TRS80 Model 1 computer
This page is about my very first real computer that I bought with the money from my first savings account, the famous TRS80 Model 1 level 2 computer. In 1980 there was little choice in hobby computers, there was the Sinclair ZX-80, the Commodore Vic-20 and the TRS-80 and after much consideration I decided that the TRS-80 wss the best. The TRS-80 had just been on the market for three years and I bought one of the first Level II versions. I had been making digital circuits since I was fourteen, read everything whatever was available about computers and digital technology and learned to program on a simple Basic computer board in Basic and Assembler. In no time I had expanded the memory and increased the speed and I did my first repairs to the TRS80 computer. I became a member of the users' association and experienced that in the Netherlands we had 1024 members. I then also started working for Tandy and sold many TRS80 computer systems and wrote a lot of software in my spare time and even sold software for the TRS80. At a certain point I knew the TRS80 Model 1 Level II computer inside out. I also loved Adventure games and became friends (to this day) with Scott Adams who was the most well-known developer of Adventure games. The TRS80 Model I level II computer has been my good companion for many years of my life and in a way it even determined my career. After the TRS-80 I bought the Sinclair Spectrum and the MSX (also because they all have a Z80 processor). I went to work for Micro Technology (and indirectly for Philips MSX) and developed MSX hardware and software. I have always cherished the TRS-80 as my very first real computer, but unfortunately it was lost during a move. I have since bought an old copy again, this first computer will always be special to me. On this page I collect everything useful information about the TRS-80 model I level II computer.
Specifications if the TRS80 Model 1 computer
Links to information, documentation and tips
A very extensive description with schematics of the TRS80 Model I level II computer.
The well-known technical reference manual that Tandy sold and which was very poorly available.
This is the technical reference manual of the TRS80 expansion interface.
Wikipedia's page about the TRS80 model 1. TRS80 wikipedia page
A very complete page with information about the TRS80 model 1. www.trs-80.org/model-1.
Another very complete page with information about the TRS80 model 1 oldcomputers.net/trs80i
A nice page about bringing a TRS80 Model 1 computer back to life. classic-computers.org.nz/blog/2015-03-13-trs-80-model1-L1-fix
A site with a lot of information about all TRS80 computers (Ira Goldklang). Ira Goldklang's TRS-80 Revived Site (Engels)
Last update: 11-05-2022