usr data/fax modem under 5.4

Alex Zbyslaw xfb52 at
Thu Jul 14 17:38:29 GMT 2005

dave wrote:

>I've enabled sio2 and set it's irq to 2, also 4, 5, and
>9, all of which give me the error:
>configured irq x not in bitmap of probed irq's 0
>under dmesg output i see the sio2 port, it's i/o address, and the fact that
>fbsd sees the modem's uart as a 16550a which again if i remember right tells
>me that i've got the sio2 port and i/o right, just the irq is wrong. Did i
>miss something?
I'm no expert on this, but no-one else seems to be either :-)

Are you sure it doesn't work despite the message?  With an 
on-motherboard sio port I get

sio1: configured irq 4 not in bitmap of probed irqs 0
sio1: port may not be enabled
sio1: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 on acpi0
sio1: type 16550A

and the port works just fine.  The "not in probed bitmaps" is some ACPI 
related cruft, IIUC.

I do, however, see the IRQ.  I do have"isa"

in device.hints, but I'm not really sure it was necessary.  Might well 
be for an actual ISA card, though.  Are you sure that none of the irq 
hints you tried showed you the IRQ in the COM port line?  I was 
distracted by the not in bitmap message for a while until I twigged that 
the thing *was* working.


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