3 Jun
2014
3 Jun
'14
3:53 a.m.
Originally Digital Research supplied CP/M in a form suitable for an Intel
MDS, and it was up to OEMs to hack it to work on anything else. Since I've
got an MDS, I'd like to get an image of a CP/M distribution disk for the
MDS.
I thought I'd seen such a disk image online a few years back, but I can't
seem to locate it now, so perhaps I'm mistaken.
I'm interested in any versions; the more the better.
Thanks!
Eric
3 Jun
3 Jun
5:54 a.m.
On 06/02/2014 07:53 PM, Eric Smith wrote:
Originally Digital Research supplied CP/M in a form
suitable for an Intel
MDS, and it was up to OEMs to hack it to work on anything else. Since I've
got an MDS, I'd like to get an image of a CP/M distribution disk for the
MDS.
I thought I'd seen such a disk image online a few years back, but I can't
seem to locate it now, so perhaps I'm mistaken.
Is it this one?
http://www.cpm.z80.de/download/cpm22red.zip
I've got the MP/M OEM distro disk. Amazingly, it will load and run on
an MDS 800, using the current loop hookup as a second terminal (IIRC).
--Chuck
7:37 a.m.
On Mon, Jun 2, 2014 at 10:54 PM, Chuck Guzis <cclist at sydex.com> wrote:
Is it this one?
http://www.cpm.z80.de/download/cpm22red.zip
I think so. I'll give it a try. Thanks for providing the link.
It would be nice to get other versions for the MDS, including your MP/M if
it's not too much trouble for you to image it.
Eric
9:16 a.m.
quik look not cpm something called isis 2 operating system v4.1 and v 4.2
On Tue, Jun 3, 2014 at 1:37 AM, Eric Smith <spacewar at gmail.com> wrote:
On Mon, Jun 2, 2014 at 10:54 PM, Chuck Guzis
<cclist at sydex.com> wrote:
Is it this one?
http://www.cpm.z80.de/download/cpm22red.zip
I think so. I'll give it a try. Thanks for providing the link.
It would be nice to get other versions for the MDS, including your MP/M if
it's not too much trouble for you to image it.
Eric
6:11 p.m.
On 06/03/2014 01:16 AM, Adrian Stoness wrote:
quik look not cpm something called isis 2 operating
system v4.1 and v 4.2
No, the link I gave is the standard OEM redistribution disk (I've got a
similar copy here). It's not bootable--and neither is my copy.
However, it does have all the files necessary to generate a bootable MDS
floppy.
What's not here is the resulting bootable floppy. If anyone's
desperate, I can create one--but it's not hard if you even have a CP/M
emulator evailable. Just indicate how much memory you have in your system.
--Chuck
8:17 p.m.
umm
https://www.flickr.com/photos/1ajs/6171038488/
On Tue, Jun 3, 2014 at 12:11 PM, Chuck Guzis <cclist at sydex.com> wrote:
On 06/03/2014 01:16 AM, Adrian Stoness wrote:
quik look not cpm something called isis 2
operating system v4.1 and v 4.2
No, the link I gave is the standard OEM redistribution disk (I've got a
similar copy here). It's not bootable--and neither is my copy. However, it
does have all the files necessary to generate a bootable MDS floppy.
What's not here is the resulting bootable floppy. If anyone's desperate,
I can create one--but it's not hard if you even have a CP/M emulator
evailable. Just indicate how much memory you have in your system.
--Chuck
10:50 p.m.
On 06/03/2014 12:17 PM, Adrian Stoness wrote:
I don't see your point. I used MDS 800 and 200 systems and, yes they
ran ISIS, but DRI also furnished the OEM kit on 8" SSSD to work with the
MDS-800. I believe that you'll find specific mention of the MDS in the
source code on the redistribution disk.
The redistribution disk was just that--it contains the tools necessary
to create a master copy of CP/M system for redistribution, including a
program that can be used to insert serial numbers into the system binary
and MOVCPM. It does not include the "user utilities" such as PIP, ED,
ASM, etc.
It contains the following files:
bios.asm cpmgen.sub cpsys1.hex genmod.cpm serial.hex
boot0.hex cpmove.asm cpxfer.asm serial.asm sysgen.asm
boot1.hex cpmove.hex cpxfer.com serial.bak unskew.asm
boot.asm cpsys0.hex genhex.com serial.com unskew.com
That's it--the CP/M redistribution disk.
--Chuck
21 Jun
21 Jun
6:52 a.m.
On Tue, Jun 3, 2014 at 3:50 PM, Chuck Guzis <cclist at sydex.com> wrote:
That's it--the CP/M redistribution disk.
OK, now I'm looking for an image of an original 8-inch SS SD CP/M 2.2 (or
other versions) as supplied by DRI, in other words, bootable on the MDS.
That's what you got if you bought a copy of CP/M directly from DRI, rather
than from one of their OEMs.
I've built my own disk from other copies of CP/M 2.2 and the redistribution
disk, but it's not working, so it would be nice to have an image of the
real thing to see where I went wrong.
7:32 a.m.
On 06/20/2014 10:52 PM, Eric Smith wrote:
I've built my own disk from other copies of CP/M
2.2 and the redistribution
disk, but it's not working, so it would be nice to have an image of the
real thing to see where I went wrong.
This archive claims to have both SD and DD Intellec images of 62K CP/M:
http://www.z80.info/sample_disks/Intellec.zip
--Chuck
10:11 a.m.
On Sat, Jun 21, 2014 at 12:32 AM, Chuck Guzis <cclist at sydex.com> wrote:
This archive claims to have both SD and DD Intellec
images of 62K CP/M:
http://www.z80.info/sample_disks/Intellec.zip
That's interesting, but it's all stuff that's been modified to run on some
Z80 simulator, not on the real MDS. There's a claim that their CP/M double
density image *might* run on real hardware. Their SD image definitely
won't unless the MDS has the optional two-card SD controller, rather than
the MDS' built-in 8271 controller. I believe the original DRI disk should
run with the 8271. Hopefully someone somewhere has saved a genuine DRI
disk.
If all else fails I can hook up a logic analyzer to my MDS to figure out
where things are going awry.
2:55 p.m.
I don't recall seeing the 8271 used or refenced
in any of the CP/M releases. I thought they all used
the bios code.
The originals would have used the two card SD controller
as in MDS800 not the series II 8271.
Even so, I thought they used the bios calls and not directly
to the controller.
Maybe it is just brain fade on my part.
Dwight
Date: Sat, 21 Jun 2014 03:11:51 -0600
Subject: Re: image of CP/M disk for Intel MDS wanted
From: spacewar at gmail.com
To: cctalk at classiccmp.org
On Sat, Jun 21, 2014 at 12:32 AM, Chuck Guzis <cclist at sydex.com> wrote:
This archive claims to have both SD and DD
Intellec images of 62K CP/M:
http://www.z80.info/sample_disks/Intellec.zip
That's interesting, but it's all stuff that's been modified to run on some
Z80 simulator, not on the real MDS. There's a claim that their CP/M double
density image *might* run on real hardware. Their SD image definitely
won't unless the MDS has the optional two-card SD controller, rather than
the MDS' built-in 8271 controller. I believe the original DRI disk should
run with the 8271. Hopefully someone somewhere has saved a genuine DRI
disk.
If all else fails I can hook up a logic analyzer to my MDS to figure out
where things are going awry.
4:26 p.m.
On 06/21/2014 06:55 AM, dwight wrote:
I don't recall seeing the 8271 used or refenced
in any of the CP/M releases. I thought they all used
the bios code.
The originals would have used the two card SD controller
as in MDS800 not the series II 8271.
Even so, I thought they used the bios calls and not directly
to the controller.
Maybe it is just brain fade on my part.
No, you're right on that--the DRI disks would boot and run on an MDS800
and used the BIOS for disk I/O. We also had a Series II MDS with the
2-card controller (FM and MMFM--it didn't use MFM) that could boot and
run them.
One of those two boards (channel card?) used Intel 3000 series bit-slice
bipolar logic and ran hot as a two-buck piston, as I recall.
--Chuck
4:41 p.m.
Dwight is correct.
I have the original DRI disks in double density. As far as I can
remember DRI never supported the 8271 directly. I had to make my own
BIOS in order to make a CP/M 2.2 (and 3.0 for that matter) that
supported and/or booted from the 8271 in the MDS Series II.
The original DRI disks supported the two-board set of disk controllers
from Intel. Single density and double density versions
of that board
set were very similar in the way they were driven. The differences
in
BIOS support between single and double density were trivial.
dwight said the following on 6/21/2014 9:55 AM:
I don't recall seeing the 8271 used or refenced
in any of the CP/M releases. I thought they all used
the bios code.
The originals would have used the two card SD controller
as in MDS800 not the series II 8271.
Even so, I thought they used the bios calls and not directly
to the controller.
Maybe it is just brain fade on my part.
Dwight
Date: Sat, 21 Jun 2014 03:11:51 -0600
Subject: Re: image of CP/M disk for Intel MDS wanted
From: spacewar at gmail.com
To: cctalk at classiccmp.org
On Sat, Jun 21, 2014 at 12:32 AM, Chuck Guzis <cclist at sydex.com> wrote:
This archive claims to have both SD and DD
Intellec images of 62K CP/M:
http://www.z80.info/sample_disks/Intellec.zip
That's interesting, but it's all stuff that's been modified to run on
some
Z80 simulator, not on the real MDS. There's a claim that their CP/M double
density image *might* run on real hardware. Their SD image definitely
won't unless the MDS has the optional two-card SD controller, rather than
the MDS' built-in 8271 controller. I believe the original DRI disk should
run with the 8271. Hopefully someone somewhere has saved a genuine DRI
disk.
If all else fails I can hook up a logic analyzer to my MDS to figure out
where things are going awry.
5:42 p.m.
When I was at Intel, one of the boards I was responsible
for was the analog board ( 1036 as I recall ) for the MMFM.
There was a problem that came up with the timing that I fixed
that was caused by better ROM chips that were faster.
It was one of the signals that was between the two cards.
For the double density, I remember one of the engineers that
worked on the firmware for the 3000's on the MMFM.
It was a fellow named Lou Bolardo (sp?). Doing programming
with the 3000 series sequencer was like playing a game of chess.
Lots of options of which only a few would complete. I
never liked the guy personally but had the highest respect for
his engineering ability.
We had a lot of troubles with the signal diode getting mixed
with the zener diodes on the analog boards. Zeners just don't
work right in the balance mixer used for the phase detector.
I was responsible for the test procedures of the analog board.
Even then, I was one of the few that understood enough analog
to deal with this board and power supplies.
Dwight
Date: Sat, 21 Jun 2014 11:41:01 -0400
From: dmabry at mich.com
To:
Subject: Re: image of CP/M disk for Intel MDS wanted
Dwight is correct.
I have the original DRI disks in double density. As far as I can
remember DRI never supported the 8271 directly. I had to make my own
BIOS in order to make a CP/M 2.2 (and 3.0 for that matter) that
supported and/or booted from the 8271 in the MDS Series II.
The original DRI disks supported the two-board set of disk controllers
from Intel. Single density and double density versions of that board
set were very similar in the way they were driven. The differences in
BIOS support between single and double density were trivial.
dwight said the following on 6/21/2014 9:55 AM:
I don't recall seeing the 8271 used or
refenced
in any of the CP/M releases. I thought they all used
the bios code.
The originals would have used the two card SD controller
as in MDS800 not the series II 8271.
Even so, I thought they used the bios calls and not directly
to the controller.
Maybe it is just brain fade on my part.
Dwight
Date: Sat, 21 Jun 2014 03:11:51 -0600
Subject: Re: image of CP/M disk for Intel MDS wanted
From: spacewar at gmail.com
To: cctalk at classiccmp.org
On Sat, Jun 21, 2014 at 12:32 AM, Chuck Guzis <cclist at sydex.com> wrote:
This archive claims to have both SD and DD
Intellec images of 62K CP/M:
http://www.z80.info/sample_disks/Intellec.zip
That's interesting, but it's all stuff that's been modified to run on
some
Z80 simulator, not on the real MDS. There's a claim that their CP/M double
density image *might* run on real hardware. Their SD image definitely
won't unless the MDS has the optional two-card SD controller, rather than
the MDS' built-in 8271 controller. I believe the original DRI disk should
run with the 8271. Hopefully someone somewhere has saved a genuine DRI
disk.
If all else fails I can hook up a logic analyzer to my MDS to figure out
where things are going awry.
3 Jun
3 Jun
8:55 a.m.
wish i knew how to make images of 8in floppies as ive got a mds 225 with
all ts floppies hard and soft secored
On Mon, Jun 2, 2014 at 11:54 PM, Chuck Guzis <cclist at sydex.com> wrote:
On 06/02/2014 07:53 PM, Eric Smith wrote:
Originally Digital Research supplied CP/M in a
form suitable for an Intel
MDS, and it was up to OEMs to hack it to work on anything else. Since
I've
got an MDS, I'd like to get an image of a CP/M distribution disk for the
MDS.
I thought I'd seen such a disk image online a few years back, but I can't
seem to locate it now, so perhaps I'm mistaken.
Is it this one?
http://www.cpm.z80.de/download/cpm22red.zip
I've got the MP/M OEM distro disk. Amazingly, it will load and run on an
MDS 800, using the current loop hookup as a second terminal (IIRC).
--Chuck
3622
days inactive
3640
days old
14 comments
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