Bob published software, made hardware and wrote books for the Timex/Sinclair computers through his company, Gesso Products.
Bob Orrfelt
Companies
Products
Articles
- 32K RAM
- A Mystery Program
- Editor's Corner
- EPROMS Are Alive and Well ... And Living in Redwood City
- EPROMS Are Alive and Well...
- FDD Express: More Letters
- Forum
- Letters
- Suggested 2068 ROM Changes
- T/S 1000 Digital clock
- TS Chaos
Books
- Highfalutin' Computin' with Bob Orrfelt on Your Timex Sinclair 1000
- Timex Sinclair 2068 Memory Map and ROM disassembly