Spares and components for RISC OS computers
[ Floppy drives ]
[ IDE interfaces ]
[ Video cards ]
[ Backplanes ]
[ Network cards ]
[ Second Slice ]
[ RiscPC Feet ]
[ Power Supplies ]
[ PC Cards ]
[ CMOS battery ]
RISC OS 3.7
If you are still running RISC OS 3.5 on your RiscPC or RISC OS 3.6 and you want to fit a Strong ARM processor then you need to upgrade to RISC OS 3.7 or better. Ideally you should get RISC OS 4, but for the 'pecuniarily challenged' we can offer RISC OS 3.7 ROMS plus a CD containing a copy of the hard drive build for just £5.
In case you don't have a CD drive on your RiscPC the data is also supplied on the CD in several zip files which fit on 1.44MB floppies so you can transfer them from almost any computer with a CD ROM and floppy drive.
Price £5 plus £2 UK carriage, £3 outside UK.
Replacement floppy drives
- Hi density (1.6MB) floppy drive to fit A7000, A7000+, RiscPC, A5000, A4000. These drives are modified to work on early RiscPC 600 and other machines where standard drives with ID set to 1 do not work.
Price £6.50 plus £2 UK carriage, £4.50 outside UK.
- Double density (800K)replacement drive for A3000. Price £9.50.
Please add £2 UK carriage, £4.50 outside UK.
- RiscPC 600 special floppy drive cable
This is a replacement floppy drive ribbon cable which allows the RiscPC 600 to use a standard PC floppy drive with the drive ID set to '1'. Normally with the RiscPC 600 the drive ID must be '0' and altering this often requires soldering on the drive PCB. This special cable lets you use almost any PC drive. Price is just £4.20 including UK carriage. Please add £1.50 outside UK.
RiscPC Second Slice
Second slice for RiscPC, complete with 4 slot backplane, screening strip and longer locking pins.
We can supply these for just £39. Note that these may not be new but will be in 'as new' condition with no knockouts removed. Please add £9.50 UK carriage. Outside UK please ask for carriage costs.
Purchase RiscPC 2nd Slice - UK carriage
Backplanes
You will need a backplane to fit expansion cards (not network cards) into a RiscPC or A7000. Many models of RiscPC had these fitted as standard but some do not. A single slice machine can only have a two slot backplane but a machine with two or more slices can have a four slot backplane (although you can still fit a two slot if you don't want to fit more than two expansion cards). Note that an A7000 or A7000+ can only take a single slot backplane and you can't fit both a backplane and an internal CD ROM drive in these machines.
- Two slot backplane for RiscPC - £7 plus £1 UK carriage, £2 outside UK.
- Four slot backplane for RiscPC - £24 plus £2 UK carriage, £3 outside UK.
Network cards
i-cubed 10baseT network cards (may have 10base2 connector as well) for the RiscPC, A7000 or A7000+. These are secondhand but with recent firmware.
Price is just £29 including UK carriage. Please add £3 outside UK
Acorn 10baseT network cards manufactured by ANT for RiscPC, A7000 and A7000+. These are secondhand but with recent firmware.
Price is just £21 including UK carriage. Please add £3 outside UK
Risc PC PC cards
We usually have various 486 and 586 second processors for the RiscPC in stock. These range from the early 486 SLX-40 up to 133 Mhz 586.
The 486-40 is ideal for running old DOS programs, especially games. Since this is equivalent to the fastest processors in general use at the time Windows took over as the standard PC OS almost any pre-Windows programs will run at least as fast as originally intended, sometimes much faster. For use with Windows you really need at least a 486-100 or 586 processor. This will run Windows 3.1 at adequate speed, Windows 95 or 98 is just about adequate, but anything later is painfully slow. You can't run Windows NT on any PC card.
Acorn's original !PC software is availabe from Chris' Acorns. If you want to run Windows on a PC card or with versions of RISC OS after 3.7 you really need PCPro from Aleph One. This used to be commercial software costing over £60 but has now been released under the GPL and version 3.08, which is also RISC OS 6 compatible, is available for download here.
Please add £3 UK carriage if not purchased with a computer, £4.50 outside UK except 586 133 where carriage is £5 UK, £7 outside UK.
If you are ordering more than one PC card please contact us first to ensure that we have stock of the type you want.
- 486 SLX 40 PC card, £9, (£5 when purchased with a computer).
- 486 DX 66 PC card, £18, (£15 when purchased with a computer).
- 486 DX 100 PC card, £25, (£20 when purchased with a computer).
- 586 100 PC card, £33, (£30 when purchased with a computer).
- 586 133 PC card, £45.
RiscPC feet
A set of four feet for the RiscPC to allow it to stand on it's side like a 'tower' PC so it takes up much less desk space. Price only £4.50 including UK carriage. Please add £2 outside UK.
RiscPC/A7000 replacement battery
A replacement CMOS battery for most models including the RiscPC, A7000, A7000+, A3010, A3020, A3000, A4000 and A5000. This is a rechargeable cell and if your computer is not retaining all its CMOS settings you will need to replace it.
If your computer is getting on a bit you should inspect the battery regularly even if it does appear to be working properly as they can leak when old. On a RiscPC it's the silver object about the size of a couple of £1 coins stuck together on the right hand edge of the motherboard just behind where the leads to the speaker and LED's plug in. If there's the slightest sign of green fur on it replace it at once. Any leakage is very corrosive and can quickly damage the motherboard beyond repair.
The original battery is nickel cadmium, the replacement in nickel-metal hydride (NiMH), which is much less toxic. It also has about 50% higher capacity. It is soldered in place so you will need to remove the motherboard. If there's any sign of leakage from the old battery wash the area thoroughly in a 50% solution of vinegar and water and then rinse in clean water. The leakage is alkaline and the mild acid of the vinegar will help neutralise it.
Replacement CMOS battery costs £3.20 plus UK carriage £1 for one, 50p for each additional battery. Outside UK please add £2 for the first, 80p for each additional battery.
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