>><I think one point you are both missing out on is that preemptive multitaskingThis is incorrect. Apollo DN600 (do not confuse with DN660), 400 and 420
>><requires hardware support not available on a 68000.
>>Right. So how did Sun, Apollo, Amiga, Sage, Stride and a multitude of
>Neither Sun nor Apollo ever marketed systems based on the 68000,
are all 68000 based machines. They use an arrangement of Dual 68000
cpus to allow preemptive multitasking. Basically, one of the processors
does the error handling when a page fault is taken while the other
preserve machine state (making it restartable).
I also believe that the SUN model 1 series use dual 68000 cpus. The
Carl G. Heinzl apollo.UUCP
>Not that this implies that multi-tasking is impossible on the
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