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

How monitoring and control has be done, How control and monitoring has be d...

How control and monitoring has be done - Sensors gather information from application being monitored or controlled. - The data being gathered is frequently analogue in natur

Explain about address structure, Q. Explain about Address Structure? A...

Q. Explain about Address Structure? Address Structure: ISDN address structure is illustrated in figure. ISDN number part has a maximum of 15 digits and ISDN sub address part

Find the temperature coefficient of the resistance material, The field resi...

The field resistance of a dc machine is 50 ohm at 20 o C. The resistance increases to 55 ohm at 50 o C. Find the temperature coefficient of the resistance material. Ans: Sol

Determine the full load voltage regulation, A 25KVA, 3 phase, wye-connected...

A 25KVA, 3 phase, wye-connected, 400v synchronous generator has a synchronous impedance of 0.05 +j1.6 ohms per phase. Determine the full load voltage regulation at (a) 0.8 power

What is meant by regulation, Q. What is meant by regulation? The output...

Q. What is meant by regulation? The output of most power supplies should be a constant voltage. Unfortunately, this is difficult to achieve. There are two factors that can caus

Determine harmonic factor hf of the input current, Q. Consider a full-wave ...

Q. Consider a full-wave single-phase bridge recti?er circuit with dc motor load, as shown in Figure (a). Let the transformer turns ratio be unity. Let the load be such that the

Determine vout and the power supplied, Q. An operational amplifier stage is...

Q. An operational amplifier stage is typically represented by the circuit of Figure. For the values given, determine V out and the power supplied by the 2.5-V source.

Clippers, what is shunt clipper?

what is shunt clipper?

Define voltage source multiplying dac, Define Voltage Source Multiplying DA...

Define Voltage Source Multiplying DAC? Voltage source multiplying DACs use a reference voltage which is switched in or out by the digital data.  The converter is so-named becau

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