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

Microprocessor, from pin description it seems that 8086 has 16 address/data...

from pin description it seems that 8086 has 16 address/data lines i.e.AD0_AD15.The physical address is however is larger than 2^16.How this condition can be handled

Format of control register-microprocessor, Format of Control Register T...

Format of Control Register The format for the control register is given in Figure. Bit 0 of this register might be one before data may be output  and  bit  two  might be  one

Prepare the assembly code sequence, Problem (a) Prepare the assembly c...

Problem (a) Prepare the assembly code sequence for each of the four styles (accumulator, memory-memory, stack, load/store) of machine for the code fragment: A = B + C;

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

Div-idiv-arithmetic instruction-microprocessor, DIV: Unsigned Division:- T...

DIV: Unsigned Division:- This instruction performs unsigned division operation. It divides an unsigned word or double word by a 16-bit or 8-bit operand. The dividend might be in t

Define word (dw)- assemblers directive-microprocessor, DW : Define Word:- ...

DW : Define Word:- The DW directive serves the same purposes as the DB directive, but now it makes the assembler  which reserves thenumber ofmemory words (16-bit) instead of by

8086, Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to inv...

Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of ax register

8086 microprocessors, program to find negative and positive integers from g...

program to find negative and positive integers from given signed numbers with output and explanation of every instructions.

Logical instruction-microprocessor, Logical Instruction : This type of...

Logical Instruction : This type of instructions is utilized for carrying out the bit by bit shift, basic logical operations or rotate. All of the condition code flags are affe

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