[TUHS] ed.c on Unix v5

Noel Chiappa jnc at mercury.lcs.mit.edu
Sat Dec 19 23:56:03 AEST 2015

    > From: Mark Longridge

    > Not too sure about reversing getpid.o, but maybe possible with db?

Well, me, I'd just use 'od' - but then again, I have ucode for disassembling
PDP-11 octal! :-) (OK, OK, so a lot of the less common instructions I have
to look up! :-)

But, seriously, yeah, 'db' is probably the way to go.

FWIW, it's possible to get 'adb' running under V6 without much (any?) work,
too. Although maybe it needs the 'phototypesetter' C compiler? I'd have to

There's also a 'cdb' running around (I found a copy on the 'Shoppa disks'),
which is basically 'db' but augmented with a few useful commands - maybe stack
backtrace, I don't recall the details, the documentation in on my V6, and I
don't feel like spinning it up just to look for that.


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