[time-nuts] OT: Wanted - Racal 1992 or 1998 Custom IC.

[paul swed]

David I do not.
But what you have is a moto 6805 series micro.
Looking at the 1978 moto book will guess the other chip is a 6805f2
The key thing is this has ram and 1.1KB of rom plus 20 io lines.
Just a guess

On Fri, Sep 17, 2010 at 1:15 PM, David C. Partridge <
david.partridge at perdrix.co.uk> wrote:

> I'm looking for a custom IC used in the Racal 1991/2 and 1998/9 counters.
>  Amongst other things it is used to generate the CPU clock.   I know it's
> dead as I've tested it by sticking it into a known good counter.
>
> In the 1992 it is IC18 and in the 1998 it is IC9 and in either case the
> Racal part number is 22-8403 - it's a 40 pin wide DIP.
>
> In both cases it is next to the MPU (or CPU) which is an MC146805E2, which
> I may also need.
>
> Does anyone have an otherwise junker counter with these parts available?
>
> Regards,
> David Partridge
>
>
>
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