17 Jan
2017
17 Jan
'17
2:33 a.m.
And DEC used octal from the 1959 PDP1 through the VAX which was
announced on October 1977.
The PDP11 register front panel was painted to make front panel octal
programming easier - breaking out the three bit patterns.
Octal was deep in the DEC history and front panel flipping fingers.
I'll never forget 014747 (single instruction memory decrement test (move
the pc to address pc - 2...
Bill
Steve Johnson wrote:
The mainframes of the 60's and 70's all used
6-bit characters (and
often different encodings for the non alphanumeric characters). So the
Unix folks, including me, had experience with octal long before Dec.
Steve
----- Original Message -----
From:
"Warren Toomey" <wkt(a)tuhs.org>
Something I've been meaning to ask for a while: why Unix and octal
on the
PDP-11? Because of the DEC documentation?
--
Digital had it then. Don't you wish you could buy it now!
pechter-at-gmail.com http://xkcd.com/705/