From: Anton Sherwood (dasher@netcom.com)
Date: Mon Feb 02 1998 - 20:41:35 MST
: Harvey Newstrom <harv@gate.net> wrote:
: >Yes, backward compatibility is a sham. x86 chips are not compatible
: >with Pentium are not compatible with MMX, etc. Macs have the same
: >problem. The 86xxx motorola chips are not compatible with the PowerPC
: >chips. MacOS won't be compatible with Rhapsody.
Jeff Fabijanic writes
: Untrue. I have never encountered, nor have I ever heard of anyone
: who has encountered, a valid 680x0 (not 86xxx, btw) instruction
: that did not run correctly on a PPC chip (albeit in emulation).
For whatever it's worth, my old versions of Word (4) and Excel (3?)
bomb on my new PPC - illegal instruction. They being MS products,
I would not be surprised to learn they use undocumented instructions
which are not emulated.
Anton Sherwood *\\* +1 415 267 0685 *\\* DASher@netcom.com
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