Implementation All versions of this emulator emulated the 'user' subset of the 68EC040 instruction set with a 68020/68030 exception stack frame. Prior to Traut's arrival there, Connectix had released Speed Doubler, which included an even faster PowerPC 68k emulator. A later version, using dynamic recompilation, was developed by Eric Traut, who later worked on successful emulation projects at Connectix such as Virtual Game Station and Virtual PC. Origins The first version was written by Gary Davidian, who had originally created it for use on the Motorola 88000 CPU, used in Apple's abortive first attempt at a RISC target platform.
With a few exceptions, notably Connectix's RAM Doubler, the emulator ran all software with no noticeable impact other than lower performance relative to the same program when compiled for PowerPC. This emulator enabled running applications and system code that were originally written for the 680x0-based Macintosh models.
The Mac 68k emulator is a software emulator built into all versions of the classic Mac OS for PowerPC.
