[Unix-jun72] more corrections

John Cowan cowan at ccil.org
Thu May 1 15:02:26 EDT 2008


Brad Parker scripsit:

> yes, I think 0405 and 0407 a.out's are different.
> 
> I believe the V7 headers are 16 bytes and the text section starts at zero.
> (heh, memory management)

Note that the whole point of the magic number being what it is, is
that it's a PDP-11 unconditional branch instruction to skip the rest of
the header.  That way the a.out file could be loaded header and all and
just started at its beginning by jumping into it.

-- 
Samuel Johnson on playing the violin:           John Cowan
"Difficult do you call it, Sir?                 cowan at ccil.org
 I wish it were impossible."                    http://www.ccil.org/~cowan



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