Aas-arithmetic instruction-microprocessor, Assembly Language

Assignment Help:

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.

 


Related Discussions:- Aas-arithmetic instruction-microprocessor

Hand shaking-microprocessor, Hand shaking : Handshaking, or 2-way hand...

Hand shaking : Handshaking, or 2-way handshaking, is 1 type of strobe operation. It typically involves 2 handshaking lines: an output line to denote when the board is ready an

8086 program, program to arrange a given set of numbers in descending order...

program to arrange a given set of numbers in descending order

Arithmrtic operation exercise assempley HELP!, Open notepad and enter the c...

Open notepad and enter the code for a program that calculates the following arithmetic expression: x = a + b + c - d - e + f The operands a, b, c, d, e, f, and x should be declared

Movsw/movsb-string manipulation instruction-microprocessor, MOVSW/MOVSB : ...

MOVSW/MOVSB : Move String Word or String Byte: Imagine a string of bytes, stored in a set  of consecutive memory locations is to be moved to another set of  the destination locati

CONSTANTS, Ask question #MinimuWHAT ARE CONSTANTS AND WHAT DO THEY DO?m 100...

Ask question #MinimuWHAT ARE CONSTANTS AND WHAT DO THEY DO?m 100 words accepted#

Aas-arithmetic instruction-microprocessor, AAS: ASCII Adjust AL After Subt...

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

CONSTANTS, Ask question #MinimuWHAT ARE CONSTANTS AND WHAT DO THEY DO?m 100...

Ask question #MinimuWHAT ARE CONSTANTS AND WHAT DO THEY DO?m 100 words accepted#

Write an assembly language program, Your assignment for this project is to ...

Your assignment for this project is to write an assembly language program that checks if the user's input is a valid ISBN number. A sample run of your program might look like:

Xor-logical instruction-microprocessor, XOR: Logical Exclusive OR: The XOR...

XOR: Logical Exclusive OR: The XOR operation is again carried out in a similar way to the AND and OR operation. The constraint over operands are also similar. The XOR operation pr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd