Before you type "No", hear me out. This has probably been discussed before, but long before the Intel switch was announced, Apple had developed "Marklar", a Intel-compatible Mac OS X port. While Intel ports of OS 10.0 and .1 seem pretty useless, did they include Classic with it at those early points? The article mentions it was "complete", and given that X did include Classic Environment at those points, I assume so.
However, besides the fact that even if it does exist, it's unlikely it will be leaked (a near-complete HL1 does exist for OS 9 but that's still MIA) and someone on Mac Garden said that if Apple wanted to port Classic Environment to Intel it would require re-writing lots of code to Intel standards (as in, Classic wouldn't just be able to take advantage of Rosetta). And at the time, Macs still even booted into OS 9.
We (should) all know of the Star Trek project, of which a prototype was developed in three months for x86 systems in the early 1990s. It looked like a Mac and had to run on very specific platforms, as well as porting for basic System 7 apps (like SimpleText), but 68k apps couldn't run on it at the time without additional porting.
Was it like that or did they truly make Classic Intel compatible?
