[HECnet] SIMH TOPS-20 question --> recipe for handling Tops20 install tapes --> MTBOOT

[R. Voorhorst]

I do not see that problem and I posted it here somewhat earlier:

 

Swbx04> att -f tu0 simh g:\temp\bb-d867e-bm_tops20_v41_2020_instl.tap-1

Swbx04> b tu0

 

And on console:

 

MTBOOT>

 

The first must be MTBOOT else you cannot load de monitor with /L and ?G143, so no skipping filemarks are needed as the monitor is the first file.

Mark well, it is format simh=tps!

 

The tap-1 extension is because 7-Zip found another file .tap was already there (the old one).

However I could not run dumper from the tape when trying it in install mode, so after DLUSER I got no further, but I did not test that any further for lack of need.

 

Reindert

 

 

From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Thomas DeBellis
Sent: Saturday, 25 December, 2021 20:47
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] SIMH TOPS-20 question --> recipe for handling Tops20 install tapes

 

Try skipping forwarding one or two file marks.  There was some kind of stuff at the beginning of the tape that I didn't recognize.  The monitor was after two file marks.  So do a rewind then skip forward one file mark and maybe mtboot will be there.

On 12/25/21 2:20 PM, Paul Koning wrote:

 





On Dec 25, 2021, at 5:29 AM, R. Voorhorst <R.Voorhorst at swabhawat.com <mailto:R.Voorhorst at swabhawat.com> > wrote:

 

I think Paul cannot get these files loaded on his Tops20 V4.1 system from hecnet, being barred by lacking decnet and/or Kermit functionality.

 

In the end (!) the tape recipe works as follows:

 

Get a FRESH  copy of tape BB-D867E-BM_TOPS20_V41_2020_INSTL.TAP-1 (after unzip) from Pdp10 archive into a host directory.

 

In simh when the monitor Tops20 V4.1 has been fired up or before:

ATT –F TU0 SIMH G:\TEMP\BB-D867E-BM_TOPS20_V41_2020_INSTL.TAP-1        or your favorite location

 

 

I found that SIMH is happy attaching it with -f tpc -- previously I had misread the messages printed by that command and thought it had an error.

 

So according to the installation manual, that tape is the "install" tape and is supposed to be bootable.  But if I mount it and issue "boot tu0", nothing happens.  When I stop simh it tells me PC is 0.

 

            paul

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.sonic.net/mailman/private/hecnet-list/attachments/20211225/9bb7ed2f/attachment.htm>