Indeed. As a matter of fact there's a lot more to it in an M100: not only is the pinout substantially different and the required signals are not even all directly available, but even the pin spacing is not standard. For an M100 you definitely need an adapter with some extra logic in addition to the RAM chip.
m ----- Original Message ----- From: "Ken Pettit" <[email protected]> To: <[email protected]> Sent: Friday, March 09, 2018 9:11 PM Subject: Re: [M100] 8K RAM Chip > All, > > Those $3 chips work fine in the Model 102, but I believe the pinout for > M100 RAM expansion is slightly different and doesn't plug in directly. > I would have to double check, but I recall the SRAM chips were always on > a carrier PCB to remap the pinout. > > Ken > > On 3/9/18 6:07 PM, Peter Vollan wrote: >> Wow, a quick check reveals a 8kX8 SRAM on ebay for $3. Didn't those >> "memory modules" cost about $30? >> >> >> On 9 March 2018 at 17:57, Chris Kmiec <[email protected]> wrote: >>> Great, I'll go looking on the intrawebs :) >>> >>> You don't happen to have another REX, do you? :) >>> >>> Chris >>> >>> On Fri, Mar 9, 2018 at 7:01 PM, Fugu ME100 <[email protected]> wrote: >>>> The chips are available they are standard 8Kx8 SRAM. Should be able to >>>> find some on line. >>>> >>>> Unfortunately the QUAD is only for the Model 100, it will not fit the 102. >>>> >>>> Congratulations on your new addition :) >>>> >>>> From: M100 <[email protected]> on behalf of Chris Kmiec >>>> <[email protected]> >>>> Reply-To: <[email protected]> >>>> Date: Friday, March 9, 2018 at 4:33 PM >>>> To: <[email protected]> >>>> Subject: [M100] 8K RAM Chip >>>> >>>> Are these available anywhere, or do I have to find a donor system? Just >>>> got a like-new 102, but no memory expansion. >>>> >>>> I'm assuming QUAD is no longer being made/sold? >>>> >>>> Thanks! >>>
