Guys, I'm loving this stuff. This is awesome. Keep em coming. Eric KD5UWL
> On Jul 11, 2015, at 8:28 PM, Clement T. Cole <[email protected]> wrote: > > Below > > Sent from my iPad > >> On Jul 11, 2015, at 8:42 AM, Rhialto <[email protected]> wrote: >> >> I recall reading that the whole RISC thing was more or less started with >> compiler writes for the 360 noticin that in practice they only used a >> rather limited subset of the available instructions > > Not quite true. What started was a paper by an IBM fellow (John Cox). What > John noted was that most of the 360/370 systems used a micro architecture > below the basic 360 ISA. This micro architecture was always simpler. By this > time the assembler vs HLL debate was pretty much over and people were writing > in at least systems programming languages (C, PL/360, BLISS much less fortran > PL/1 and the like). John asked since we were using optimizing compilers > would it not make more sense for the compiler to just target the microengine > directly. > > Patterson looked at Cox's work at took the next step. Let get rid of > microengine and reduce the basic instruction set. The term RISC was coined > in Dave's paper and the debate was started 😅 > > Clem > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
