OSDev.org

Hi all.
well
this little thing (PIC) has always given me trouble, and still does.
all irq works before i remap, but as soon as i have remaped, and undmasked all int ( enabled), nothing get though.
Just to be sure, i have remapped all IRQ's to some test handlers, witch never gets called..
so why wont the PIC not allow any commands ??


the code is 99% the same as the tutorial (i know, but you cant realy change that), brokenthorn (Neon)

a hint or any clue and i would be so GLad ( last time i tried this pice, it did the same)

kmt dk

edit:
i works if i call the IRQs directly,

i have testet it on RHW, and bochs, and both does not like it ..

Oh god, danish comments.....

I think I traced your bug to the enabling of interrupts - you read the second port and assume its the interrupt mask, however its giving you the interrupt request mask, which is a whole different story.

You should keep a local copy of the interrupt mask, update that, then send it rather than attempting to read its previous value from the PIC

I think i know the error now ( thanks for the replay ( you could also have said OCW 3 insted ))

so that is what the tutorial misses( brokenthorn (neon's)) [how could i have overlooked the line "after initalizing, the IRR is set"]

KMT dk