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CP/M Disk Images?

mcpierce

mcpierce

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Sep 8, 2025
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I had posted in another thread about getting a good set of CP/M disk images for my 128. One person offered to send me a bundle of images, but never followed through. So I'm asking if anybody has a good collection of CP/M disks to share.
 
All are "correct" but IIRC you need the latest if you also want to use a 1581 drive. I can't remember what differs between the two earlier of the three.

There are user-modified versions that I think greatly speeds up the I/O. I can't remember the details but IIRC the Commodore ones, or maybe the early Commodore ones, did the Z80 / 8502 processor switch and whatnot a character a time to write text to the screen. Add the indirect I/O to the 80 col screen memory and you ended up with a super slow console. IIRC the output from DIR was so slow that you read the text faster than it would appear on screen, even when ignoring the part where you actually wait for disk I/O. I might misremember this though.
 
MiaM said:
All are "correct" but IIRC you need the latest if you also want to use a 1581 drive. I can't remember what differs between the two earlier of the three.

There are user-modified versions that I think greatly speeds up the I/O. I can't remember the details but IIRC the Commodore ones, or maybe the early Commodore ones, did the Z80 / 8502 processor switch and whatnot a character a time to write text to the screen. Add the indirect I/O to the 80 col screen memory and you ended up with a super slow console. IIRC the output from DIR was so slow that you read the text faster than it would appear on screen, even when ignoring the part where you actually wait for disk I/O. I might misremember this though.
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No I don’t have a 1581. I only have two 1571 drives.
 
I'm sorry I don't have time right now to get out my disks but I setup my newly acquired C128 this summer for CP/M and I used CPMY2K.D71. This has been working well. I think I also used a version that was setup with the Z-System successfully. And I definitely agree with needing two 1571 drives. I have tried it with one 1571 and one 1541 and it is much trickier to get the system up to a more reasonable speed. It requires me to set the 1541 to drive 10 using a basic code program before booting CP/M. I will get back to this project this summer but for now I have no time due to my business is wood and gas stoves and I am crazy busy this time of year.

Seaken
 
Correction, I set the 1541 to Drive 9. This put the 1571 at Drive A and the 1541 at drive B in CP/M.

I looked at my utility disk and it says UTILCPM.D71 and ZPM+UTIL.D71. But honestly, I don't know if these are the names on Zimmers or if I made them up myself.

If I were you I would start with the CPMY2K.D71 file and then try the other files on Zimmers until you get a system that works for you.

Seaken
 
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