Re: 8255.c and other modes

On Tuesday 20 March 2007 11:01 am, Ford, Pat wrote:
>  I'm writing a bus emulator to set on a unibus like data bus. I really
> need interrupts to do this, and management has decided that we shall use
> NI PCI-DIO-96 as the interface card.
>
>  Is there any reason that the 8255 driver doesn't do more then mode 0?
> In the ni_pcidio source file it sure looks like interrupts are
> supported, is that only from the timers on the card?

I haven't looked into it in detail, but are you sure the pci-dio-96 
supports anything other than mode 0?  Some of these boards just emulate 
8255 mode 0 and don't actually support the other modes a real 8255 
supports.

-- 
Frank