> > I'm actually pretty happy that people are arguing over subtleties in
> > my proposed answers, rather than thinking that the questions are poor
> > :-)

Glad to see that.

>=20
> In most cases problem is not in the question but in the answers. "when th=
e
> microprocessor is no longer busy" - busy doing waht? executing an
> instruction? or a micro-cycle? or a user-level application?
>=20
> On most chips a) is definitely wrong: an interupt is handled after
> *each* instruction. You can of course argue that "within several instruct=
ion
> times" is included within "after each instruction", but I would consider =
that
> argumentative.

Which is why I also added the caveat that the examiner needs to rely on the=
 term 'usual' in the question to get around arguments over looping instruct=
ions (e.g. block move instructions which can be interrupted after each byte=
/word/whatever the move size is cycle) to have the answer as 'after each in=
struction cycle'.



--=20
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