Author Archives: hanso
Radio Bulletin articles OCR’ed and translated
From 1977 to 1986 I was heavily involved in the Dutch magazine Radio Bulletin. The magazine started in the time of the then new radio long before I was born!
I started writing about my interest in electronic since 1970. And in 1977 the magazine (Dick de Boer!) introduced me to the KIM-1, and that enhanced my joy with electronics with computing.
At the university in these days electronics and computer science also came together.
We have published many articles around the KIM-1. Alas in Dutch and only on paper. Published on this website, see the Radio Bulletin pages.
Many of the articles deserve a wider public, the KIM-1 and its clones are used by a broad international public.
So I started a new project: translate the articles to English and make the software available in assembler and binary format.

See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
Teach KIM to Sing
A program to let the KIM-1 play music. Store notes and its pitch in memory and listen to it.
Published in the Byte Book of Computer Music, 1979. Written by Peter H. Myers.
The listing is converted to MOS Technology standard assembler source. The resulting code compared to the publsihed code.
Here and archive with source and papertape binary.\

See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
MICROCALCULATOR MODEL-85
A board that serves as a calculator accessible via a parallel 8 bit port, e.g. from a KIM-1. Send commands and read the calculated results.
Made by Artisan Electronics in 1977.
Acquired August 2026, as built in a KIM-1 with KIMSI system.
Page updated September 2026 with scans and KIM-1 source of the original manual and brochure.
See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
Microprocessor programming and applications for scientists and engineers (Richard R. Smardzewski
Book added to the 6502 KIM-1 AIM 65 books pages:
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Microprocessor programming and applications for scientists and engineers (Richard R. Smardzewski |
See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
Apple 1 Replica TE PAL version
User ExPLIT on the German forum Verein zum Erhalt klassischer Computer e.V.
has build an Apple 1 Replica 1 TE from the design files by Vince Briel.
He was not so happy with the NTSC composite signal of this Replica 1. So he reworked the source files of the Propeller to support PAL formatted video.
The thread on the design is here.
EXPLIT created a github archive as a fork of the github from Vince Briel, with original and PAL adapted source files.
More on the Apple 1 Replica’s here.
This is how the PAL output looks: sharp, no artefacts, black on white:

Photos of the build by EXPLIT:




See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
My KIMSI
My KIMSI
I acquired a KIMSI in August 2026. It was build into a plexiglas/aluminium case, with a KIM-1 (Rev G) and a ‘microcalculator board’. I took the system apart, no room to store the big ugly thing.









See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
A boxed Synertek VIM-1
A boxed VIM-1 acquired in August 2026. More SYM-1 photos here.





See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
SYM-2 prototype
In August 2026 I acquired an boxed engineering SYM-2 prototype. It comes with two large circuit diagrams illustrating the design.
Next photos by Paul Schroeter.
See also:
A demo of the new facilities in the KIM-1 Simulator 2.2.1
KIM-1 connectors: beware the Chinese cheap variants!
Magazines: Compute! and Compute II
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
Jolt with 4K images
With thanks to Jonathan Chapman of Glitchworks who found a Jolt system, here images of a Jolt with 4K memory, an experimenters board and the power supply.















