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

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

how does an RC 3 phase shift oscillator operates?

Complete instruction set of 8085 microprocessor , Complete Instruction Set ...

Complete Instruction Set of 8085 Microprocessor There are  total 256 instructions in  8085 microprocessor. These instructions are classified  into  seven categories  according

Governer, governer characteristics

governer characteristics

Semiconductors, Charge density In a semiconductor

Charge density In a semiconductor

Dc motor control, how thyristor work in speed control??

how thyristor work in speed control??

Digital communication systems, Q. Digital communication systems? Today ...

Q. Digital communication systems? Today digital communication systems are in common use, carrying the bulk of our daily information transmission through a variety of communicat

Series-carry synchronous counter with t flip-flops, Q. Consider a series-ca...

Q. Consider a series-carry synchronous counter with T flip-flops shown in Figure in which the AND gates carry forward the transitions of the flip-flops, thereby improving the speed

How many wavelengths long is the line, Q. A transmission line with a dielec...

Q. A transmission line with a dielectric (εr = 3.5) is 100 m long. At a frequency of 10 GHz, how many wavelengths long is the line?

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