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

Digital electronic, What are the advantages of wired-AND connection of digi...

What are the advantages of wired-AND connection of digital IC

Diode current -zener region, Diode current: Zener region: when the r...

Diode current: Zener region: when the reverse biased voltage is increase to a very high value then a point is reached where will is suddenly going a very high value. Th

Explain stator of a synchronous machine, Explain Stator of a Synchronous Ma...

Explain Stator of a Synchronous Machine? The stator of a synchronous machine is made of thin laminations of highly permeable (silicon) steel in order to reduce the core losses.

Show step-motor control system, Q. Show Step-motor control system? Figu...

Q. Show Step-motor control system? Figure illustrates a system in which the prime mover used in the disk-drive system is a step motor driven by pulse commands. In response to e

Explain the working of electronic multimeter, Q.  Give suitable block diag...

Q.  Give suitable block diagram to explain the working of electronic multimeter. Sol. An electronic multimeter is a laboratory instrument which is capable of measurement of

Show maximum differential input voltage of amplifier, Q. Show Maximum Diffe...

Q. Show Maximum Differential Input Voltage of amplifier? This is the maximum value of differential input voltage v p - v n that can be applied without damaging the op amp.

What do you know about input impedance, Q. What do you know about Input Imp...

Q. What do you know about Input Impedance? Input Impedance  : Amplifiers will be quoted as having a specific input impedance. The sort of load it will place on preceding equipm

By the nodal analysis find the current delivered, By means of nodal analysi...

By means of nodal analysis, find the current delivered by the 10-V source and the voltage across the 10- resistance in the circuit shown in figure.

Types of field-effect transistors, Types of Field-Effect Transistors T...

Types of Field-Effect Transistors The channel of a FET (field-effect transistor) is doped to produce either an N-type semiconductor or a P-type semiconductor. The drain and so

Obtain rated fundamental voltage across the motor, A 440-V, 60-Hz, six-pole...

A 440-V, 60-Hz, six-pole, wye-connected, squirrel-cage induction motor with a full-load speed of 1170 r/min has the following parameters per phase referred to the stator: R 1 = 0.

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