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Is my flowchart for programmed io and interrput drive io correct?

shivajikobardan

Oct 21, 2021
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Oct 21, 2021
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Source of my knowledge-: https://electronics.stackexchange.com/questions/204337/programmed-io-vs-interrupt-for-devices

https://slideplayer.com/slide/265620/



And my teacher.

So here is what I understand about



1) Programmed IO-:

Here CPU periodically executes instruction which reads READY pin



2) Interrupt driven IO-:

Here CPU checks interrupt at the end of each instruction cycle whereas IO device sends interrupt.

The original flowchart for these are as follows-:

https://imgur.com/a/fIwwxyf

Here is what I have made-:



https://imgur.com/a/0woBT73

First one is programmed io and second one is interrupt driven io. In interrupt driven io I mistakenly drew arrow from "CPU issues read command to IO module" to "hardware/CPU checks for interrupt at the end of each instruction cycle".


I just want to know if my understanding of flowchart is correct or not?
 

shivajikobardan

Oct 21, 2021
39
Joined
Oct 21, 2021
Messages
39
I didn't understand what you mean? I can't post questions in all about circuits and electronicspoint both at the same time? You mean?
 

bertus

Moderator
Nov 8, 2019
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Nov 8, 2019
Messages
3,304
Hello,

You can not link images from AllAboutCircuits.
You will need to upload the images on this site.
Keep the size of the images around 300 kB.

I also posted the link, so others can see what already has been given.

Bertus
 
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