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

Program, Write a program to separate out positive and negative numbers from...

Write a program to separate out positive and negative numbers from a given series of 16-bit hexadecimal numbers.

And-logical instruction-microprocessor, AND: Logical AND: This instruction...

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

Lab Assignment, 1) Write an 80x86 assembly language program in EXE file for...

1) Write an 80x86 assembly language program in EXE file format to do the following tasks: a) Open and read the contents of a file into memory (use at least 1 kB). b) Sort the li

Program which allows the user to select from menu, Write a 32-bit program w...

Write a 32-bit program which when run, allows the user to select from a menu: (1)    Enter a Binary Number (2)    Enter a Decimal Number (3)    Enter a Hexadecimal Number

Counting Array Values(Programming exercises), Write an application that doe...

Write an application that does the following:(1) fill an array with 50 random integers; (2) loop through the array, displaying each value, and count the number of negative values;

Segmentation, segmentation and overlapping in assemble language

segmentation and overlapping in assemble language

Imul-arithmetic instruction-microprocessor, IMUL: Signed Multiplication: T...

IMUL: Signed Multiplication: This instruction multiplies a signed byte by a signed bit in source operand e in the register AL or signed word in source operand by signed word in th

Flowchart, ALP to preform of two 16-bit numbers in register addressing mode...

ALP to preform of two 16-bit numbers in register addressing mode

8086 assembly language, write and run a programme using 8086 assembly langu...

write and run a programme using 8086 assembly language that interchange the lower four bits of AL registered with upper four bits.

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