Aad-arithmetic instruction-microprocessor, Assembly Language

Assignment Help:

AAD: ASCII Adjust for Division though the names of these 2 instructions (AAM and AAD) seem to be same, there is many difference between their functions. The AAD instruction converts 2 unpacked BCD digits in AL and AH to the corresponding binary number in AL. This adjustment might be made before dividing the 2 unpacked BCD digits in the AX by an unpacked BCD byte. SF, PF, ZF are modified whereas CF, AF, OF are not defined, after the execution of the instruction AAD. The instance describes the execution of the instruction. This instruction seems before DIV instruction unlike the AAM seems after MUL in the instruction sequence. Assume AX has 0508 unpacked BCD for 58 decimal, and DH consist 02H.

Example :

1629_AAD.jpg

The conclusion of the AAD execution will give the hexadecimal number 3A in the AL and 00 in the AH. Notice that 3A is the hexadecimal correspondent of 58 (decimal). Now, the instruction DIV DH can be executed. So rather than ASCII adjust for division, it is ASCII adjust before division operation.  All the ASCII adjust instructions are also known as unpacked BCD arithmetic instructions.  Now, we will consider the two instructions related to the packed BCD arithmetic.

 


Related Discussions:- Aad-arithmetic instruction-microprocessor

#title:Shifitng of memory, Ask 2. Exchange higher byte of AX and higher byt...

Ask 2. Exchange higher byte of AX and higher byte of BX registers by using memory location 0160 in between the transfer. Then stores AX and BX registers onto memory location 0174 o

Need algorithm for multiplication in assemby with out mul, need algorithm f...

need algorithm for multiplication in assembly with out mul function?

Assembling a program-microprocessor, Assembling a program Microsoft Ass...

Assembling a program Microsoft Assembler MASM is one of the simple to use and famous assemblers.  All the references and discussions in this section are belonging to the MASM.

Ocw-microprocessor, There are 3 kinds of OCWs. The command word OCWI is u...

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

Write an 8086 assembly program, Project Description: Write an 80x86 asse...

Project Description: Write an 80x86 assembly program that performs the following functions: Reads a set of integers from a file into an array. The data file name is to be

Code, How to print strings in Right Triangle form?

How to print strings in Right Triangle form?

Rcr-rcl-logic instruction-microprocessor, RCR: Rotate Right through Carry:...

RCR: Rotate Right through Carry:- This instruction rotates the contents  bit-wise of the destination operand right by the specified count through carry flag (CF). For each operati

Segmentation, segmentation and overlapping in assemble language

segmentation and overlapping in assemble language

Cmp-arithmetic instruction-microprocessor, CMP: Compare: - This instructio...

CMP: Compare: - This instruction compares the source operand, which can be a register or memory location an immediate data with a destination operand that might be a register or a

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