After a series of delays, Microsoft Corp. has started to ship a version of Virtual PC that is compatible with Apple Computer Inc.'s G5-based systems. Virtual PC 7 is a complete emulation of standard PC hardware, and is capable of running any application compatible with the Pentium processor, allowing users to run a full version of Windows and Windows applications in a virtual machine on their Macs.
The previous version of the product—Virtual PC 6.1—was incompatible with G5-based Macs. According to Microsoft, the product took advantage of a feature of G3 and G4 processors, known as "pseudo little-endian mode," which was not present in G5 chips. Because of this, much of the product had to be rewritten from the ground up for G5 compatibility.
News source: eWeek
