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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 :
8255 Programmable Peripheral Interface Intel's 8255 A programmable peripheral interface provides a nice instance of a parallel interface. As shown the interface have a control
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SBB: Subtract with Borrow :- The subtract with borrow instruction subtracts the source operand and the borrow flag (CF) which might reflect the result of the past calculations,
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how to write the alp for matrix addition in microprocessor 8086?
RET : Return from the Procedure:- At each CALL instruction, the register IP and register CS of the next instruction is pushed to stack, before the control is transferred to the
Write a procedure to read a text file and copy its contents to another text file using 8086 assembly language .
what will be the value of EAX after following instructions execute? mov bx, 0FFFFh and bx, 6Bh
Signal descriptions of 8086 : described below are common for the maximum andminimum mode bothdata lines AD15 -AD0: These are the time multiplexed andmemory I/O address. Addre
Instruction Formats A machine language instruction format has 1 or more number of fields linked with it. The first field is known as operation code field or op code field, whic
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