On 2017-Jan-10, at 5:03 AM, Noel Chiappa wrote: >> 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
This one: http://mdfs.net/Software/PDP11/Assembler/AsmPDP.txt Reading more closely, the encoding has some relation back to BBC BASIC. I was beginning to wonder if it was some html character-encoding screwup.