There was an Apple II peripheral card for the IBM PC:
https://www.diskman.com/presents/trackstar/
> (Or vice versa - plugging an Intel card into a Mac and running Windows programs on the hardware.)
The PC Transporter was a peripheral card for the II GS.
There was also an Apple IIe card for the Mac LC I think.
There was an Apple II peripheral card for the IBM PC:
https://www.diskman.com/presents/trackstar/
> (Or vice versa - plugging an Intel card into a Mac and running Windows programs on the hardware.)
The PC Transporter was a peripheral card for the II GS.
There was also an Apple IIe card for the Mac LC I think.