AT89C51-8051-8031 SBC
bprosman Inspired by an old Elektor (Dutch elektronics magazine) design. I designed a new Eurocard form factor design, with buffered outputs , RAM , EEPROM so that it can also fit…
December 2022
NDR School television episodes (26)
0. Microelectronics - Introduction of the NDR "Klein" computerThomas Naumann and Rolf-Dieter Klein introduce the capabilities of the NDR "Klein" computer and the contents of the 26 episodes. (In German).
RetroSys2019 references
NDR Kleincomputer by Rolf-Dieter Klein (For those who speak German) : http://www.ndr-nkc.de/compo/index.htm RC2014 Site : https://rc2014.co.uk/
The Acorn Atom – Introduction
The Acorn Atom was my first “Personal computer”, a computer with a real keyboard, and video display (well actually an old portable B&W TV). All I could effort was the…
Stripping Atoms
As my 2 Acorn Atom boards were in a quite bad state, and I got a hold of a desoldering station that worked pretty well I decided to strip both…
Retrosys2019 Introduction
In 1983 I bought my first book about microprocessors during a summer holiday in Austria, it was titled “Microcomputer selbstgebaut und programmiert” (“Microcomputer self-built and programmed” in English) written by…
Welcome to my website
This site has been dedicated to ~1980’s Home- and Game Computers I own, Single Boards Computers (SBC’s) I either built or bought, as well as (Fidelity) chess computers, home-brew hardware…
Retrosys2019 Backplane Board
This board was designed in 2018 and also used for some of my other other projects. It has been manufactured , tested (duh, what can go wrong on a plain…
Creating a composite video signal output on the P2000
The video modulator in the P2000 works on basis of a TEA2001 PAL Color Encoder IC.