[Simh] Extracting SimH Tapes on Linux

[Stephen Merrony]

OK - I think I remember how I did this before.

I connected a physical tape drive to my Linux box, used tapecopy to 
write the SimH-format tape image to tape, then used standard Linux 
utilities to read individual 'files' off the tape.

What I was hoping for was a way to skip the physical tape stage and read 
'files' (i.e.blobs) from SimH-format tape images.

/Stephen Merrony
http://www.stephenmerrony.co.uk//dg/

On 30/11/2014 08:27, Rob Doyle wrote:
> For the PDP10, there are utilities that can be compiled for linux that
> can extract files from tape images independent of SIMH.
>
> http://www.36bit.org/dec/software/unix-util/
>
> tapecopy, tapedump, and t10backup are part of that package. There is 
> also read20 that can extract files from a TOPS20 dumper tape.
>
> Rob.
>
> On 11/29/2014 3:02 PM, Stephen Merrony wrote:
>> I should have said that the tape image contains a number of data files -
>> which I can process - but I need to extract each individual files
>> first.  I did do this a while ago using tapecopy or tcopy or mt or
>> something-or-other...
>>
>> /Stephen Merrony
>> /
>> On 29/11/2014 16:48, Clem Cole wrote:
>>>
>>> On Sat, Nov 29, 2014 at 9:32 AM, Stephen Merrony
>>> <steve at stephenmerrony.co.uk <mailto:steve at stephenmerrony.co.uk>> wrote:
>>>
>>>     extract a tape dump in SimH format
>>>
>>>
>>> ​Can you be a little more detailed here.  The file is a SimH format of
>>> the a tape.  But the tape itself has been formatted by the application
>>> on the OS that wrote it.
>>>
>>> eg.  if its a UNIX "dump" format tape you need:   something to under
>>> the SimH format and create a bytes stream to push into a program that
>>> understand the UNIX restore format - which also means you might have
>>> NUXI issues depend on the simulator that wrote it, since dump writes
>>> integers in native formats in the metadata.
>>>
>>> or if it's a TOPS "dumper" (aka backup)​ you will need something to
>>> under the SimH format and create a bytes stream to feed program that
>>> understand the PDP-10 dumper format.
>>>
>>> FYI: I used to have tools for the later part, although I have never
>>> run them on Linux. The last time i ran them was an Alpha under Tru64.
>>>   I'll have to go digging.
>>>
>>
>>
>>
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