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

Determine the bits required for a d/a converter, Q. Determine the bits requ...

Q. Determine the bits required for a D/A converter to detect 1-V change when V ref = 15 V.

Explain assume assembler directive, What do you understand by ASSUME as...

What do you understand by ASSUME assembler directive? ASSUME: This directive will be utilized to map the segment register names along with memory addresses.  The Synta

Why do we cascade amplifiers, Q. Why do we cascade amplifiers? Why is RC co...

Q. Why do we cascade amplifiers? Why is RC coupling the most widely used coupling between 2 stages of a cascading amplifier? The voltage or power gain or frequency response obt

#title.oscillators., how does an RC 3 phase shift oscillator operates?

how does an RC 3 phase shift oscillator operates?

Avalanche breakdown region, Avalanche breakdown region: Even though th...

Avalanche breakdown region: Even though these regions are well described for sufficiently large applied voltage, they overlap somewhat for small (less than a few hundred milli

Drawing, #question what are the types of lines used there and their applica...

#question what are the types of lines used there and their application ..

Ht metering, HT Metering The following type of meters is generally use...

HT Metering The following type of meters is generally used for HT consumers: Trivector Meter, Bivector Meter, and Summation Meters. Trivector Meter

The filter capacitor , It is needed to use a half-wave rectifier for a dc p...

It is needed to use a half-wave rectifier for a dc power supply that gives an average dc output voltage of 15 V and a maximum ±1V ripple is permitted. The rectifier feeds a load of

MUX, Is it used to replace the basic gates ?

Is it used to replace the basic gates ?

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