文件名称:BCD_SUB
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*** *** *** * 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 )-******************* 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 )
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 )-******************* 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 )
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BCD_SUB.ASM