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Re: IRQs mapping in PC platform



> > > For cyg_drv_interrupt_mask() is similarly.
>
> I would like to disagree with this last remark about  the mask function.
If
> you meant similarly as: "mask IRQ2 when maksing irq 8 or above" that
would,
> I think, mean that all IRQs above 8 are masked when we mask an IRQ above
8.
>

Yes, that's right.

> More generally I think that IRQ 2 should never be masked unless
> intentionnaly with the cyg_interrupt_mask. If it was the case, then mask
and
> unmask function should have worked correctly.
> And I think too that IRQ2 should be unmasked at PIC initialisation.
>
> Anyway it is still a good idea to unmask IRQ2 when unmasking an IRQ above
8.
>
 > Thanks
>
> --
> Fabrice Gautier
> fabrice_gautier@sdesigns.com
>

Thanks
--
Boris Guzhov,
St.Petersburg, Russia




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