17 Dec
2022
17 Dec
'22
3:20 a.m.
On 12/16/22 16:02, Warner Losh wrote:
On Fri, Dec 16, 2022, 1:12 PM Dave Horsfall
<dave(a)horsfall.org> wrote:
On Fri, 16 Dec 2022, Dr Iain Maoileoin wrote:
The PDP-10 manual I spoke of is from 1971, and there were older
editions. For the PDP-7, this manual from 1965,
http://www.bitsavers.org/pdf/dec/pdp7/PDP-7_AsmMan.pdf, printed pages
38-40, does not mention "ASCIZ" specifically, but talks about assembler
directives "TELETYPE" and "ANALEX" that add a "termination
code" of 00
octal, for characters.
DEC also used SIXBIT, a truncated ASCII code that had printing
characters but no control characters, so no newline, etc. In that
scheme, 00 octal was SPACE. Table here:
https://en.wikipedia.org/wiki/Six-bit_character_code#Examples_of_six-bit_AS….
Dan H
I remember running into a .asciz directive n the
70s
“somewhere”. It was
an assembler directive in one of the RT11
systems??? or perhaps
the unix
bootstrap and/or “.s” files - when I get some
time I will go
read some
old code/manuals.
MACRO-11 on RSX-11D seems to ring a bell...
I first encountered it on RSTS/E 6C in the MACRO-11 it had... But the
v6 macro assembler from DEC via Harvard that eventually wound up in
2BSD is older and dates to 1977 or so.
Warner