Storing computers and new clock module for RiscPC, A5000 etc.

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Announcement from Chris Evans of 4D, 6th September, 2013

CJEMicro’s/4D are pleased to announce a replacement clock module for the RiscPC, A7000+, A7000, A5000, A4000, A3020, A3010 and A3000.

Failing Real Time Clocks (RTCs) and CMOS memory is a big problem for many earlier Acorn computers. Leaking batteries can cause extensive damage, but when the damage is limited to affecting the clock then our module can provide the solution. Many people, like ourselves, have put their RiscPCs etc. into storage, removing the battery first to avoid any leaks. Unfortunately it has been found that if no battery is connected for several months the clock may fail to start again when a new battery is fitted.

The Module replicates completely the on board PCF8583 RTC system so no additional software is required as the operating system will automatically recognise the clock and CMOS RAM.

  • Podule version for A5000, A7000*, A7000+* and RiscPC (also A3000 if external podule connector used): £26 + £2 P&P
  • MiniPodule Version for: A3000, A3010, A3020 and A4000: £26 + £2 P&P

If all the podule slots are in use on your RiscPC or A5000 we can supply a two/four slot RiscPC backplane or an A5000 backplane with a module attached.

For details of our recommendations for storing computers and more information on the replacement clock module please see our blog posting entitled Leaking Batteries, Dead Clocks, Storing computers.
Chris Evans

*The A7000 & A7000+ has significant limitations regarding fitting upgrades, and users should contact us for advice.