DEC Pro 3xx archives

Bill Degnan billdegnan at
Thu Jan 21 22:13:41 CST 2021

I could upload LHA if you need a copy.  This is what I used back in the
early 90's, because one could incorporate it with DOS batch files nicely

On Thu, Jan 21, 2021 at 8:43 PM Paul Koning via cctalk <
cctalk at> wrote:

> I recently ran into an archive of various Pro 300 items, mostly from DECUS
> I believe.  That includes a full P/OS 3.2 distribution including (!)
> DECnet/Pro if I saw that right.
> It's at
> What makes things somewhat painful is that it's LHA compressed Teledisk
> images, which is an ancient DOS based floppy imaging tool.  The
> instructions say to run Teledisk on a DOS system with a 5.25 inch floppy
> drive to write the images to RX50 floppies, which can then be used.
> If you don't have DOS handy, or would rather get floppy image files for
> use with Xhomer, this can work but it's a bit painful.
> I found there's a simpler way.
> 1. Decompress the LHA files.  On a Mac, the unarchiver (I think that comes
> with the OS?) handles that format. On other operating systems, I assume
> it's equally straightforward to find a tool that handles this.  You now
> have a pile of *.TD0 files, which are the TeleDisk format files.
> 2. From install LibDsk 1.5 (not 1.4).
> 3. Use the dsktrans tool you got from step 2 to convert each *.TD0 file to
> a raw image, like this:
>     dsktrans  -otype raw PRO177/177-21.TD0 proinstallv32.dsk
>    "raw" format means a straight sector dump in physical order; this is
> the format expected by xHomer.
> If for any reason you want a logical order image, for example to give to
> the SIMH "rq" device that emulates an RQDXn controller, you'll need a tool
> that reorders things.  I have one in my RSTS file system tool "flx" (V3 in
> Python, not the earlier 2.6 in C), "".  I can supply more details if
> needed.
>         paul

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