Subj : Re: Running linux in vm on li
To   : Nightfox
From : Derision
Date : Mon Oct 29 2018 04:07 pm

 Re: Re: Running linux in vm on li
 By: Nightfox to Derision on Mon Oct 29 2018 09:49:50

>  De> It's actually more significant than that, even. The PowerPC's emulation
>  De> of the 68k is actually at the hardware level, rather than in software.
>
> Interesting..  I do remember hearing somewhere that Mac software for 68k
> sometimes ran better on the PowerPC - Probably due to the hardware backwards
> compatibility.

Absolutely. The earliest PowerPC chips, while faster overall the the 68040s
that came before them, didn't execute code quite as fast. So a 100Mhz PowerPC
601 actually performed 68k stuff slower than a 25Mhz 68040, but that was fixed
later on by adding cache and whatnot and, I think, dynamically recompiling some
of the code to native PowerPC.

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