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

Bjt, how do I find the ic and ve

how do I find the ic and ve

D flip flop - introduction to microprocessors, D Flip Flop As we have ...

D Flip Flop As we have seen  in the SR flip flop  when the inputs  S= R  are applied the forbidden or indeterminate state occurs.  This state can destabilize the SR file flop.

What is the per-unit slip at full load, Q. A three-phase, 60-Hz induction m...

Q. A three-phase, 60-Hz induction motor runs at almost 1800 r/min at no load, and at 1710 r/min at full load. (a) How many poles does the motor have? (b) What is the per-unit

Current transformers., CT 10VA, 50A/5A, 6ohz, 2.4KV required nominal primar...

CT 10VA, 50A/5A, 6ohz, 2.4KV required nominal primary voltage?

Find the expressions for the inductor current, Consider the RL circuit of F...

Consider the RL circuit of Figure with R = 2, L = 5H, and v(t) = V = 20 V (a dc voltage source). Find the expressions for the inductor current i L (t) and the inductor voltage v L

Evaluate the efficiency of embedded systems, Questions: a) One common ...

Questions: a) One common characteristic of Embedded Systems is that they need to be dependable. Name and describe any three aspects which encompass dependability. b) Name

Explain the different types of multivibrators, Explain the different types ...

Explain the different types of multivibrators ? Multivibrator is basically  a two-stage amplifier with output of one supplied back to the input of the other . Multivibr

Which stack is used in 8086, FIFO (First in First Out) stack is used in 808...

FIFO (First in First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.

Use of a k map simplify the following boolean expressions, Q. With the use ...

Q. With the use of a K map, simplify the following Boolean expressions and draw the logic diagram.

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