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Acorn Universal Second Processor Unit: Revision history

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2 October 2026

  • curprev 04:3704:37, 2 October 2026 Josh talk contribs 8,857 bytes +8,857 New page: Universal Second Processor Unit (ANC21) from Acorn leaflet APP111 and Chris's Acorns; fitting, requirements, co-processor checks from the Master service manual
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