29 Jul
2014
29 Jul
'14
4:10 p.m.
That's interesting; I was never a "down-n-dirty" assembly language
programmer on the 68k but I always had casually assumed that the 68030 was
a strict superset of the 68k ISA as implemented in the '020... Now my
curiosity is piqued... I'll be dipping in and out of those datasheets all
night ;)
Best,
Sean
On Tue, Jul 29, 2014 at 6:02 PM, Eric Smith <spacewar at gmail.com> wrote:
On Tue, Jul 29, 2014 at 2:21 PM, Jecel Assumpcao Jr.
<jecel at merlintec.com> wrote:
And before that Motorola had the 68030 dump
practically all of the
modular programming stuff that had been added to the 68020 in order to
compete with the National 16032 and the Intel iAPX286. I don't remember
if there was a software solution to handle code that used the missing
instructions.
It wasn't a problem because there *wasn't* software that used the
missing instructions (CALLM, RETM).
So making that statement will result in someone pointing out that some
obscure piece of software somewhere used them, but that basically
proves the point.