My Second Mac

Fred Cisin cisin at
Sun Jan 7 14:56:36 CST 2007

On Sun, 7 Jan 2007, Scott Quinn wrote:
> My guess has to do with processors: i80486 binaries can run just fine
> on Pentium+ systems.

so can 8088 binaries.  (With occasional exceptions that don't typically
show up in common usage (such as PUSH SP))
But not all Pentium+ binaries will run on 8088, or even i80486.

There seemed to have been a cultural difference between Motorola and

Motorola would design each major generation from scratch, thus producing a
much better processor, but without legacy software.

intel, OTOH, would bend over backwards to try to maintain 4004

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