Featured

    Featured Posts

Explain NOP and HLT instructions in 8086 microprocessor in detail.


Explain NOP and HLT instructions in 8086 microprocessor in detail.

NOP instruction :


Mnemonic
NOP : No operation
It does not affect any flag
Algorithm
DO nothing

Addressing Mode
Implied addressing mode


Operation : The execution of this instruction causes the CPU to do nothing.

  1. This instruction causes the CPU to do nothing. This instruction uses three clock cycles and increments the instruction pointer to point to the next instruction.
  2. It can be used to increase the delay of a delay loop.
HLT (Halt until interrupt or reset) Instruction :-

Mnemonic  Halt     Flags : No flags are affected.

Operation :
  1. The HLT instruction will cause the 8086 enters to stop fetching and executing instructions. The 8086 enters into a half state. To come out of the halt state, there are 3 ways given below. (a) Interrupt signal on INTR pin, (b) Interrupt signal on NMI pin, (c) Reset signal on rest pin.
  2. It may be used as an alternative to an endless software loop in situation where a program must wait for an interrupt.

11 comments

This comment has been removed by the author.



This is most informative and also this post most user friendly and super navigation to all posts... Thank you so much for giving this information to me.. 

angularjs Training in online

angularjs Training in bangalore

angularjs Training in bangalore

angularjs Training in btm

Reply

I read this post two times, I like it so much, please try to keep posting & Let me introduce other material that may be good for our community.
python training in OMR
python training in tambaram
python training in annanagar

Reply

Thanks for splitting your comprehension with us. It’s really useful to me & I hope it helps the people who in need of this vital information. 
Devops Training in pune

Reply

Really you have done great job,There are may person searching about that now they will find enough resources by your post
selenium training in electronic city | selenium training in electronic city

Reply

Wow it is really wonderful and awesome thus it is very much useful for me to understand many concepts and helped me a lot. it is really explainable very well and i got more information from your blog.

rpa training in velachery| rpa training in tambaram |rpa training in sholinganallur | rpa training in annanagar| rpa training in kalyannagar

Reply

Post a Comment

www.CodeNirvana.in

www.posthatke.com. Powered by Blogger.

Google+ Followers

Copyright © www.posthatke.com | Blogger Templates | Designed By posthatke.com