20 Oct
2019
20 Oct
'19
1:38 p.m.
In `UNIX Assembler Reference Manual,' Dennis credits Knuth
for numeric temporary labels, with a reference to volume 1
of The Art of Computer Programming.
I'm several thousand kilometers from my copy of Knuth (though
rather nearer to Knuth himself, albeit not within asking
range), so I'll leave it to others to track down the exact
reference.
Norman Wilson
Toronto ON
(temporarily Sacramento CA)
21 Oct
21 Oct
2:05 p.m.
New subject: 1: jmp 1b
Norman Wilson <norman(a)oclsc.org> writes:
In `UNIX Assembler Reference Manual,' Dennis
credits Knuth
for numeric temporary labels, with a reference to volume 1
of The Art of Computer Programming.
I'm several thousand kilometers from my copy of Knuth (though
rather nearer to Knuth himself, albeit not within asking
range), so I'll leave it to others to track down the exact
reference.
TAOCP 1 (1968), page 147:
"Local symbols have a different nature; we write, for example 2H
("2 here") in the location field, and 2F ("2 forward") or 2B
("2 backward") in the address field of a MIXAL line:
2B means the closest previous location 2H
2F means the closest following location 2H
[...]
The idea of local symbols was introduced by M. E. Conway in 1958,
in connection with an assembly program for the UNIVAC 1."
This is the originator of Conway's Law, btw. I could not find
more detail about this assembler.
--
Leah Neukirchen <leah(a)vuxu.org> https://leahneukirchen.org/
2:09 p.m.
New subject: 1: jmp 1b
I'm seldom more than a couple feet from my Knuth, Second Printing 1969,
$19.50 at the Tech Coop.
On page 147, Knuth credits
The idea of local symbols was introduced by M. E. Conway in 1958, in
connection with an assembly program for the UNIVAC 1.
On Sun, Oct 20, 2019 at 9:41 AM Norman Wilson <norman(a)oclsc.org> wrote:
In `UNIX Assembler Reference Manual,' Dennis
credits Knuth
for numeric temporary labels, with a reference to volume 1
of The Art of Computer Programming.
I'm several thousand kilometers from my copy of Knuth (though
rather nearer to Knuth himself, albeit not within asking
range), so I'll leave it to others to track down the exact
reference.
Norman Wilson
Toronto ON
(temporarily Sacramento CA)
1658
days inactive
1659
days old
2 comments
3 participants
participants (3)
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John P. Linderman -
Leah Neukirchen -
Norman Wilson