3 Aug
1999
3 Aug
'99
3:50 a.m.
I've been trying to bring my old RX02 drive back to life, with little
success.
I just received a good bootable floppy, and get the same results as with all
my old disks, so now I'm looking for hardware problems.
On a PDP-11/03, With RXV21 controller, and an RX02 drive, the RX02
initializes, attempts to read the boot block, and crashes to ODT at 000600.
In examining what my system reads as it attempts to
boot, it looks like I
read every other 128 byte chunk correctly. I haven't figured out a
pattern
to the corrupt sections.
Does anyone have any RX02 diagnostics, or hardware trouble shooting tips?
Steve
3 Aug
3 Aug
8:42 a.m.
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11:41 a.m.
Hmmm, you'll find some info on RX02's at the
following URL, I just checked
and unfortunatly doesn't look to have the printset. I does have the
RX01/RX02 Pocket Service Guide though.
First make sure it's set for RXV21/RX11 and not the RX8E interface. Then
inspct the heads for crud and insure there are pressure pads in the arm
that presses the media to the disk. The disk must be either RX01 or RX02
format and if your trying to boot it must have the correct boot RX01/02
(or RT11 DY for rx02 DX for RX01). These things are generally
electronically reliable but connectors get loose, powersupplies go off the
correct voltages. The drives may have mechanical ill.
Allison
3:29 p.m.
Hi Steve:
See my web site, http://highgate.comm.sfu.ca/pdp8 for drive diagnostic and
troubleshooting information.
Kevin
I've been trying to bring my old RX02 drive back to life, with little
success.
I just received a good bootable floppy, and get the same results as with all
my old disks, so now I'm looking for hardware problems.
On a PDP-11/03, With RXV21 controller, and an RX02 drive, the RX02
initializes, attempts to read the boot block, and crashes to ODT at 000600.
--
Kevin McQuiggin VE7ZD
mcquiggi(a)sfu.ca
In examining what my system reads as it attempts
to boot, it looks like I
read every other 128 byte chunk correctly. I haven't figured out a
pattern
to the corrupt sections.
Does anyone have any RX02 diagnostics, or hardware trouble shooting tips?
Steve
4 Aug
4 Aug
1:27 a.m.
New subject: AT/370 and XT/370
The PS/2 newsgroup has been talking about the AT and XT models that
included a pair of cards that allowed fairly complete, if a bit slow, 370
mainframe emulation. Anybody every run across any of these?
3:34 a.m.
New subject: AT/370 and XT/370
We have a 3270 machine somewhere, but I haven't gotten around to see if
it's complete. IBM also issued a software package to turn their PC's
into 370 terminals.
On Wed, 4 Aug 1999, Mike Ford wrote:
The PS/2 newsgroup has been talking about the AT and
XT models that
included a pair of cards that allowed fairly complete, if a bit slow, 370
mainframe emulation. Anybody every run across any of these?
M. K. Peirce
Rhode Island Computer Museum, Inc.
215 Shady Lea Road,
North Kingstown, RI 02852
"Casta est qui nemo rogavit."
- Ovid
3:41 a.m.
New subject: AT/370 and XT/370
On Wed, 4 Aug 1999 08:34:04 -0400 (EDT) "Merle K. Peirce"
<at258(a)osfn.org> wrote:
We have a 3270 machine somewhere, but I haven't
gotten around to see if
it's complete. IBM also issued a software package to turn their PC's
into 370 terminals.
I have a PC/3270, which is an IBM PC modified to turn it
into a 3270 terminal. A new keyboard interface is used
to connect it to a 3270 keyboard, and there's a special
screen, too. It came with a manual and disks for the
terminal emulator software.
But no, I don't have a handy IBM/370 to plug it into
for testing!
--
John Honniball
Email: John.Honniball(a)uwe.ac.uk
University of the West of England
7:23 a.m.
New subject: AT/370 and XT/370
I just saw an IBM 3279 keyboard for sale on E-OverPay in case anyone's
interested. It's at
"http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=139929837"
Joe
At 01:41 PM 8/4/99 +0100, you wrote:
On Wed, 4 Aug 1999 08:34:04 -0400 (EDT) "Merle K. Peirce"
<at258(a)osfn.org> wrote:
We have a 3270 machine somewhere, but I
haven't gotten around to see if
it's complete. IBM also issued a software package to turn their PC's
into 370 terminals.
I have a PC/3270, which is an IBM PC modified to turn it
into a 3270 terminal. A new keyboard interface is used
to connect it to a 3270 keyboard, and there's a special
screen, too. It came with a manual and disks for the
terminal emulator software.
But no, I don't have a handy IBM/370 to plug it into
for testing!
--
John Honniball
Email: John.Honniball(a)uwe.ac.uk
University of the West of England
8 a.m.
New subject: AT/370 and XT/370
An old IBMmer buddy of mine has both the IBM 3270 card and the AT/370 board
set, he had them set up a single user VM system for a while. And yes, it
was extremely slow. A typical BAL job took roughly 45 minutes to run. It
would be very interesting to get s System 370 emulator written for a modern
Pentium III!
--Chuck
8:43 a.m.
New subject: AT/370 and XT/370
On Wed, 4 Aug 1999 08:34:04 -0400 (EDT) "Merle K.
Peirce"
<at258(a)osfn.org> wrote:
Thats just it, the cards I mention allow full mainframe versions of
programs to run on the PC's. Here is a clip from an exchange in the
newsgroup.
The easy way to do this is to look for a 9371. This is a repackaged mod
80 with the 370 cardset, a couple of ARTIC cards and 2-4 320m SCSI drives
that look like DASD. The machine will probably have VSE loaded on it if
it wasn't purged. The load sequence is it boots a PCDOS looking system
and at a certain point you will see VSE, CICS and some application code
load. You will use the native PC monitor until the CICS loads then you
will have a VSE console on the 0,0 ARTIC port. State farm dumped about 17,
000 of these a few years ago through a company in New Jersey so they
should still be around somewhere.
We have a 3270 machine somewhere, but I
haven't gotten around to see if
it's complete. IBM also issued a software package to turn their PC's
into 370 terminals.
I have a PC/3270, which is an IBM PC modified to turn it
into a 3270 terminal. A new keyboard interface is used
to connect it to a 3270 keyboard, and there's a special
screen, too. It came with a manual and disks for the
terminal emulator software.
But no, I don't have a handy IBM/370 to plug it into
for testing! 
5:02 a.m.
New subject: AT/370 and XT/370
The PS/2 newsgroup has been talking about the AT and
XT models that
included a pair of cards that allowed fairly complete, if a bit slow, 370
mainframe emulation. Anybody every run across any of these?
Heared of yes, run across no - but I realy like to have one,
not only for the historic value, since I'm an old /370 die
hard.
Add on: there has also been a similar solution in the same
time frame, from Siemens. But instead of using a ISA Bus
machine (PC XT/AT) they took their PC-MX2 (Sinix (Unix V
and BSD), NS 32032 CPU, Multibus) system as base for the
PC-2000. The /370 alike multibus board was build around
a modified 68020 - Achtung: thats _not_ an emulation, since
the 68020 did get a new micro code to run native /370 objects.
Well, and of course an adapted version of BS2000 (the Siemens
mainframe OS).
Gruss
H.
--
Stimm gegen SPAM: http://www.politik-digital.de/spam/de/
Vote against SPAM: http://www.politik-digital.de/spam/en/
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Ich denke, also bin ich, also gut
HRK
7:12 a.m.
New subject: AT/370 and XT/370
On Wed, 4 Aug 1999, Mike Ford wrote:
The PS/2 newsgroup has been talking about the AT and
XT models that
included a pair of cards that allowed fairly complete, if a bit slow, 370
mainframe emulation. Anybody every run across any of these?
Yes, I have one in my collection. We also had a discussion about these
machines maybe 10 weeks back or so. You may want to search the CC
archives.
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Don't rub the lamp if you don't want the genie to come out.
Coming this October 2-3: Vintage Computer Festival 3.0!
See http://www.vintage.org/vcf for details!
[Last web site update: 05/25/99]
10:55 a.m.
New subject: AT/370 and XT/370
On 4 Aug 99 at 9:12, Sellam Ismail wrote:
On Wed, 4 Aug 1999, Mike Ford wrote:
And as I mentioned in the last discussion on the 3270 machines, I have a
monitor for them that is available.
ciao larry
lwalker(a)interlog.com
Let us know of your upcoming computer events for our Events Page.
t3c(a)xoommail.com
Vintage Computer Collectors List and info http://members.xoom.com/T3C
The PS/2 newsgroup has been talking about the AT
and XT models that
included a pair of cards that allowed fairly complete, if a bit slow, 370
mainframe emulation. Anybody every run across any of these?
Yes, I have one in my collection. We also had a discussion about these
machines maybe 10 weeks back or so. You may want to search the CC
archives.
Sellam Alternate e-mail: dastar(a)siconic.com 
5 Aug
5 Aug
1:02 a.m.
New subject: AT/370 and XT/370
Just browsing through my browser bookmarks, as you do, I came across
this:
"IBM 370 option XT and AT emulation boards $25.00 "
at
<http://www.digisys.net/timeline/blowout.html>
Are these the real thing? Of course they could be option boards for 370
systems to make them emulate an XT or an AT ;-). Interesting in either
case
Regards
_---_--__-_-_----__-_----_-__-__-_-___--_-__--___-__----__--_--__-___-
Hans B Pufal Comprehensive Computer Catalogue
<mailto:hansp@digiweb.com> <http://digiweb.com/~hansp/ccc>
29 Jul
29 Jul
3:03 a.m.
New subject: AT/370 and XT/370
Most likely they are boards to turn PC's or AT's into 3270
terminals - would be kinda cheep for an 370 board I think. Boy oh
boy would that not be cool if they were 370 boards!! After working
with PC's for 15 years I've yet to see the real thing so they must
be rare.
rdg
-----Original Message-----
From: CLASSICCMP-owner(a)u.washington.edu
[mailto:CLASSICCMP-owner@u.washington.edu]On Behalf Of Hans B Pufal
Sent: Thursday, August 05, 1999 5:03 AM
To: Discussion re-collecting of classic computers
Subject: Re: AT/370 and XT/370
Just browsing through my browser bookmarks, as you do, I came across
this:
"IBM 370 option XT and AT emulation boards $25.00 "
at
<http://www.digisys.net/timeline/blowout.html>
Are these the real thing? Of course they could be option boards for
370
systems to make them emulate an XT or an AT ;-). Interesting in
either
case
Regards
_---_--__-_-_----__-_----_-__-__-_-___--_-__--___-__----__--_--__-__
_-
Hans B Pufal Comprehensive Computer
Catalogue
<mailto:hansp@digiweb.com>
<http://digiweb.com/~hansp/ccc>
5 Aug
5 Aug
5:13 a.m.
New subject: AT/370 and XT/370
Just browsing through my browser bookmarks, as you do,
I came across
this:
"IBM 370 option XT and AT emulation boards $25.00
"
at
<http://www.digisys.net/timeline/blowout.html>
Are these the real thing?
If anybody can veryfy this, I want one!
Gruss
h.
--
Stimm gegen SPAM: http://www.politik-digital.de/spam/de/
Vote against SPAM: http://www.politik-digital.de/spam/en/
Votez contre le SPAM: http://www.politik-digital.de/spam/fr/
Ich denke, also bin ich, also gut
HRK
8:23 a.m.
New subject: AT/370 and XT/370
Just browsing
through my browser bookmarks, as you do, I came across
this:
"IBM 370 option XT and AT emulation boards
$25.00 "
at
<http://www.digisys.net/timeline/blowout.html>
Are these the real thing?
If anybody can veryfy this, I want one!
9:54 a.m.
New subject: AT/370 and XT/370
Hans Franke wrote:
Well I just talked with them. Sounds very much like it is the real
thing. "Two plug-in boards connected across the top. Part numbers are:
IBMXT1602509 and IBMAT6236115. No external connectors"
At first they said that they had plenty in stock but then I was told
that that was not the case but that I could have one if I ordered one.
So I did! Don't know how many more they have....
If someone could verify the part numbers
Regards
_---_--__-_-_----__-_----_-__-__-_-___--_-__--___-__----__--_--__-___-
Hans B Pufal Comprehensive Computer Catalogue
<mailto:hansp@digiweb.com> <http://digiweb.com/~hansp/ccc>
Just browsing through my browser bookmarks, as
you do, I came across
this:
"IBM 370 option XT and AT emulation boards
$25.00 "
at
<http://www.digisys.net/timeline/blowout.html>
Are these the real thing?
If anybody can veryfy this, I want one! 
23 Aug
23 Aug
7:17 a.m.
New subject: AT/370 and XT/370
Verified. Looked them up on www.ibmlink.ibm.com . Found them in the
withdrawl letters.
Unfortunately, Timeline is currently out of stock. RATS -- which I had
more time to keep up on the list.
Jay Jaeger
At 08:54 PM 8/5/99 +0200, you wrote:
Hans Franke wrote:
Well I just talked with them. Sounds very much like it is the real
thing. "Two plug-in boards connected across the top. Part numbers are:
IBMXT1602509 and IBMAT6236115. No external connectors"
At first they said that they had plenty in stock but then I was told
that that was not the case but that I could have one if I ordered one.
So I did! Don't know how many more they have....
If someone could verify the part numbers
Regards
_---_--__-_-_----__-_----_-__-__-_-___--_-__--___-__----__--_--__-___-
Hans B Pufal Comprehensive Computer Catalogue
<mailto:hansp@digiweb.com> <http://digiweb.com/~hansp/ccc>
---
Jay R. Jaeger The Computer Collection
Jay.Jaeger(a)msn.fullfeed.com visit http://www.msn.fullfeed.com/~cube
Just browsing through my browser bookmarks, as
you do, I came across
this:
"IBM 370 option XT and AT emulation boards
$25.00 "
at
<http://www.digisys.net/timeline/blowout.html>
Are these the real thing?
If anybody can veryfy this, I want one!
9101
days inactive
9121
days old
19 comments
16 participants
participants (16)
-
allisonp＠world.std.com -
ard＠p850ug1.demon.co.uk -
at258＠osfn.org -
ccfsm＠ipa.net -
cmcmanis＠mcmanis.com -
cube＠msn.fullfeed.com -
dastar＠ncal.verio.com -
Hans.Franke＠mch20.sbs.de -
hansp＠digiweb.com -
healyzh＠aracnet.com -
John.Honniball＠uwe.ac.uk -
lwalker＠mail.interlog.com -
mcquiggi＠sfu.ca -
mikeford＠netwiz.net -
rigdonj＠intellistar.net -
steve.lubbers＠barco.com