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AAS: ASCII Adjust AL After Subtraction AAS instruction correct the result in the AL register after subtracting operation of two unpacked ASCII operands. The result is in unpacked decimal format. If the lower 4 bits of the AL register are higher than value 9 or if the AF flag is set to 1, the AL is decremented by the value 6 and AH register is decremented by value 1, the CF and AF are set to 1. Or else, the CF and AF are set to 0, the result required no correction. As a conclusion, the upper nibble of AL is set 00 and the lower nibble might be any number from the range 0 to 9.
The process is same to the AAA instruction. AH is modified as difference of the past contents (Typically zero) of AH and the borrow for adjustment.
ROR : Rotate Right without Carry: This instruction rotates the contents of destination operand to the bit-wise right either by one or by the count specified in register CL, exclud
AND: Logical AND: This instruction bit by bit ANDs the source operand that might be an immediate, or a memory location or register to the destination operand that might be a memor
There are 3 kinds of OCWs. The command word OCWI is utilized for masking the interrupt requests; when the mask bit corresponding to an interrupt request is value 1, then the requ
How to define procedures?
MLIL: Unsigned Multiplication Byte or Word: This instruction multiplies an unsigned byte or word by the contents of the AL. The unsigned byte or word can be in any one of the gene
Description: LC3 allows input from keyboard and output to display on the screen. This lab will exercise the input/output capability using LC-3 Assembly language. Procedure
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
Display control 8279 provides a 16 byte display memory and refresh logic. Every address in the display memory corresponds to a display unit with address zero represen
#questioexamplesn..
what will be the value of EAX after following instructions execute? mov bx, 0FFFFh and bx, 6Bh
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