26 Mar
2015
26 Mar
'15
4:41 p.m.
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