[rescue] Mac Appliance

[rescue at sunhelp.org]

mcguire at neurotica.com writes:

>  Preemptive multitasking in MacOS isn't something "waiting to be
>developed" or "lagging behind other OSs".  It was a conscious design
>decision to implement cooperative multitasking in MacOS instead of
>preemptive.

I think it was forced on them by the fact that they were trying to
maintain compatability with 68000 machine software in the early
days, no?

There certainly wasn't a conscious decision to not allow a process
to request more memory as needed, and force the user to screw with
memory allocations setting by hand. It was forced on them by needing
to be compatible with hardware that didn't do VM etc properly.

If the Mac had been introduced on the 68020 instead of the 68000,
things would have been very different.

-------- David Fischer --------- dave at cca.org --------- www.cca.org --------
-------- If it wasn't for good luck, I wouldn't have no luck at all. -------