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

Electrical machine, Design a suitable double –layer lap winding for a 6-pol...

Design a suitable double –layer lap winding for a 6-pole dc armature with 18 slots and two coil sides per slot. Give values of front-pitch, brack–pitch and commutator pitch. Draw t

Determine the sampling rate for an analog signal, Using Nyquist t...

Using Nyquist theorem, determine the sampling rate for an analog signal with frequencies from 3000Hz to 86000Hz and for a signal with ahorizontal line in th

Three phase power measurement, what is the relationship between the inducta...

what is the relationship between the inductance, capacitance and resistance in the 2-wattmeter experiment?

Circuit theory ., it''s 3 assignments and each assignment have 7 questions ...

it''s 3 assignments and each assignment have 7 questions so each assignment have 1 hour when I open it I have only 1 hour to finish it I can show him or her the practice question t

What are advantages of segmentation, What are advantages of segmentation...

What are advantages of segmentation ? However because the segment register is 16 bit broad and the memory requires 20 bits for an address the 8086 appends 4 bits segment reg

What is dtmf dialling, Q. What is DTMF dialling? DTMF dialling 1. ...

Q. What is DTMF dialling? DTMF dialling 1.  Uses push buttons 2.  Uses 8 different frequencies in pairs. 3.  16 different characters can be represented. 4.  The f

Hall effect, Describe hall effect?also describe it''s mathematical analysis...

Describe hall effect?also describe it''s mathematical analysis and it''s properties

Compute the worst voltage regulation, Q. The following data were obtained o...

Q. The following data were obtained on a 25- kVA, 2400:240-V, 60-Hz, single-phase distribution transformer: • Open-circuit test with meters on LV side: 240 V, 3.2 A, 165 W •

Motor: power production, The mechanical power produced at the armature of a...

The mechanical power produced at the armature of a motor is: P = T a . (power is in watts if torque is N.m and    in rad/sec). Some of this will be lost due to friction and

Analog circuit, What is the disadvantages of diodes as a series element in ...

What is the disadvantages of diodes as a series element in a clipper?

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