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

String manipulation instruction-microprocessor, String Manipulation Instruc...

String Manipulation Instruction A series of words or data bytes are available in memory at consecutive locations, to be mention to individually or collectively, are known as by

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;

StrNCpyAsm, ;StrNCpyAsm - copy zero terminated string2 to zero terminated s...

;StrNCpyAsm - copy zero terminated string2 to zero terminated string1, ; but copy no more than count (parameter) characters ; or the length of string2, whi

Nible, calculate the number of one bits in bx and complement an equal numbe...

calculate the number of one bits in bx and complement an equal number of least significant bits in ax hint use the xor instruction

.., Sum of series of 10 numbers and store result in memory location total

Sum of series of 10 numbers and store result in memory location total

Program to add contents in memory-machine level programs, Example : Add th...

Example : Add the contents of the 2000H: 0500H memory location to contents of 3000H: 0600H and store the result in 5000H: 0700H. Solution : Unlike the past example progra

Or-logical instruction-microprocessor, OR: Logical OR: The OR instruction ...

OR: Logical OR: The OR instruction carries out the OR operation in the similar way as described in case of the AND operation. The restriction on source and destination operands ar

Addressing mode of 8086-microprocessor, Addressing mode of 8086 : Addre...

Addressing mode of 8086 : Addressing mode specify a way of locating operands or data. Depending on the data types used the memory  addressing  modes and in the instruction  ,

The real time system (rts)-microprocessor, The real time System (RTS) : ...

The real time System (RTS) : Calling the clock real-time is somewhat of a misnomer because it only shows the time setting it has been given. The RTC is the other half of chip

Operation system, Explain the basic method for implementing paging

Explain the basic method for implementing paging

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