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CP/M System Disks - Please Read

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    #16
    Got a URL, leed?

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      #17
      Um... dat's LEEB...

      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.

      If only the cp/m3 worked...
      Last edited by leeb; August 9, 2010, 05:50 PM.

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        #18
        Sorry, leeb.

        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.

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          #19
          Yes, I noticed that when I opened it in notepad... last nite.

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

          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 ) 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!

          Comment


            #20
            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.

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              #21
              I really didnt either.... just had to say it.

              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.



              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 ...
              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!
              Last edited by leeb; August 12, 2010, 07:40 PM.

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                #22
                Originally posted by leeb View Post
                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!
                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.)

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                  #23
                  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...

                  Comment


                    #24
                    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
                    Teach your children how to think, not what, and hold 'em close, not tight.
                    _____________________________________________

                    Please visit the Vintage-Computer Wiki. Contributers welcome.

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                      #25
                      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.
                      Proud owner of 80-0007
                      http://www.f15sim.com - The only one of its kind.

                      Comment


                        #26
                        Anybody got a system disc for a LOS C25 CP/M system?

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                          #27
                          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

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