal.html)
- [What agents can do](https://tomato.tmarhguy.com/skill.md)
- [Longer digest](https://tomato.tmarhguy.com/llms-full.txt)