Re: CP/M disks

If the CP/M virtual disk is in a PRG or SEQ file that can be read I would be able to add a directory viewer to CBM-Transfer (aka cbmxfer). I don't think the CP/M disk structure is too complicated.However, if like the ones in your zip file, it uses a REL file then I won't be able to (easily) support it. In such cases I think you could probably find the CP/M directory sectors using a regular Hex Editor/Viewer. CBM-Transfer has a hex viewer, which has options to view in a more cbm-friendly format. Or, for windows I recommend the "HxD" editor.
Steve

      From: "Ruud@Baltissen.org" <Ruud@Baltissen.org>
 To: cbm-hackers@musoftware.de 
 Sent: Saturday, June 3, 2017 6:34 AM
 Subject: CP/M disks
   
Hallo allemaal,


First, the CP/M disks for the CBMs can be found here:

    http://www.baltissen.org/temp/8050cpm.zip


Then FYI: except starting up a boot disk or a program I didn't do 
very much with CP/M on the C128. Therefore quite some lack of 
knowledge. Please, bear with it :)

Three question:
- I more or less always thought that C128 CP/M disks were a mix of 
Commodore's GCR format and one or another MFM format. But the first 
disk I tried to create an image of turned out fine. Second disk, a 
CP/M boot disk: fine as well. third disk, another boot disk: nope. 
But as D64 it turned out fine as well. The question: what is normal?

- Is there a quick way to find out whether I'm dealing with a D64 or 
a D71? I know tell the program to treat the disk as a D71. It first 
reads track 1 and then 36. If that goes wrong I know enough. But the 
time consuming part is Ctrl-C and resetting the ZF by removing and 
reinserting the USB plug.

- Opencbm provides the tools for displaying the directory. But not 
for CP/M disk AFAIk. Neither CbmXfer. Unless I overlooked something. 
I have run and still run in various CP/M disks were the text on the 
labels faded away. Is there a tool to see their director?


Many thanks in advance!


--
  
Kind regards / Met vriendelijke groet, Ruud Baltissen
www.Baltissen.org







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