Good point about the CP/M disk - actually it is read just fine with
cpmtools with this diskdef:
# PRO CP/M RX50 DZ format (Perhaps only 79 tracks should be used?)
diskdef dec_pro
  seclen 512
  tracks 80
  sectrk 10
  blocksize 2048
  maxdir 128
  skew 2
  boottrk 2
  os 2.2
end
So I'm left with figuring out how to pull files off of 12-bit OS/{2}78
disks.
- David
On Sat, Mar 12, 2022 at 5:55 PM Ray Jewhurst <raywjewhurst at gmail.com> wrote:
  I'm not sure what would be on the "System
Disks? but it's probably OS/78
 or 278. As far as the CP/M disks and the 8-bit component of the disks,
 those are for the Z-80 expansion card which Simh does not emulate.
 Ray
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 ------------------------------
 *From:* cctech <cctech-bounces at classiccmp.org> on behalf of David Schmidt
 via cctech <cctech at classiccmp.org>
 *Sent:* Saturday, March 12, 2022 3:20:15 PM
 *To:* General Discussion: On-Topic Posts <cctech at classiccmp.org>
 *Subject:* DECmate II disk image tooling?
 I have some disks that look like they're from a DECmate II computer,
 standard RX50K drives.  The disk images all look like they're a mix of
 12-bit (OS/78 or OS/278?) and 8-bit all on the same media.  I can't
 convince PUTR to make sense of the images, so I'm wondering if there is
 anything else out there that is likely to be able to examine the disk
 contents?  I'm really looking for PUTR-like functionality to list and copy
 files.
 Maybe SIMH could be configured to be a DECmate II and be fed the disks?
 I have a couple of disk images available in case anyone wants to try them
 out - they're purported to be "DECmate II CP/M 2.2 version 2.0" and
"System
 Disk ver. 2.0 8/24/87":
 
https://drive.google.com/drive/folders/1PD0TlUPiT7MIPEX6abEn33e7s3kSXp_H?us…
 - David