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

Find the slip and the rotor frequency at full load, Q. A three-phase, 50-Hz...

Q. A three-phase, 50-Hz induction motor has a full load speed of 700 r/min and a no-load speed of 740 r/min. (a) How many poles does the machine have? (b) Find the slip and t

Discuss in detail about pulse broadening graded index wave, Discuss in deta...

Discuss in detail about pulse broadening in graded index waveguide ? Intermodal dispersion within multimode fibers is minimized along with the use of graded index fibers, ther

Pins and signals , Pins  and Signals As  discussed  earlier that  808...

Pins  and Signals As  discussed  earlier that  8085  microprocessor  chip has 40 pins shown  various  pins  and signals of 8085  microprocessor. All  these  signals can be   c

Cro, what is cro ?

what is cro ?

Scientists, biography of scientists in different branches

biography of scientists in different branches

Fields winding - motor control , Fields Winding It produces the workin...

Fields Winding It produces the working  flux, this is also  called exciting winding.

Explain the effect of a dielectric on behaviour of capacitor, Explain the e...

Explain the effect of a dielectric on the behaviour of a capacitor. If two parallel plates are separated by a distance 'd' (meters) in vacuum and are kept at a potential diffe

Illustrate working of direct-coupled amplifiers, Q. Illustrate working of D...

Q. Illustrate working of Direct-coupled Amplifiers? Direct-coupled Amplifiers : The following figure shows a direct-coupled amplifier consisting of two stages. A dc voltage i

For sign flag - conditional jumps , For  Sign  Flag JP ( jump  on ...

For  Sign  Flag JP ( jump  on plus ) Jump  on minus ) Instructions JP  transfer  the execution of the program to the specified  memory  address if  sign  flag is set (S=

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