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CP/M User
August 1st, 2006, 09:24 PM
Although we're happy to help with enquiries concerning CP/M System Disks, we also recommend you try Daves Old Computers - Disk/Software Images (http://www.classiccmp.org/dunfield/img/index.htm) website or the Usenet group comp.os.cpm if you require CP/M System Disks.

Unfortunately in the passing of Don Maslin in August 2004, Don handled many of the CP/M System Disks which people could obtain from him, for more details check out Gaby's Domain (http://www.gaby.de/ecpm.htm) people are welcome to contact Gaby if they wish to carry on with Don's Legacy.

CP/M User.

Erik
August 2nd, 2006, 04:31 AM
Good info! Thanks!

Mike Chambers
September 2nd, 2006, 01:51 AM
AWESOME!!! you are the man!

that's exactly what i needed to get my 1981 osborne model 1 booted up. :p :p :p :p :p

nige the hippy
September 3rd, 2006, 10:13 AM
if you're local i could lend you mine, are you in the uk??? if so, pm with where

mainframeOFpasta
March 20th, 2007, 07:47 AM
I have been look all around for this stuff. A thousand digital thanks.

mainframeOFpasta
March 21st, 2007, 05:09 AM
Is it possible to get a machine from the pentium days to run on CP/M? What is CP/M wirtten in?

Vlad
March 21st, 2007, 05:52 AM
http://www.gaby.de/ecpm86.htm

Use Google!!

Terry Yager
March 21st, 2007, 06:34 AM
Besides CP/M-86, which was written for the 8086 archetecture, there are a number of good (free) emulators to run CP/M-80 on IBM-PC compatible hardware. Most of them may be downloaded from Gaby's site mentioned above.

CP/M-80 was originally written in a language called PL/M, which was a port for microprocessors of a mainframe language called PL/I. Later versions were written in assembly language, IIRC.

--T

CP/M User
March 23rd, 2007, 03:24 AM
Terry Yager wrote:

Besides CP/M-86, which was written for the 8086 archetecture, there are a number of good (free) emulators to run CP/M-80 on IBM-PC compatible hardware. Most of them may be downloaded from Gaby's site mentioned above.

There are also CP/M-80 emulators for CP/M-86. Personally though I'd go for an emulator and run CP/M through that (making sure you get an emulator which can handle CP/M well).

CP/M-80 was originally written in a language called PL/M, which was a port for microprocessors of a mainframe language called PL/I. Later versions were written in assembly language, IIRC.

Isn't it true though that parts of CP/M were written in raw Machine Code (possibly Assembly) due to the amount of memory limitations or memory limitations of the Boot Sector. This wouldn't have been large amount of code, though code critical towards making CP/M efficent bootup and be usable. PL/M indeed would have been used perhaps in sections like the command line operation and internal commands.

barythrin
July 28th, 2010, 12:04 PM
See? I should always check the forum before posting redundant information ;-) I wasn't aware of this effort by Don (great job and unfortunate loss) but since Curtis is also trying to find some of these but I was going to repost the url above which is live. Dave's also here somewhere though I'm not sure if he logs in still. What this does make me increasingly aware of is how unfortunate it is when we can't share our archives online or consolidate them and they get lost on disk due to various happenings. Kinda puts a positive spin on the sharing of old applications to keep these things around for all to use, enjoy, and help preserve.

(Dumb question) Does the library of Congress hold software archives for copyright purposes? Do they or the proper authoritative entity ever release that software for public domain or retrieval?

Chuck(G)
July 28th, 2010, 12:36 PM
See? I should always check the forum before posting redundant information ;-) I wasn't aware of this effort by Don (great job and unfortunate loss) but since Curtis is also trying to find some of these but I was going to repost the url above which is live. Dave's also here somewhere though I'm not sure if he logs in still. What this does make me increasingly aware of is how unfortunate it is when we can't share our archives online or consolidate them and they get lost on disk due to various happenings. Kinda puts a positive spin on the sharing of old applications to keep these things around for all to use, enjoy, and help preserve.

It may not be a loss. Don's widow passed away recently and there's a very diplomatic determined guy holding discussions with Don's son about finally retrieving the archive.


(Dumb question) Does the library of Congress hold software archives for copyright purposes? Do they or the proper authoritative entity ever release that software for public domain or retrieval?

Not usually--and note that in any case, the works would be under copyright until at least 2070 in most cases. While CP/M itself may be in a free-use open-source category, any accompanying code specific to a given system (such as the BIOS) would still be covered by copyright. After the GATT URAA negoations in 1978, specimen copies, proof of publication and copyright notices and registration were no longer required in the US. The rule of thumb is that a work is copyrighted unless it specifically says otherwise. The LOC would most likely not cooperate when it comes to works still under copyright.

curtis
July 29th, 2010, 04:52 AM
Somehow or another I completely missed this thread!

In light of what Gaby and Dave have going on, I think any images I may pick up next weekend, I will send copies to both of them along with what I already have. That way there will be at least 3 places where stuff can be found.

Plus, we can hope the very diplomatic determined guy will get through to Don Maslin's son.

curtis
August 9th, 2010, 09:21 AM
Well, I didn't get a blessed thing done on my archive this past weekend. Seems the Dell POS I was going to use has a bad floppy controller and somehow or another locks the 5.25" drive into 1.2 mode even if EVERYTHING says it's a 360K! Oh well, back to a generic no-name machine. They always work better!

Chuck(G)
August 9th, 2010, 01:09 PM
Curtis,

What make/model of drive and how are any drive jumpers set?

leeb
August 9th, 2010, 03:44 PM
Im trying to find a copy of CPM/3 for the Tandy Model 4/4p...
Altho I found a source from the site that has the emulator Im using, it is in ACE format and every winace Ive downloaded claims its 'broken'...

As long as I can find the system/bios file(s) I could probably connive a working system from it...
It neednt be in the original format... and could even be in a DOS folder.

Assistance would be greatly appreciated!
:D

Chuck(G)
August 9th, 2010, 04:13 PM
Got a URL, leed?

leeb
August 9th, 2010, 05:41 PM
Um... dat's LEEB... :p

Im sorry... for 'my source'?

David Keil's TRS-80 Emulator page...

http://www.discover-net.net/~dmkeil/index.htm

Because of this emulator I was able to 1) create 3.5" disks to boot from, and 2) configure the working IDE drive. :mrgreen:

If only the cp/m3 worked...

Chuck(G)
August 9th, 2010, 09:11 PM
Sorry, leeb. :blush:

I think the archive's damaged--note the big block of 0000 between CAF0h and 30ED0H. That doesn't look right. i.e. out of 208,896 bytes, 148,448 of them are zero.

leeb
August 10th, 2010, 04:57 AM
Yes, I noticed that when I opened it in notepad... last nite. :shock:

Think simply removing the nulls would do any good? Just a thought.:eh:

Id like to get CPM3 working so that I will know it a bit better when I attempt a re-write for the system Im attempting to design/build...

A 'kinda-down-the-road' affair, as I have 2 machines that still require repair (and whats left of my hair :x) but I want to be completely familiar with the memory-banking techniques it uses before I finish the system...

Thanks for taking a look! Please feel free to PM me if you happen to find anything useful! :mrgreen:

Chuck(G)
August 10th, 2010, 07:20 AM
I'll have a look through my collection when I get a chance to see if there's something there for the Mod 4 that you can use. But no--I don't think that removing the nulls will fix anything.

leeb
August 12th, 2010, 10:01 AM
I really didnt either.... just had to say it. :D

I certainly appreciate your looking!!

edit:
I may have just found one compliments of kb2syd's post in 'Model 4 Terminal Emulator' thread...

They are .DSK files but I am sure I have software to work with them.... and I think my emulator works with .DSK images anyway.

:mrgreen:

edit2:
I am pleased to say that I now have a working copy of CPM+ for the 4p...
An interesting note is: It will NOT BOOT on the emulator if the system is in 4p mode due to a 'fake' BOOTROM :roll: ...
It WILL work in Model 4 w/FDC mode...
A bit of a surprise, but at least it works!
NOW.... I have to relearn everything so that I can get it to work with the 3.5" drives... and MORE SPACE!!! I didnt keep the SSDD 5.25s once I got the 3.5ers working... so more emulator play-time is in order!
:D

mclaren
August 19th, 2010, 11:49 PM
Im trying to find a copy of CPM/3 for the Tandy Model 4/4p...
Altho I found a source from the site that has the emulator Im using, it is in ACE format and every winace Ive downloaded claims its 'broken'...

As long as I can find the system/bios file(s) I could probably connive a working system from it...
It neednt be in the original format... and could even be in a DOS folder.

Assistance would be greatly appreciated!
:D

I might be able to help you. I have an IBM PC/XT with a Matchpoint card and a modified 5.25" floppy drive, so I can read and write several hundred different kinds of 5.25" floppy formats. If I can download a CP/M image file I can _probably_ write it to the disk format your Tandy requires. (Probably. No guarantees.)

leeb
August 20th, 2010, 12:04 AM
I appreciate your input but as I mentioned I was able to find it useable on the emulator...
It will likely need to be modified before I can use it on 3.5" drives...

Terry Yager
February 9th, 2012, 06:51 PM
Sheesh, where'd all this recent activity come from? Have I been gone, or what?

If anybody still needs CP/M+ for the Trashy-80 M-4 on original-type media, I know Mark has it. Whether he can lay his hands on sometime this century, I'll have to see but lemme know if it's still needed. (Last time I was over there he still had his 4 set up, but he has also swapped out the drives for 3.5", but kept the old media).

--T

geneb
January 8th, 2014, 05:49 AM
I didn't see this in the sticky - Don Maslin's boot disk and ROM archive WAS finally rescued. You can find my copy of it here:
http://www.retroarchive.org/maslin/index.html

g.

TFM
February 11th, 2016, 12:46 PM
Anybody got a system disc for a LOS C25 CP/M system?

Buggoo
April 19th, 2017, 10:19 AM
Any current information out there on where I might purchase MS-DOS 2.1 system disk for a TI personal portable computer?
Thank you
Buggoo