[Info-vax] MicroVAX 3100-40 RAM

[David Froble]

urbancamo wrote:
> On Feb 26, 11:40 pm, Darren Clark <BiggRan... at tds.net> wrote:
>> Does anybody have any 2 extra MicroVAX 3100-40 RAM SIMM floating around
>> (good or bad)?
>>
>> I've reverse engineered one out of my MicroVAX after realizing that it's
>> not a standard 72 pin SIMM, but an 80 pin SIMM. I've pinned it out and
>> it's somewhat compatible with a 36 bit 4MB 72 pin SIMM, minus a buffer
>> for the inputs and 8 extra (unused) pins. I've contemplated making up 2
>> custom 80 pin SIMMS with a buffer and 72 pin SIMM socket, but that's a
>> lot of work if someone has some extra's they're willing to let go of.
>>
>> If they're bad, I have the equipment to remove and replace individual
>> chips on it, and have 100's of 4x1024K and 1x1024K memory chips floating
>> around.
>>
>> Also if anybody is interested I can post the pinout and schematic somewhere.
>>
>> Darren Clark
>> East of East Lansing, Michigan, USA.
> 
> Darren,
> 
> Does that bear any relation to the memory in a VAXstation 3100 ?

If you're looking for 4 MB SIMMs, I most likely have some sitting around.  I've also got 
16 MB SIMMs, bot probably won't let them go since I have some VAXstation 4000 systems that 
I'm either using, or keeping for backup to the one I'm using.

If interested, let me know.