From: Dave Horsfall <dave@horsfall.org>
To: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] Software Archaeology Challenge?
Date: Tue, 7 Apr 2020 12:03:01 +1000 (EST) [thread overview]
Message-ID: <alpine.BSF.2.21.9999.2004071104580.36443@aneurin.horsfall.org> (raw)
In-Reply-To: <CAC20D2OVA3ODmHEPq4gOL8Q4MVwW9u_wAyrWKHVrAJyZZbweNg@mail.gmail.com>
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On Mon, 6 Apr 2020, Clem Cole wrote:
> He used RT-11 to copy each disk pack sequentially. That's an ANSI VOL1
> record. Sadly it's not a full ANSI tape (long story -- it needs HDR1
> records VMS would have been able to mount it as a foreign tape.
[ Probably getting COFF-ish now ]
Blimey, but that takes me back to my OS/360 days... I once wrote a little
utility (in assembly, of course) that dumped all the HDR/VOL/etc records.
It was a swine to debug (overnight processing because I was a student); I
had to leave instructions to the operator to "ABEND with core dump" if the
tape merely oscillated back and forth (which it did early on).
The first time, I got a snotty note from the operator saying that after
watching the tape for half an hour he had to kill it; ah, the joys of
overnight remote debugging... Later on I became a volunteer operator on
the graveyard shift and was able to sneak in the occasional "foreign
order".
-- Dave
next prev parent reply other threads:[~2020-04-07 2:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 22:11 Warren Toomey
2020-04-06 22:48 ` Henry Bent
2020-04-06 22:59 ` Dennis Boone
2020-04-07 1:59 ` Warner Losh
2020-04-06 23:47 ` Warren Toomey
2020-04-07 0:04 ` Henry Bent
2020-04-07 0:18 ` Henry Bent
2020-04-07 0:59 ` Clem Cole
2020-04-07 2:03 ` Dave Horsfall [this message]
2020-04-07 2:40 ` Jason Stevens
2020-04-07 3:39 ` Warner Losh
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