28 Oct
2014
28 Oct
'14
3:06 a.m.
yes: http://repository.cmu.edu/cgi/viewcontent.cgi?article=3241&context=comp…
I had a 60 running v7 years later. we also toyed with adding CSV/CRET but never did it
because we got an 11/70
On Oct 27, 2014, at 9:09 PM, Dave Horsfall
<dave(a)horsfall.org> wrote:
On Mon, 27 Oct 2014, Clem Cole wrote:
[...] because the CMU 11/40E had special CSV/CRET microcode which we
could not use on the 11/34.
The 40E had microcode whilst the vanilla 40 didn't? I thought only the 60
was micro-programmable; I never did get around to implementing CSV/CRET on
our 60 (Digital had a bunch of them when a contract with a publishing
house fell through).
The other things for those days, that has not yet
been brought up was
the famous "NUXI" problem. The PDP-11 byte swapping was idemic in the
code. When the first ports to system that were not the same
"endianess" came about - you would find strange things in memory.
Reminds me of the time when I used 2-char constants in case statements; my
boss yelled at me.
--
Dave Horsfall (VK2KFU) "Bliss is a MacBook with a FreeBSD server."
http://www.horsfall.org/spam.html (and check the home page whilst you're there)
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