Mysterious S100 SRAM card

Brent Hilpert hilpert at cs.ubc.ca
Fri Jul 24 12:53:34 CDT 2015


On 2015-Jul-24, at 10:25 AM, Mike Loewen wrote:
> On Fri, 24 Jul 2015, Brent Hilpert wrote:
> 
>> On 2015-Jul-24, at 9:02 AM, Bob Rosenbloom wrote:
>>> On 7/24/2015 2:16 AM, dave at 661.org wrote:
>>>> On Fri, 24 Jul 2015, dave at 661.org wrote:
>>>> 
>>>>> Can someone identify this S100 SRAM card? I can tell that it's a 16K SRAM board made up of MM2114 chips. Virtual beer to the first person who guesses where I found it.
>>>> 
>>>> Whoops!  How about if I show you the picture?
>>>> 
>>>> https://www.flickr.com/photos/32548582@N02/19969394361/
>>>> 
>>>> 
>>> It looks very close to a California Computer Systems board, possibly a different rev.
>>> 
>>> http://www.s100computers.com/Hardware%20Folder/CCS/16K%20RAM/16K%20RAM.htm
>> 
>> 
>> It's closer to the JTM 16K Static RAM, which must somehow have been related to CCS.
>> 
>> 	http://maben.homeip.net/static/S100/JTM/
> 
>   If you take a look at the manual for the CCS board on the s100computers.com site, you'll find a Revision B diagram that appears to be an exact match (page 39):
> 
> http://www.s100computers.com/Hardware%20Manuals/CCS/California%20Computer%20Systems%202016B%20RAM%20Manual.pdf



Right, looks like the mismatch is actually between the photo on the S100computers site and the manual on the same site,
that is, the manual matches the OP's board but the photo is a different rev.



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