Re: Apple Drops Backward Compatibility for Next MacOS

[shack@frii.com (Randy Shackelford)]

<pubpc1@library.ucla.edu> wrote:

> Well, I might agree with you.  The "PowerMac" is as different from a 680x0
> Mac as it is from a IIGS.  I would like to see Apple actually port GS System
> Software (GS/OS and the Toolbox) to native PPC code, though.  This would be
> more flexible than a mere emulator and be just like how the Power"Mac" runs
> 680x0 Mac software.

Wrong again. When the first Powermacs came out, some Apple guys were saying
that 68K emulation is easily done because only the processor is different,
the basic architecture is the same as on an '040 Mac. This makes emulation
a matter of translating the 68K code. This was done in the first generation
with an interpretive emulator, which was replaced with the dynamic recompil-
ation emulator. Emulating a IIgs would mean emulating the processor and all 
the hardware too.
I really can't figure out why anyone would want to run old underpowered IIgs
native apps on a new Mac.
This is messed up, first we had that Philip Mcdonnough dude (who has since
departed csa2) trying to convince people that a IIgs isn't an Apple II, now
we got a guy saying a Powermac isn't a Mac. 
--
Randy Shackelford                                 
shack@frii.com