On Mar 19, 2011, at 6:40 AM, Olin Lathrop wrote:

>> I'm sort of looking for something that
>> describes the features common across the various chips; I read the
>> "Programmer's Reference Manual" and found it rather divorced from the
>> details (and so ... generic.)
>
> Then you didn't read it very well.  All the generic core details are =20
> in there.

Core details, sort of.  Perhaps I'm looking for the non-core details.
For example, the PRM describes "up to 8 non-maskable traps", but =20
individual chips seem to implement only a subset of that number.  Are =20
all 8 types of trap "defined" (but not all implemented on some chips), =20
or is 8 a convenient power of two that they haven't decided how to =20
fully utilize yet?

BillW

--=20
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