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Acorn Risc PC circuit diagrams 7 sheets of A1 (S/H)

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Product Title: Acorn Risc PC circuit diagrams 7 sheets of A1 (S/H)
Manufacturer/Publisher: Acorn Computers
Stock Code: ACO-RISC-PC-SD
QuickCode: 20970
Format: BBC Hardware
Product Group: 8 bit Computing: Hardware
Condition: Used
Availability: Usually available from stock

Description:
New copies of Acorn RiscPC Circuit Diagrams, set of 7 A1 sheets

Description:
Set of seven Acorn RiscPC Circuit Diagrams.
Digital 600DPI copies from a folded Acorn original so some imperfections resulting from the folds (see examples in photos).

They are named as 'MEDUSA', Acorn's project name for the RiscPC before launch.

Sheet 1/7: IOMD, CPU (both slots), RISC OS ROMs, IIC, Reset circuitry, Battery backed RAM/RTC
Sheet 2/7: Combo chip, IDE interface, Serial & Parallel ports, Floppy, Keyboard & Mouse interfaces, Front panel LEDs
Sheet 3/7: DRAM SIMM, & VRAM interfaces
Sheet 4/7: Expansion bus & Network interfaces, Upper I6 buffered data latching, S-Space/Network decoding
Sheet 5/7: VIDC20, VC0 Circuitry, GENLOCK interface, Video connector, AUX Audio connectors, Stereo headphone socket, Internal speaker, IIS sound interface
Sheet 6/7: Power & Ground list, Decoupling details, Spare gates, Power in (from PSU), Clean VCC
Sheet 7/7:Sheet interconnections summary

Paper Size: A1, approx. 59x84cm

Price: £32.00 no UK VAT to pay!
Free UK delivery on orders of £40 or more! (exceptions apply)

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Established 1982

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Items on special offer are while stocks last and may be time limited.
Items marked S/H are secondhand and have a 3 month warranty
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Last updated: Fri, 18 Jul 2025