Jeff Tranter's Blog

The original Superboard II was sold as a populated circuit board with no case or power supply. I owned one, and made a case out of wood and ...

Here are some notes on design and theory of operation of the Superboard /// . This was gleaned from looking at the circuit and I may have go...

JMON  is a machine language monitor program I wrote for the Briel Replica 1, a replica of the Apple 1. It was only natural to want to port i...

My latest retrocomputing project is building the Superboard /// computer kit by Briel Computers. It is a replica of the Ohio Scientific Su...

While waiting for my Briel Superboard III kit , I was reminded of a book that I blogged about last year. The Visible Monitor program in t...

The first computer I owned was an Ohio Scientific Superboard II. Bought in 1980, it was the only reasonably complete computer on the market...