Since PBP handles the 16 (31) bit math, and certainly knows the results of the 8 bit operation, the writers of PBP *could* provide us with an overflow/underflow flag (PSTATUS?). If they really wanted to.
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Re: limiting to "no less than" zero
Since PBP handles the 16 (31) bit math, and certainly knows the results of the 8 bit operation, the writers of PBP *could* provide us with an overflow/underflow flag (PSTATUS?). If they really wanted to.
Charles Linquist
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