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

So I'm left with figuring out how to pull files off of 12-bit OS/{2}78

- David

On Sat, Mar 12, 2022 at 5:55 PM Ray Jewhurst <> 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
> Get Outlook for Android <>
> ------------------------------
> *From:* cctech <> on behalf of David Schmidt
> via cctech <>
> *Sent:* Saturday, March 12, 2022 3:20:15 PM
> *To:* General Discussion: On-Topic Posts <>
> *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":
> - David

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