10 Jan
2017
10 Jan
'17
5:03 a.m.
From: Brent Hilpert
>>> One assembler doc uses a prefix of
"&o"
So the answer is, by modern expectations the old
standard would be
ambiguous or misleading.
Well, the ideas of 'assembler' and 'standard' don't really go together
in my
mind... :-)
But seriously, I don't know how many different PDP-11 assemblers there were,
but the two _main_ ones (DEC's, and Unix's) both use the same numeric
convention (although they differed in other ways, probably because of the
CTSS/Multics erase character convention): a sequence of digits is an octal
number, unless there's a trailing '.', in which case it's decimal.
(Well, technically, DEC had PAL-11 and MACRO-11, but PAL-11 was basically a
subset of MACRO-11, and used the same number syntax.)
I've never heard of that '&o' bizzaro-stuff - where did you find that?
Noel