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 < [email protected]> 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 > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
