This is a replica PCB made with KiCAD.
This board is not a 100% accurate replica, because the added directly on the PCB a few updates published later by Elektor :
- a fix for memory decoding needed for the expansion board
- the main decoupling capacitor C2 was on wrong side of S25 (activate display) which could reset the computer
- a simple reset circuit with a resistor and a capacitor
- Also replaced the 2708 EPROM by a 2716, which avoid the need of a hard to find EPROM & EPROM programmer, and has the big benefit of reducing the required power supplies from 3 (+5,-5,+12) to only +5V.
More details, also yet untested Interface card and other cards at his github page.
See also:
KIM-1 Circuit poster
With every KIM-1 came a large poster with the Circuit Diagram. The circuit stayed the same from 1975 to 1977, but there ...
A 2K Symbolic Assembler for the KIM-1
A 2K Symbolic Assembler, by Robert Ford Denison. An assembler and editor in 2K!
This small program allows to assemble...
The Rockwell KIM-1
Once in a while I hear a myth on the internet about Rockwell manufactured the KIM-1. That myth needs to be debunked.
...
Dungeons And Dragons Dice Simulator For The KIM-1
In Compute! Issue 13, June 1981, a small program is published. It runs on an unexpanded KIM-1, showing a random number a...