File:Acorn A4 main board (component side).jpg

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Summary

Flatbed scan of the component side of an Acorn A4 main board (assembly 0190,260 issue 1, 4 MB), rotated to landscape and reduced to 2200 pixels wide. The surface-mount aluminium electrolytic capacitors, the RISC OS ROMs, the ARM3, MEMC, VIDC and IOC, and the flexible-cable connectors for the display, keyboard and floppy drive are all visible.

Source

https://www.chiark.greenend.org.uk/~theom/riscos/a4/img/mbtop/1184x3507.jpg, from Theo Markettos's page "Acorn A4 motherboard pictures", https://www.chiark.greenend.org.uk/~theom/riscos/a4/motherboard.html (retrieved 2026-10-01).

Author

Theo Markettos

Licence

Copyright Theo Markettos. No licence stated at source. Used for repair reference with the source credited.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:12, 2 October 2026		2,200 × 742 (276 KB)	Josh (talk \| contribs)	Upload with source and licence

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