Hi,

David P. Reed <dpreed <at> reed.com> writes:

quoted text
> And actually, if I had looked at the /sys/bus/pnp definitions, rather 
> than /proc/ioports, I would have noticed that port 80 was part of a 
> PNP0C02 resource set.   That means exactly one thing:  ACPI says that 
> port 80 is NOT free to be used, for delays or anything else.

I have some computers where port 0x80 is claimed by 8237A DMA controller [1]
But in this case it seems a lasy acpi programmer that doesn't want to convert
the hole in  0x80-0x8f range...


PS : I post from gmane web interface, so I can't keep CC.

[1]
This happen with a old 7 years old siemens PIII and a new hp core2duo.
state = active
io 0x0-0xf
io 0x80-0x8f
io 0xc0-0xdf
dma 4 

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