6 Nov
2017
6 Nov
'17
3:08 a.m.
On 11/5/17 3:12 PM, Clem cole wrote:
IIRC Leffler and Shannon had something
for a compiler backend at Case when they started their PE port, although
they had to do some hacking as the model they had was different from any
previous PE (they had to deal with a number of 7 bit and 24 bit issues). I
believe one of the attractions to the PE was they model the Research folks
had access was 32 bits and the PDP-11 was 16. I’ll try to ask Sam with
what they started.
It was a Harris /6 (I don't know how much that has in common with any PE
model), Sam started with Johnson's PCC, and it was apparently a huge PITA.
I have a copy of his thesis describing the work.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet(a)case.edu http://cnswww.cns.cwru.edu/~chet/