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- THe one thing I'd like to say in response is that:
- Liken and Quorum both have to emulate the processor, like SoftPC. The NeXT
- on the other hand has a 68K family processor. So instead of emulating the
- whole processor you grab the graphics and system calls. This is a lot different
- than SoftPC and the emulation of a PC on NeXT hardware. This is the big reason
- that SoftPC is slow. It not only has to emulate the processor but it has to
- intercept graphic calls to the bios and hardware. A much more difficult job
- than what's done in Executor. Liken is the same in that respect.
-
- I would say that Executor is more in the same line of emulators for the Mac that
- run on the Amiga and Atari, that is same family of processors so instruction
- set mapping or emulation is not needed.
-
- I understand that for the Atari and Amiga you need the ROMS, etc.
- I'm not trying to take anything away from Executor, I think it's a great
- program. But I also think that SoftPC and Liken were more difficult to write
- just because you have the added difficulty of supporting the native processor
- that the stuff originally ran on through software.
-
- I've written a software emulator for a vector processor for a PC. This
- included all registers and a couple of vectored interrupts. Ran fine, but it
- was a pain to support interrupts.
-
- I hope you see my point.
-
-