🚀 go-pugleaf

in article <124529@sun.Eng.Sun.COM>, katin@skylark.Sun.COM (Neil Katin) says:

> You *do* need to flush the on-chip 68030 cache when doing task switches
> because it is a virtual cache.  You probably don't need to flush any
> off-chip 68030 caches because they are physical caches (since the 68030
> has an on-chip MMU).

Undoubtedly why Motorola went to physical caches on the 68040.  The main
problem with physical cache, of course, is speed, but they apparently got
that licked as of the 88k system.  You rarely have a choice with off-chip
caches -- they tend to be physical, slow, and/or expensive.

> Neil Katin
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