10 Aug
2001
10 Aug
'01
4:50 a.m.
From: "Iggy Drougge" <optimus(a)canit.se>
What a shame, I can't find the 32100 in the
otherwise great "Great
microprocessors of the past and present"
How about an introduction?
Orginally, the We32000, but pretty qucikly moved to the We32100. This is
actually the CPU; there was a complete set of support chips. 10MHz, with a
later upgrade to 18MHz (still not very fast). Used in the AT&T 3B2, 3B5 &
3B20 machines, and also shows up in a number of other odd places (some AT&T
PBXs, 5ESS switch, etc.). CISC architecture, designed (supposedly) to
efficiently support C language compliation. There was a followon We32200
chip that I recall showed up in the 3B2/1000.
I've got the We32100 reference manual at home, if any has specific
questions.
AT&T carpet-bombed Georgia Tech with 3b2s when I was there (~1985), so I
used them quite a bit at the time. Actually really nice when used with the
5620 BLIT graphics terminals. I'd love to have one of those.
Ken
10 Aug
10 Aug
6:15 p.m.
Ken Seefried skrev:
From: "Iggy Drougge"
<optimus(a)canit.se>
> What a shame, I can't find the 32100 in the otherwise great "Great
> microprocessors of the past and present"
> How about an introduction?
Orginally, the We32000, but pretty qucikly moved to the
We32100. This is
actually the CPU; there was a complete set of support chips. 10MHz, with a
later upgrade to 18MHz (still not very fast). Used in the AT&T 3B2, 3B5 &
3B20 machines, and also shows up in a number of other odd places (some AT&T
PBXs, 5ESS switch, etc.). CISC architecture, designed (supposedly) to
efficiently support C language compliation. There was a followon We32200
chip that I recall showed up in the 3B2/1000.
What is the 3B1 based on, then?
And when was the 32000/32100 introduced?
--
En ligne avec Thor 2.6a.
Was ist ein Erwachsener? Ein Kind, das vom Alter aufgepumpt ist.
--- Simone de Beauvoir
6 p.m.
Ken Seefried skrev:
68010 I believe... a 68020 follow on was never released IIRC.
Bill
--
Bill Gates is a Persian cat and a monocle away from being a
villain in a James Bond movie -- Dennis Miller
bpechter@shell.monmouth.com|pechter@pechter.dyndns.org
From: "Iggy Drougge"
<optimus(a)canit.se>
> What a shame, I can't find the 32100 in the otherwise great "Great
> microprocessors of the past and present"
> How about an introduction?
Orginally, the We32000, but pretty qucikly moved
to the We32100. This is
actually the CPU; there was a complete set of support chips. 10MHz, with a
later upgrade to 18MHz (still not very fast). Used in the AT&T 3B2, 3B5 &
3B20 machines, and also shows up in a number of other odd places (some AT&T
PBXs, 5ESS switch, etc.). CISC architecture, designed (supposedly) to
efficiently support C language compliation. There was a followon We32200
chip that I recall showed up in the 3B2/1000.
What is the 3B1 based on, then?
And when was the 32000/32100 introduced?
11 Aug
11 Aug
12:11 p.m.
At 10:51 PM 8/10/01 -0500, you wrote:
In message
<898.623T1600T2555249optimus(a)canit.se>se>, "Iggy Drougge" writes:
It was also known as the Unix PC". AFIK the only difference between
the 7300 and 3B1 was the larger capacity hard drive. The larger drive was a
full height model so the top case cover was replaced with one that had a
hump in it. Many of the 7300s were modified after they were delivered
therefore many are still labeled as 7300s even though they have been
modifed to 3B1s.
Joe
What is the 3B1 based on, then?
68010 with a custom paged MMU. In a slightly different configuration,
the 3b1 was also known as the 7300. Brian L. Stuart
7:09 p.m.
In message <5.1.0.14.1.20010811170740.00ac5c60(a)mailhost.intellistar.net>et>, joe w
rites:
At 10:51 PM 8/10/01 -0500, you wrote:
There was some debate over whether the 3b1s also had a little
bit heaftier power supply to handle the full height drives.
There never seemed to be a really definitive answer, but
it seemed to me that it was the same capacity, but had a
different connection to the drive.
Brian
In message
<898.623T1600T2555249optimus(a)canit.se>se>, "Iggy Drougge" writes:
It was also known as the Unix PC". AFIK the only difference between
the 7300 and 3B1 was the larger capacity hard drive. The larger drive was a
full height model so the top case cover was replaced with one that had a
hump in it. Many of the 7300s were modified after they were delivered
therefore many are still labeled as 7300s even though they have been
modifed to 3B1s. What is the 3B1 based on, then?
68010 with a custom paged MMU. In a slightly different configuration,
the 3b1 was also known as the 7300.
12 Aug
12 Aug
3:16 a.m.
At 11:09 PM 8/11/01 -0500, Brian wrote:
In message
<5.1.0.14.1.20010811170740.00ac5c60(a)mailhost.intellistar.net>et>,
joe w
rites:
I think you're right. However I think a lot of 7300 also got
retrofitted with the beefier supply. I *think* there was also an improved
fan that was released at about the time. But I don't remembef if it was
part of the modified PS or if it was a separate mod. The old fans were
notorious for stopping and allowing the system to overheat and burn itself up.
Joe
At 10:51 PM 8/10/01 -0500, you wrote:
There was some debate over whether the 3b1s also had a little
bit heaftier power supply to handle the full height drives.
There never seemed to be a really definitive answer, but
it seemed to me that it was the same capacity, but had a
different connection to the drive. In message
<898.623T1600T2555249optimus(a)canit.se>se>, "Iggy Drougge" writes:
It was also known as the Unix PC". AFIK the only difference between
the 7300 and 3B1 was the larger capacity hard drive. The larger drive was a
full height model so the top case cover was replaced with one that had a
hump in it. Many of the 7300s were modified after they were delivered
therefore many are still labeled as 7300s even though they have been
modifed to 3B1s. What is the 3B1 based on, then?
68010 with a custom paged MMU. In a slightly different configuration,
the 3b1 was also known as the 7300. 
13 Aug
13 Aug
6:48 a.m.
68010 with a
custom paged MMU. In a slightly different configuration,
the 3b1 was also known as the 7300.
It was also known as the Unix PC". AFIK the only difference between
the 7300 and 3B1 was the larger capacity hard drive.
8374
days inactive
8377
days old
7 comments
6 participants
participants (6)
-
blstuart＠bellsouth.net -
ken＠seefried.com -
korpela＠ssl.berkeley.edu -
optimus＠canit.se -
pechter＠bg-tc-ppp721.monmouth.com -
rigdonj＠intellistar.net