Compare with register, Electrical Engineering

Assignment Help:

Compare with Register

The contents  of the register  are compared with  the contents  of the accumulator  here  register  may be  any one  of the  A, B, C, D E, H, or L  registers. The instruction format is

CMPR                          (A-R)

Actually the comparison is done  by subtracting  the contents  of the register from the  contents  of the  accumulator. The contents of the  register  and  the accumulator do not  change the  flags  are modified similar  to subtraction.

Flags : All flags  are modified  as they  would  change  in subtract  operation. But the  contents of both the  operand do  not change.

Although  all flags  are modified  but the  conclusion can be made only by CY and Z flag as shown  below

If A> R : CY  and Z flags  are reset.

IF A= R: Z Flag is set and  CY flag is reset.

IF A < R : CY  is set  and Z  flag s reset.

 


Related Discussions:- Compare with register

What does eu do?, Basically,8086 is separated into two part. 1. BIU. 2. EU ...

Basically,8086 is separated into two part. 1. BIU. 2. EU Execution Unit(EU)Fetch the instruction from Queue(memory(6 byte) in BIU.) and implement it.

Development of PLC- controlled crystallization model, 1.Describe the techno...

1.Describe the technological process of crystallization. 2. Compose the requirements to developed crystallization model.stion..

Emitter follwer, Ask questertion #Minimum 100 words accepted#

Ask questertion #Minimum 100 words accepted#

Mode 1 - buck converter , Mode 1 ( 0 By  applying a positive  output ...

Mode 1 ( 0 By  applying a positive  output  pulse  of the pulse  width modulator to  the  transistor Q 1 it gets turned on.  An input  current  in flows  through V in   Q 1

Decimal to binary coded decimal conversions, Decimal to Binary Coded Decima...

Decimal to Binary Coded Decimal Conversions Step1. Separate the digits in the decimal number Step2. Express each of the digits in their binary equivalent Step3. Combine all o

Calculate the amplitude and the frequency of the sine wave, (a) The key el...

(a) The key elements of a protocol are the syntax, semantics and timing. Give a brief explanation of each of these key elements. (b) A file contains 4 million bytes. Compare

Determine what is the minimum required sampling rate, 1. An analog informat...

1. An analog information signal, whose maximum frequency is 6000Hz, is to be transmitted using a PCM system. The quantization error must not exceed the 1 % of the peak-to- peak an

Material science, advantage and disadvantage of alloying steel with silicon...

advantage and disadvantage of alloying steel with silicon

Colpitts oscillator circuit design, i would like to construct a colpitts os...

i would like to construct a colpitts oscillator using a series lc tank circuit as a feedback. the circuit will have a frequency of 150 Khz and it will drop when varying the value o

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