[tech2]

The emulation route was 68k to PPC (classic apps running on OS X), for x86 they went with fat binaries, unless I'm misunderstanding you?

[inspector-g]

68k to PPC had emulation, but also PPC to Intel with Apple's "Rosetta"

https://en.wikipedia.org/wiki/Rosetta_(software)

[tech2]

I stand corrected. Thank you.

[gsnedders]

There were 68k/PPC fat binaries too, though this was as much about compatibility with older systems as it was for performance (the emulated 68k system on PPC was quicker than any 68k hardware).