*** *** *** * Unsigned BCD Subtraction *** *** *** This routine performs a 2 Digit Unsigned BCD Subtraction. It is assumed that the two BCD numbers to be subtracted are in locations Num_1 & Num_2. The result is the difference of Num_1 & Num_2 ( Num_2 - Num_1) and is stored in location Num_2 and the overflow carry is returned in location Num_1. Performance : Program Memory : 31 Clock Cycles : 21 ( worst case )

BCD_SUB.ASM

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