A 32kb Memory Expansion Board for the microKIM

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As you may know, I own a microKIM (KIM-1 clone) Single Board Computer (SBC). 

It is a trip down memory lane to work with the incredible simplicity of what was once “top of the bill” technology.

The original KIM-1 I once owned had 1kb of RAM and the microKIM has 5kb RAM. That is a big improvement but even so it can be better. As Vincent Briel (the designer of the microKIM) made a career change, his company “Briel Computers” is no longer in business and you can no longer buy his 32kb memory expansion board. 

And so it came to pass that I had to design a memory card by myself. With this 32kb memory expansion board the total amount of RAM will be a whooping 37kb! More than enough to run a BASIC interpreter (and more) and in combination with my “digital Tape Recorder” I now have a “state of the Art” vintage computer!

The overall costs for the complete board are ~€ 29,-. The most expensive part being the 40 pin connector (~€8,-)!

If you want a microKIM Liu Ganning made and sell’s a microKIM clone “PAL-1” for only $70,- !!!

My ADW2101 board fits perfectly on the PAL-1 as the extension connector is the same as on the microKIM. Only the position is different.

This entry was posted in Arduino, Computer, ESP8266, Hardware, KIM and tagged , , , , , , . Bookmark the permalink.

5 Responses to A 32kb Memory Expansion Board for the microKIM

  1. Edzard Kolks says:

    Beste Willem,

    Zijn er nog PCB’s beschikbaar (tegen betaling)?



  2. Dave Hassler says:

    I received your PCB quickly (vers. 2.0), and it was soldered together in a flash – about 20 minutes. I’ll say this: what an improvement over my home-made hard-wired card! The quality of the PCB is excellent, as well as the labelling on the board; I did not have to consult the schematic at all to build this simple and well-designed little memory card. Thanks, Willem!

  3. Dave Hassler says:

    Hi Willem. Do you have PCB gerber files for this project? I would like to build one. Thanks, Dave

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