Sorry - I misread the post thinking Zane wanted to get raw disk images. For the actual CP/M contents you can use cpmtools: http://www.moria.de/~michael/cpmtools/ Cpmtools has disk definitions for the Osborne 1 and Osborne Nuevo/Vixen/4 so it is rather painless.
Best regards Tom Hunter On Wed, May 26, 2021 at 12:38 AM Fred Cisin via cctalk < [email protected]> wrote: > Imagedisk is great for making images. > > BUT, the original request is not for images, it is for the previous > owned wanting access to be able to use the content of the FILES that are > in those images. > > > On Tue, 25 May 2021, Tom Hunter wrote: > > > Dunfield's ImageDisk reads and writes them just fine on most older PCs > with > > a decent floppy controller. > > As Chuck G writes "TestFDC" will tell you if the floppy controller is > > usable for imaging. > > > > Best regards > > Tom Hunter > > > > On Tue, May 25, 2021 at 2:26 AM Fred Cisin via cctalk < > [email protected]> > > wrote: > > > >> There were two Osborne floppy formats. Both CP/M. > >> > >> IIRC, the original format was "Single Density" (FM), 10 sectors per > track, > >> with 256 bytes per sector (similar to the TRS80-Model-1. That will > >> require FM/SD capability. Most NEC FDCs did not support that. Dave > >> Dunfield has a test program that will tell you whether your FDC can > handle > >> it. > >> > >> Then, they switched to "Double Density" (MFM) IIRC: 5 sectors per track, > >> with 1024 bytes per sector. Any PC FDC with access to INT13h and INT1Eh > >> will work with appropriate software. (NOT external USB drives) > >> > >> > >> WITH appropriate software, a flux transition device, such as your > >> Catweasel, could do it. > >> > >> > >> > >> On Mon, 24 May 2021, Zane Healy via cctalk wrote: > >> > >>> A photographer I know contacted me last night asking about reading > >> Osborne 1 floppies. What does it take to read these? > >>> > >>> The only Catweasel board I have is the old Zorro 2 board for the Amiga. > >> I do have 5.25” floppy drives. Neither of us have an Osborne anymore (I > >> think mine went to Jim Willing). > >>> > >>> Zane >
