Very Computer

I've searched through the newsgroup for books but didn't really find
one that suits my needs.  I'm looking for a book on generic
microprocessor architecture (something that covers common components
needed for microprocessors like IRQ's, vector tables, IMMR's, MMU's
and how they function) .  Something like a reference book to look up
terms and stuff e.g. nomaskable interrupt, interrupt priority levels
etc. I work with a whole variety of processors and finding a handy
reference book would be useful.  I find looking through processor
manuals, they already expect you know a certain level of
microprocessor architecture.  It's that stuff they assume you need to
know I would like to find a book on.

Any suggestions would be greatly appreciated.

Thanks,

Elton Lum