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:
Part 4 Sorbus runs Wozmon, Apple 1 Basic, MCP
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Sorbus computer (part 2)
Soldering the PCBs
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The Sorbus computers
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Thank you Sven for th...