Trailing-Edge
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PDP-10 Archives
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decus_20tap1_198111
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decus/20-0002/bail.bwr
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On Tops-10, $S will work best if you load with SAILOW, i.e. you use
the sharable segment. STEPIT will try to trace all procedure calls.
It will fail (giving Ill mem ref) for calls to runtime routines.
The way it detects runtime routines is that they are in the high seg.
So $S will only work if the runtimes are in the high seg and
everything else in the low seg. I.e. if you use the sharable
segment. Things will almost work if you just remember not to $s
through runtime calls.
On Tops-20 this is not a problem, because of the structure of
the sail core image.