[rescue] systems with user modifiable microcode.

[Greg A. Woods]

[ On Wednesday, October 2, 2002 at 16:54:40 (EDT), dave at cca.org wrote: ]
> Subject: Re: [rescue] systems with user modifiable microcode.
>
> Am I correct in thinking that PALcode doesn't actually have
> access to any instructions that aren't already accessable
> though? It's more like library routines than microcode.

Mostly, though there are indeed some PALmode-only opcodes.

> I'm
> guessing a major feature is that you can make a series of
> instructions atomic by using PALcode?

Yes, that's another purpose of PALcode.

> That would seem to be
> important when it comes to playing with the MMU and such...

indeed!  ;-)

-- 
								Greg A. Woods

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