[rescue] Mac Appliance

[rescue at sunhelp.org]

mcguire at neurotica.com writes:

>  Preemtptive multitasking has nothing to do with virtual memory.  It
>can be implemented on anything (within reason) that has a clock
>interrupt...which the Mac certainly does, and did in its earliest
>implementation.

Oh, true.

I keep forgetting that insanely weird fact: the original Lisa had
paging but not pre-emptive multitasking.

Ok, so why did they go with cooperative? I don't believe it was 
considered a good idea. Pre-emptive had to have been considered
too "expensive" in *some* fashion...

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