7 Mar
2005
7 Mar
'05
11:40 p.m.
Hi,
I'm trying to figure out what the difference between a PDP-11/55 and a
PDP-11/t55 is (other than the obvious "t").
Anyone out there know?
Thanks.
--
TTFN - Guy
8 Mar
8 Mar
5:54 p.m.
I used to own an 11t55.
It has fast bipolar memory, and a dual unibus configuration.
----- Original Message -----
From: "Guy Sotomayor" <ggs at shiresoft.com>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Tuesday, March 08, 2005 2:40 AM
Subject: Difference between 2 PDP11 models
Hi,
I'm trying to figure out what the difference between a PDP-11/55 and a
PDP-11/t55 is (other than the obvious "t").
Anyone out there know?
Thanks.
--
TTFN - Guy
10 Mar
10 Mar
2:49 p.m.
On Tue, 2005-03-08 at 20:54 -0500, Bob Shannon wrote:
I used to own an 11t55.
It has fast bipolar memory, and a dual unibus configuration.
Yea, so does the 11/55 (actually the 11/45 and 11/50 also have a dual
unibus config...since they're all based upon the 11/45). So I ask
again, what's the diff?
Thanks.
----- Original Message -----
From: "Guy Sotomayor" <ggs at shiresoft.com>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Tuesday, March 08, 2005 2:40 AM
Subject: Difference between 2 PDP11 models
--
TTFN - Guy
Hi,
I'm trying to figure out what the difference between a PDP-11/55 and a
PDP-11/t55 is (other than the obvious "t").
Anyone out there know?
Thanks.
--
TTFN - Guy
14 Mar
14 Mar
11:11 a.m.
On Mar 10, 2005, at 3:49 PM, Guy Sotomayor wrote:
On Tue, 2005-03-08 at 20:54 -0500, Bob Shannon wrote:
I ran across this the other day while perusing a copy of the option
module list. [1]
These letter designations define different "pre-packaged" systems.
The "11T55" (actually all 11T's) are equipped with 1 or more rk05's.
For example, the description of an 11T55-BA is:
11/55-BA, FP11-C, RK11J-DE, RK05J-AA, 120V 60HZ.
The 11/55-BA has an LA36 and an 11/55-CA;
The 11/55-CA has
2 - MS11-CC (Controller for bipolar memory)
8 - MS11-AP (4k bipolar memory cards)
KB11-D, DL11-W, KT11-CD, and M9312.
An 11/55-CE is the above without the bipolar memory.
Mike
[1] This is a PDF file of the april 1983 option module list. It's on
bitsavers
in the dec/modules directory. And it's almost 85MB long.
I used to own an 11t55.
It has fast bipolar memory, and a dual unibus configuration.
Yea, so does the 11/55 (actually the 11/45 and 11/50 also have a dual
unibus config...since they're all based upon the 11/45). So I ask
again, what's the diff?
Thanks.
7540
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bshannon＠tiac.net -
ggs＠shiresoft.com -
mcesari＠comcast.net