What is necessary to get a floppy IRQ?

[pepito]

I don't know how to be able to trap the floppy IRQ-6. I need it to know when the FDD end a command.

pepito

[knicos]

Would help to know a little more.

You need to:
Program the PIC
Setup an IDT and install an interrupt routine
Also make sure the floppy controller is setup to produce an IRQ

All of above can be found in tutorials on internet. Reply if any further questions or details are needed.

[pepito]

I have done the 3 first steps already, but I don't know about the last step.

How can I setup the floppy controller to produce an IRQ?
Seting the bit 3 of the DOR register?

Thank you for your response

pepito

[knicos]

Yes, Set bit 3 of dor to enable dma and irq. That should work.

If it still dont work then check over the first 3 steps, but i cant see the problem.

[pepito]

Thank you very much!

By now I am using the busy bit of MSR and the 'sense interrupt status' command to determine if the command have finished.

pepito