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Any way to image 8" CP/M disks or convert to 5.25"

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    Any way to image 8" CP/M disks or convert to 5.25"

    It would be awesome if someone had a way to image 8" disks either for use in an emulator or just copied over to another format 5.25" disks (it would take two to hold the contents of one 8" disk), say Kaypro format.

    I recently came into possession of two very rare, complete CP/M games on 8" disk (Nemesis and Orbquest), and would love to make them available Web-wide. One is in an IBM disk format, and the other an unindicated format. The programs would work on any decent CP/M terminal, it's just getting them read by something and into a more usable format. The only 8" disk drives I have are for an S-100 add-on for an Exidy Sorcerer, which I have no software for.

    Any thoughts/suggestions/assistance? Thanks.
    Last edited by Bill_Loguidice; August 3, 2009, 12:13 PM.
    =============================
    Bill Loguidice, Author
    Managing Director, Armchair Arcade
    About Me

    #2
    Are they soft sectored or hard sectored? FM or MFM format?
    The 1.2MB HD floppy is very close to an 8" floppy and can be used with a simple adapter. Simple directions are at: http://www.classiccmp.org/dunfield/img/index.htm

    I use several 5.25" disks with my Tandy model II and Model 6000 computers using a similar adapter.

    Comment


      #3
      It's really easy to connect a standard 8" floppy drive to a PC. Slightly harder to find a PC/clone with a floppy controller that can read single density. But once you've done that, you can run Dave Dunfield's ImageDisk program and easily make usable disk images. In fact, ImageDisk comes with a test program that you can run easily from a 3 1/2" floppy to test the disk controller of any givin clone, so it's easy to sift through a pile of junk PC's to find a good one.

      I've just got an old PC with a suitable floppy controller, 8" drive and homemade adapter card, it wasn't hard to piece together. The hardest part is finding a power supply that will power an 8" drive! They need 24v, which most computer supplies do not provide.

      -Ian

      Comment


        #4
        Originally posted by kb2syd View Post
        Are they soft sectored or hard sectored? FM or MFM format?
        The 1.2MB HD floppy is very close to an 8" floppy and can be used with a simple adapter. Simple directions are at: http://www.classiccmp.org/dunfield/img/index.htm
        Wonderful stuff, but well beyond my technical expertise. Certainly I at least have the 8" drives in the Sorcerer's external S-100 chassis.

        I'll have to check at home what the exact disk formats are beyond what I said above.
        Last edited by Bill_Loguidice; August 3, 2009, 12:19 PM.
        =============================
        Bill Loguidice, Author
        Managing Director, Armchair Arcade
        About Me

        Comment


          #5
          Bill,

          As documented here previously and more graphically on my blog ....

          8" disks are pretty compatible with 5.25 HD diskettes in terms of number of tracks, sectors per track etc.

          Then we noticed that 3.5" tri mode drives are too. Since 3.5" media is just about available I documented the move to 3.5" format diskettes.

          Procedure to user 5.25" HD diskette drives
          http://majzel.blogspot.com/2009/03/c...diskettes.html

          Later Procedure to use 3.5" drives
          http://majzel.blogspot.com/2009/04/c...ch-floppy.html

          And then most importantly when you have the diskettes in 3.5" physical format it is a lot easier to use an IBM PC XT (as I do) to imagedisk these diskettes using the Dunfield Imaging Software . Which of course is
          http://www.classiccmp.org/dunfield/img/


          regards marcus bennett.

          Comment


            #6
            Wonderful information all, but is there a non-hack solution? Does anyone have a working 8" setup where they could transfer the files to 5.25" disk if I sent it to them?

            EDIT: Someone on my own Website suggested this: http://www.dbit.com/fdadap.html It's just a shame it's $40 plus supplies.

            I'd just really like some type of guarantee that something will work, rather than just experimenting a great deal. I realize that's unlikely, though...
            Last edited by Bill_Loguidice; August 4, 2009, 06:19 AM.
            =============================
            Bill Loguidice, Author
            Managing Director, Armchair Arcade
            About Me

            Comment


              #7
              Originally posted by Bill_Loguidice View Post
              It would be awesome if someone had a way to image 8" disks either for use in an emulator or just copied over to another format 5.25" disks
              With help from Chuck(G), I managed about a month ago, to get a setup working that will transfer data from 8" to 5 1/4" (180 or 360 KB), and 3 1/2".
              Drop me a PM, if you haven't already found a solution.

              Comment


                #8
                What about for formats and systems that are a bit more wonky? The imaging and writing of 8" disks (via an adapter from an 8" drive to a PC) using utilities on a PC pretty much handle the raw data regardless of the format, right?
                I got a TRS-80 Model II with two 8" drives but absolutely no software.
                [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
                --------------------------------------------------------------------------------------------
                [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

                = Excellent space heater

                Comment


                  #9
                  Originally posted by Lorne View Post
                  With help from Chuck(G), I managed about a month ago, to get a setup working that will transfer data from 8" to 5 1/4" (180 or 360 KB), and 3 1/2".
                  Drop me a PM, if you haven't already found a solution.
                  Thanks, Lorne I'll do that.
                  =============================
                  Bill Loguidice, Author
                  Managing Director, Armchair Arcade
                  About Me

                  Comment


                    #10
                    Originally posted by NeXT View Post
                    What about for formats and systems that are a bit more wonky? The imaging and writing of 8" disks (via an adapter from an 8" drive to a PC) using utilities on a PC pretty much handle the raw data regardless of the format, right?
                    As long as the format's fairly tame. GCR and other recording schemes, hard-sectored media usually require more extreme measures (e.g. a Catweasel).
                    Reach me: vcfblackhole _at_ protonmail dot com.

                    Comment


                      #11
                      Originally posted by Chuck(G) View Post
                      As long as the format's fairly tame. GCR and other recording schemes, hard-sectored media usually require more extreme measures (e.g. a Catweasel).
                      The model II is VERY tame. Standard is I FM Single Sided, Soft Sectored disk. I have a setup at home for making images for my model II.

                      Comment


                        #12
                        Originally posted by kb2syd View Post
                        The model II is VERY tame. Standard is I FM Single Sided, Soft Sectored disk. I have a setup at home for making images for my model II.
                        I know that--I've got a Model 16 here--and I think I have samples from every other Tandy system in my library. But--and this is my point--not all systems are so mundane.

                        One gotcha with RS boxes are the disks for the Model I--the directory sectors used different data address marks that are pretty much lie within the domain of the WD1771 and no other commodity controller. Fortunately, there are patches available to remove the dependency of the software on this.
                        Reach me: vcfblackhole _at_ protonmail dot com.

                        Comment


                          #13
                          Originally posted by Chuck(G) View Post
                          I know that--I've got a Model 16 here--and I think I have samples from every other Tandy system in my library. But--and this is my point--not all systems are so mundane.
                          Yep. The model II = Mundane. Any thing else, may or may not be. Your mileage may vary. Fortunatly, everything I have is pretty mundane except for the Northstar machine.

                          Comment


                            #14
                            They do indeed appear to be standard SS SD 8" disks. I have images of the disks though and the relevant instruction manual pages here (they can be enlarged by click "All Sizes"):

                            Nemesis:
                            http://www.flickr.com/photos/loguidice/3790021543/
                            http://www.flickr.com/photos/loguidi...n/photostream/

                            Orbquest:
                            http://www.flickr.com/photos/loguidi...n/photostream/
                            http://www.flickr.com/photos/loguidi...n/photostream/
                            =============================
                            Bill Loguidice, Author
                            Managing Director, Armchair Arcade
                            About Me

                            Comment


                              #15
                              Originally posted by Lorne View Post
                              With help from Chuck(G), I managed about a month ago, to get a setup working that will transfer data from 8" to 5 1/4" (180 or 360 KB), and 3 1/2".
                              Drop me a PM, if you haven't already found a solution.
                              Lorne has graciously agreed to help, so hopefully together we can make these things available to everyone. Thanks, Lorne, I'll get the disks out to you in a few days.
                              =============================
                              Bill Loguidice, Author
                              Managing Director, Armchair Arcade
                              About Me

                              Comment

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