8-bit acorn hardware • APTL Sidewise ROM/RAM - Schematic Diagram (Reverse Engineered)

Hello.

I have reverse engineered the APTL Sidewise ROM / RAM (1038, iss4) PCB to produce a schematic. Please find attached.

Comments & errata welcome.

100% my own interpretation of this design, hence errors expected etc, E&OE

I have also copied the PCB.
Andy

ATPL Sidewise ROM_&_RAM.pdf

Statistics: Posted by underwurlde — Thu Dec 18, 2025 6:36 pm

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