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Motorola 68000 Processor (CCR:V)

Hi,
I do not quite understand the V(overflow) in the CCR of the motorola 68K processor.
I hope someone can explain to me in details of it.
Thanks in advance.
04/15/09 Added Programming Languages and Assembly Zones - Callandor, Hardware Zone Advisor

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If there is an Add or Sub(Byte/Word/Longword) involved is the above concecept still applicable?
I was just trying to add another brain to this as no one else tried.
But, you are already getting beyond the programming capacity of this non-programmer's brain.

I think what you are looking for begins on page 149.
http://books.google.com/books?id=JPi9zrjFzMEC&pg=PA151&lpg=PA151&dq=Motorola+68000+overflow+ccr+v&source=bl&ots=K_S4Q1WaaH&sig=owt9L9VTfQ1YkrgSLbi4hoeqff0&hl=en&ei=M57lSfKQBKGCtgPd1OWWBA&sa=X&oi=book_result&ct=result&resnum=9#PPA150,M1

You might wanna ask a mod to move this into a programming zone. Us hardware guys lurk in "CPU Processors" and your question is a programming question. You'd get a better response in another zone.
- Use the "Request Attention" Link.