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 Please add £2 UK carriage, £5 outside UK.
• Double density (800K)replacement drive for A3000.
  Price £8.50 Please add £2 UK carriage, £5 outside UK.

  Backplanes

You will need a backplane to fit expansion 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 ywo 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 - £19
• Four slot backplane for RiscPC - £27
• Single slot backplane for A7000 or A7000+ - £14

In each case the price includes UK carriage. Please add £2.50 outside UK.

  Network cards

We usually have stocks of 10 base T network cards for the RiscPC or A7000. Normally these are I-cubed with recent firmware. These cost £25 or just £18 when purchased with a computer.

  Risc PC PC cards

We usually have various 486 and 586 second processors for the RiscPC in stock. These range from the early 486 SXL-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 a 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.

If you order a PC card with any RiscPC we will install it with driver software and a small PC "partition" with DOS installed. If you purchase it separately we will supply the "basic" driver software on floppy disc and you will need to obtain the OS (DOS or Windows).

If you want to run Windows on a PC card or with versions of RISC OS after 3.7 you really need the PCPro driver software from Aleph One. This used to be commercial software costing over £60 but has now been released under the GPL and is available for download from riscos info

Prices are -

Card type	With a computer	Purchased separately
486 SLX 40	£5	£9
486 100 DX	£15	£20
586 100 Mhz	£25	£35
586 133 Mhz	£35	£45

Please add £3 UK carriage if not purchased with a computer.

It is best to contact us before ordering a PC card to ensure that we have the type you want available.

  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 £3.50 including UK carriage.
Please add £1 carriage outside UK.

  RiscPC/A700 replacement battery

A replacement CMOS battery for the RiscPC, A7000, A7000+ and A5000. This is a rechargeable cell and if your computer is not retaining all its CMOS settings, including the clock, then you will need to replace this.

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. 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 battery is soldered in place so you will need to remove the motherboard to do it. If there's any sign of leakage from the old battery wash the area 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 £3 including UK carriage. Please add £1 airmail outside UK

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