3 Jun
2008
3 Jun
'08
6:23 p.m.
Subject: Re: powering up older machines - is it safe?
From: Steven Hirsch <snhirsch at gmail.com>
Date: Tue, 03 Jun 2008 09:00:15 -0400 (EDT)
To: "General Discussion: On-Topic Posts Only" <cctech at
classiccmp.org>
On Mon, 2 Jun 2008, Allison wrote:
> Generally yes in my exerience. The PS is a ASTEC switcher in the drive
snippage...
Allison,
Do you recall anything about the semi-mythical Corvus interface for the
VT180? It's mentioned in the Corvus technical literature, but I've never
talked to anyone that's actually seen it in the wild. I'm curious if it
ever actually existed.
Steve
Nothing mythical. There was a version of the corvus interface that
was a board that went under the Z80 and therefor allowed most any
Z80 system to accept the corvus hardware. It wasn't however sold as
a uniquely Robin thing.
FYI the Robin does not have any for of external bus. If you want
access to the bus you have to jack up the Z80 and grab it there.
I ahve a Vt180, Vt185 (VT125+VT185 board) and maybe 4 VT180 boards
rigged as standalone and a dozen more if I need a Z80, 8k of shadow rom,
65K of ram, 4 serial ports and a FDC on one nice board.
Allison
4 Jun
4 Jun
5:18 a.m.
New subject: NCR 7500 Series: Help needed
Hi!
Now that i have worked several months on the repair of a NCR 7500 System,
i'm able to power it up and get some screen messages.
But without a System-Tape to boot from nothing can be done.
The tapes that came with the NCR are "NOT PROGRAM TAPE".
Maybe the tapes are faulty too.
Has anybody documentation and/or software for this machine?
Axel Harten
--
5 Jun
5 Jun
1:55 p.m.
New subject: NCR 7500 Series: Help needed
Hi Axel - you may want to reach out to the http://www.thecorememory.com/ a web site
dedicate to NCR Systems
Russ
--- On Wed, 6/4/08, Harten <harten at injectstar.de> wrote:
From: Harten <harten at injectstar.de>
Subject: NCR 7500 Series: Help needed
To: cctech at classiccmp.org
Date: Wednesday, June 4, 2008, 5:18 AM
Hi!
Now that i have worked several months on the repair of a NCR 7500 System,
i'm able to power it up and get some screen messages.
But without a System-Tape to boot from nothing can be done.
The tapes that came with the NCR are "NOT PROGRAM TAPE".
Maybe the tapes are faulty too.
Has anybody documentation and/or software for this machine?
Axel Harten
--
6 Jun
6 Jun
5:11 a.m.
New subject: NCR 7500 Series: Help needed
In message <93713.52074.qm at web32801.mail.mud.yahoo.com> you wrote:
Hi Axel - you may want to reach out to the
http://www.thecorememory.com/ a web site dedicate to NCR Systems
Russ
Hi Russ!
I have already checked out this site and contacted the "webmaster" but
he could not help me with this type of machine.
He was sorry about that - no further documentation or software.
Axel.
--- On Wed, 6/4/08, Harten <harten at
injectstar.de> wrote:
From: Harten <harten at injectstar.de>
Subject: NCR 7500 Series: Help needed
To: cctech at classiccmp.org
Date: Wednesday, June 4, 2008, 5:18 AM
Hi!
Now that i have worked several months on the repair of a NCR 7500 System,
i'm able to power it up and get some screen messages.
But without a System-Tape to boot from nothing can be done.
The tapes that came with the NCR are "NOT PROGRAM TAPE".
Maybe the tapes are faulty too.
Has anybody documentation and/or software for this machine?
Axel Harten
--
--
4 Jun
4 Jun
7:22 a.m.
On Tue, 3 Jun 2008, Allison wrote:
Hmm. Definitely referred to as the VT180 interface in the Corvus book,
but perhaps that was more of a statement about the software?
If anyone has one of these, I am very interested in owning it.
Do you recall
anything about the semi-mythical Corvus interface for the
VT180? It's mentioned in the Corvus technical literature, but I've never
talked to anyone that's actually seen it in the wild. I'm curious if it
ever actually existed.
Nothing mythical. There was a version of the corvus interface that
was a board that went under the Z80 and therefor allowed most any
Z80 system to accept the corvus hardware. It wasn't however sold as
a uniquely Robin thing. FYI the Robin does not have any for of external bus.
If you want
access to the bus you have to jack up the Z80 and grab it there.
Corvus took other routes as well. The interface for Xerox 820 connects to
a pair of what appear to be parallel IO ports on the motherboard. Given
the limited transfer rate, it certainly did not need to be sitting on the
processor bus.
Steve
--
12:16 p.m.
subject needs to reflect corvis + Vt180
Steven Hirsch wrote:
On Tue, 3 Jun 2008, Allison wrote:
Hmm. Definitely referred to as the VT180 interface in the Corvus
book, but perhaps that was more of a statement about the software?
likely the disk and driver code (bios overlay).
Do you
recall anything about the semi-mythical Corvus interface for the
VT180? It's mentioned in the Corvus technical literature, but I've
never
talked to anyone that's actually seen it in the wild. I'm curious
if it
ever actually existed.
Nothing mythical. There was a version of the corvus interface that
was a board that went under the Z80 and therefor allowed most any
Z80 system to accept the corvus hardware. It wasn't however sold as
a uniquely Robin thing. If anyone has one of these, I am very interested in
owning it.
don't confuse speed with means of attachment. for example VT180 has no
parallel ports accessible. other machines may have.
Allison
FYI the Robin does not have any for of external
bus. If you want
access to the bus you have to jack up the Z80 and grab it there.
Corvus took other routes as well. The interface for Xerox 820
connects to a pair of what appear to be parallel IO ports on the
motherboard. Given the limited transfer rate, it certainly did not
need to be sitting on the processor bus.
Steve
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days inactive
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5 comments
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ajp166＠bellatlantic.net -
ajp166＠verizon.net -
arcbe2001＠yahoo.com -
harten＠injectstar.de -
snhirsch＠gmail.com