General data registers-microprocessor, Assembly Language

Assignment Help:

General Data Registers

Given figure indicate the register organization of 8086. The registers DX, CX, BX and AX are the general purpose 16-bit registers. AX is behaved as 16-bit accumulator, with the lower 8-bits of AX designated as AL and higher 8-bits as AH. AL may be used as an 8-bit accumulator for 8-bit operations.  This is the most essential general purpose register having multiple functions.

721_register org of 8086.jpg

Figure: Register organisation of 8086

 

Generally the letters L and H denote the lower and higher bytes of a specific register. For example, CH means the higher 8-bits of the CX register and CL means the lower 8-bits of the CX register. The letter X is referring to specify the all the 16-bit register. The register CX is also refers for default counter in case of loop instructions and string. The register BX is refersfor offset storage for forming physical addresses in case of definite addressing modes. DX register is one of general-purpose register which can be utilized as an implicit destination or operandin case of a few instructions.

 


Related Discussions:- General data registers-microprocessor

Conditional branch instruction-microprocessor, Conditional branch Instructi...

Conditional branch Instruction When these type of instructions are executed, they transfer control of execution to the address mention relatively in the instruction, provided t

Das-arithmetic instruction-microprocessor, DAS: Decimal Adjust after Subtr...

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

PIC MCU, CAN U GIVE BRIEF THEORY

CAN U GIVE BRIEF THEORY

Whle loop, program to accept 23 students name using while loop let your var...

program to accept 23 students name using while loop let your variable control the value negative 4

Dec-micro processor, DEC : A powerful new Alpha 64 bit RISC computer ch...

DEC : A powerful new Alpha 64 bit RISC computer chip was introduced in the year 1977, as new VAX (Virtual Address Extension) Computer. The VAX was 32 bit computer line based on

8086 assembly language program, move a byte string ,16 bytes long from the ...

move a byte string ,16 bytes long from the offset 0200H to 0300H in the segment 7000H

Lods-stos-string manipulating instruction-microprocessor, LODS : Load Stri...

LODS : Load String Byte or String Word:- The LODS instruction loads AL/AX register by the content of a string pointed to by DS:SI register pair. The SI is automatically modifie

Org-proc-assemblers directive-microprocessor, ORG : Origin:- The ORG di...

ORG : Origin:- The ORG directive directs the assembler to begin the memory allotment for the specific segment, code or block from the declared  address in the ORG  statement. W

Solotuon, using 8086 assembly language that interchange upper four bits to ...

using 8086 assembly language that interchange upper four bits to lower four bits. assume that data store in byte memory and it written back to same location. and assume the data as

Write a mips assembly language program, Write a MIPS/SPIM assembly language...

Write a MIPS/SPIM assembly language program that prints the smallest and largest values found in a non-empty table of N word-sized integers. The address of the first entry in your

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