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

Relative and absolute motion measuring device, a) With the help of a neat a...

a) With the help of a neat and clean sketch illustrate the difference between relative and absolute motion measuring device. b) Discuss electromechanical methods for calculating

Digital control system, a digital computer controlled rolling mill regulato...

a digital computer controlled rolling mill regulator system..

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Determine the angular frequency, Q. For given asymptotic Bode plots. (a)...

Q. For given asymptotic Bode plots. (a) Find ¯H 1 , ¯H 2 , and ¯H 3 at ω = 5 rad/s. (b) At what angular frequency ω is the magnitude of ¯H 4 (jω) one-half of the magnitude o

Explain commutator action in dc machine, Q. Explain Commutator Action in dc...

Q. Explain Commutator Action in dc machine? As a consequence of the arrangement of the commutator and brushes, the currents in all conductors under the north pole are in one di

Mutual inductance and coefficient of coupling, Mutual inductance and coeffi...

Mutual inductance and coefficient of coupling: The equivalent inductance of two series connected coil (with mutual inductance among them) is 0.8 or 0.2 Henry based on the rela

What is thermal runaway, Q. What is thermal runaway. The problem of sel...

Q. What is thermal runaway. The problem of self heating arises due to dissipation of power at the collector junction. The leakage current ICBO is extremely temperature dependen

Dc generator, Why armature core in a DC machine is constructed with laminat...

Why armature core in a DC machine is constructed with laminated steel instead of solid steel sheets

Full wave bridge rectifier circuit , Construct a full wave bridge rectifier...

Construct a full wave bridge rectifier circuit and connect it to the transformer output. What is the Output Voltage and Frequency?

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