WTD: S100 Static RAM card

[Mike Stein]

Hi Philip,

Just going through some old emails; did you find a suitable card?

m
----- Original Message ----- 
From: "Philip Lord" <philip at neoncluster.com>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
Sent: Friday, March 27, 2015 12:16 AM
Subject: Re: WTD: S100 Static RAM card


Well, maybe I’m too cheap, but some of the ebay prices just seem crazy. Hopefully I can find something at a more reasonable price. If not, then I guess I’ll have to bite the bullet. Those Econoram boards look nice and simple, but those RAM16 and RAM 17 boards look like the real deal.

Andrew’s board certainly looks nice, but if it did need modifying to work in the IMSAI, I’m guessing I wouldn’t have the skill to do it. Unfortunately.
Also everyone has their own philosophy on retro computing, mine is that I’d actually like to keep the systems as close to “period" as possible. Putting a modern RAM/ROM board in the IMSAI doesn’t fit my philosophy. 

Thanks again for all the suggestions.



> On Mar 27, 2015, at 12:41 PM, Mike Stein <mhs.stein at gmail.com> wrote:
> 
> Maybe you could adapt one of John & Andrew's boards?
> 
> http://s100computers.com/My%20System%20Pages/PROM%20Board/PROM%20Board.htm
> 
> m
> ----- Original Message ----- From: "Philip Lord" <philip at neoncluster.com>
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
> Sent: Thursday, March 26, 2015 6:30 PM
> Subject: Re: WTD: S100 Static RAM card
> 
> 
> Hi Mike,
> Well it’s certainly nice to know the Cromemco is also another good option if I want to try DRAM again, but I am feeling that a good SRAM card maybe a safer option, and possibly easier for me to repair if anything goes wrong.
> 
> Thanks for your thoughts
> 
>> On Mar 27, 2015, at 10:32 AM, Mike Stein <mhs.stein at gmail.com> wrote:
>> 
>> FWIW I've never had any problems with Cromemco 64KZ-II DRAM cards.
>> 
>> m
>> 
>> ----- Original Message ----- From: "Philip Lord" <philip at neoncluster.com>
>> To: <publicmail at jwsss.com>; "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>> Sent: Thursday, March 26, 2015 5:19 PM
>> Subject: Re: WTD: S100 Static RAM card
>> 
>> 
>> Hi Jim, thanks for the info.
>> Always good to know what people think are good cards, and what aren’t.
>> 
>> Cheers
>> 
>> 
>>> On Mar 27, 2015, at 10:13 AM, Jim Stephens <jws at jwsss.com> wrote:
>>> 
>>> 
>>> 
>>> On 3/26/2015 1:34 PM, Philip Lord wrote:
>>>> Hi all,
>>>> I’ve been struggling getting a 64k Dynamic RAM card back up and working in my IMSAI 8080. In fact I’m giving up on the DRAM card in this system and have decided to start looking for a SRAM card that can get the IMSAI up to 56k.
>>>> 
>>>> In terms if SRAM cards, I presently have:
>>>> 
>>>> 2 x Problem solver RAM16 cards - both seem to be working.
>>>> 2 x 8K RAM cards - both seem to be working.
>>>> 
>>>> Less cards generating heat, and putting stress on the old power supply is obviously best, so I’d be looking for either:
>>>> 
>>>> - 1 x 16k SRAM card (for a total of 4 RAM cards (3 x 16k + 1 x 8k) in my system). A PSS RAM16 would be preferred for sake of consistency, but obviously not crucial.
>>>> - 1 x 32k SRAM card (for a total of 3 RAM cards (1 x 32k, 1 x 16k + 1 x 8k) in my system)
>>>> - 1 x 64k SRAM card that can have the last 8k bank turned off
>>>> 
>>>> I would love to hear from anyone with one of the above cards who would be willing to pass it on.
>>>> 
>>>> Much thanks for your time.
>>>> 
>>>> Best regards
>>>> 
>>>> Philip
>>> I do not have any to pass on, but in the day, you couldn't do better than IMS 16k's  I also had a Tarbell CPU with 256k of Dram, and that was the only dynamic ram I ever had in an S100 system.
>>> 
>>> Also if you can find Compupro, I suspect it is as likely to be perfect as the IMS boards are.
>>> 
>>> Thanks
>>> Jim
>> 
>