27 Feb
2015
27 Feb
'15
1:18 p.m.
On 2015-02-27 20:52, Eric Smith wrote:
On Fri, Feb 27, 2015 at 11:27 AM, Chuck Guzis
<cclist at sydex.com> wrote:
No, C was developed for/on the PDP-11. Unix was originally implemented
on a PDP-7, but that was all in assembler. It was then ported to the
PDP-11, and then rewritten in C.
And yes, the ++ and -- was not related to the PDP-11 instruction
argument forms, even if they make some of it easier. This has been
publicly explained by DMR in the past. The post/mail should be easy to find.
There is a second discussion about C and the PDP-11, which centers
around the floating point mode, which might actually come from the
PDP-11 architecture peculiarity. (I'm sure someone can dig up the
details of that one if they are interested.)
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
It seems to me to be very strange that today
we're coding in a language that
was developed for a PDP-11 minicomputer.
Developed for the PDP-7, actually. Contrary to popular belief, the
"++" and "--" operators were NOT the result of the PDP-11 addressing
modes.