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DAS: Decimal Adjust after Subtraction:- This instruction converts the result of subtraction operation of 2 packed BCD numbers to a valid BCD number. The subtraction operation has to be only in the AL. If the lower nibble of AL is higher than the value 9, this instruction will subtract 06 from lower nibble of the AL. If the output of subtraction operation sets the carry flag or if the upper nibble is higher than value 9, it subtracts 60H from the AL. This instruction modifies the CF, AF, PF, SF and ZF flags. The OF is not defined after DAS instruction. The instance is following:
Example :
Example : Write a program to move the contents of the memory location 0500H to BX and also to register CX. Add immediate byte 05H to the data residing in memory location, whose ad
) What is the difference between re-locatable program and re-locatable data?
need algorithm for multiplication in assembly with out mul function?
Program Translation Sequence Developing a software program to accomplish a particular task, the implementer chooses an appropriate language, develops the algorithm (a sequence
what is the hex value in ax after executing the instructions ax= 1E8A bx=4080 add al,bl sub ah,bh
The modes are determined by the contents of the control register, whose format is given in Figure These modes are: Mode 0: If a group is in mode 0, it is divided into 2 sets.
what will be the value of EAX after following instructions execute? mov bx, 0FFFFh and bx, 6Bh
segmentation and overlapping in assemble language
Any small project which can implement on any software. No need any external hardware approach.
You have to write a subroutine (assembly language code using NASM) for the following equation.
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