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20:59, 17 June 2026 Josh talk contribs created page File:Acorn Archimedes A4000 circuit diagram (1 of 3).png (Acorn Archimedes A4000 ("Roadrunner") main PCB circuit diagram, sheet 1 of 3 (from the A3010/A3020/A4000 Technical Reference Manual). Greyscale scan, downscaled. Source: The Centre for Computing History (Chris Whytehead collection).)
20:59, 17 June 2026 Josh talk contribs uploaded File:Acorn Archimedes A4000 circuit diagram (1 of 3).png (Acorn Archimedes A4000 ("Roadrunner") main PCB circuit diagram, sheet 1 of 3 (from the A3010/A3020/A4000 Technical Reference Manual). Greyscale scan, downscaled. Source: The Centre for Computing History (Chris Whytehead collection).)