HP9830 memory / was Re: Still looking for Infotek MX-30 RAM

Brent Hilpert hilpert at cs.ubc.ca
Fri Dec 5 01:50:39 CST 2014

On 2014-Dec-04, at 8:51 PM, Eric Smith wrote:
> On Thu, Dec 4, 2014 at 8:12 PM, Brent Hilpert <hilpert at cs.ubc.ca> wrote:
>> On 2014-Dec-03, at 12:12 AM, Eric Smith wrote:
>>> I'm thinking about designing a new static RAM board for the 9830 for the 2015/07
>>> retrochallenge.
>> Would this be for the sake of a fun project, or would it be practical necessity, such as need & availability of 1103's for repair?
> I've got plenty of 1103As. I have two 9830A memory boards, one good
> 4KW and one bad 2KW. I haven't found time to diagnose the bad one. But
> even if I fix that one, I'll only have 6KW. If I build my own RAM
> board, with a couple of jumpers to one of the other boards to pick up
> extra address lines, I can have 16KW.

OK, just asking as I have some NOS MIL 1103's in case it was need for such.
(MIL = Microsystems International Limited, not 'mil-spec'.)

> I also would like to design a 9880A disk emulator for it. That's more
> work than designing a RAM board, but it doesn't look too daunting.

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