21 Jan
2005
21 Jan
'05
11:46 p.m.
Imlac PDS-1's used third-party memory modules. There are at least two
vendors.
The Imlac Sellam has uses what Imlac called MEM-1, and it has a large
cannon connector on the memory backplane.
My Imlac used MEM-2, where all the connections to the processors
are made with wire-wrap.
MEM-2 core modules don't have parity bits.
----- Original Message -----
From: "Ethan Dicks" <ethan.dicks(a)gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Thursday, January 20, 2005 5:16 AM
Subject: Re: Imlac PDS-1 simulators?
On Sat, Jan 08, 2005 at 09:51:20AM -0600, Tom Uban
wrote:
Nice pix, especially http://www.ubanproductions.com/Images/imlac11.jpg
It bears a striking resemblance to the core stack in an PDP-8/L or
PDP-8/i (those, of course, are either 4096x12 or 4096x13, depending on
parity. Even the fingers look like DEC spacing.
I am unfamiliar with the Imlac line... why would there be such
similarities? Dataram already have something handy?
-ethan
