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Items marked '++' will not fit in the socket of Series 1 RPC 600 machines Purchase 64 MB EDO SIMM for Series 2 or 3 RiscPC or A7000+. Purchase 64 MB EDO SIMM for any RiscPC or A7000+. Purchase 128 MB EDO SIMM for any RiscPC or A7000+. Purchase two 64 MB EDO SIMMs for Series 2 or 3 RiscPC or A7000+, total 128MB. Purchase two 64 MB EDO SIMMs for any RiscPC or A7000+. Total 128MB. RiscPC VRAM
Prices include UK carriage. Please add £1.50 outside UK. Purchase 1 MB VRAM for RiscPC. Purchase 2 MB VRAM for RiscPC.. All VRAM is suitable for fitting to any RiscPC. Note that some early Acorn VRAM, especially 1Mb units, is not suitable for use in Strong ARM machines. Risc PC 600 RAMThe early RiscPC 600 machines were fitted with SIMM sockets which were higher than on more recent machines so mamy modern double sided SIMMs won't fit. In particular this applies to 32 Mb FP and you will need to fit High Clearance (HC). If in doubt check the model number in the centre rear of the motherboard. If this is 0197.000 you need HC, if it's 0197.100 or 1208.000 you don't. All RiscPC 600 motherboards with an 0197 number were fitted with capacitor C32. This was intended to improve stability with large amounts of RAM, but when larger SIMMs appeared (they didn't exists when the RiscPC was launched) it was found to have exactly the opposite effect. If you intend ti fit 64 Mb SIMMs you should therefore remove this capacitor. It's a small surface mount device, and is located as shown below. ![]() It's easily removed using a normal soldering iron but if you have any doubts about your ability to do this then don't touch it. If you mess it up you could damage the motherboard. If you don't have a friend you can trust then most TV repair shops would do it for a few pounds ![]() This web site © APDL 2009. Artwork produced using DrawWorks XL |