The patch I created for palm/pose under FreeBSD 5.3-STABLE is here

The PR/Bug Report is here

I recently encountered a problem where FreeBSD would not recognize the second serial port on one of my computers. It had an internal modem connected to that port. dmesg was showing the following:
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled

Turned out that I had to enable the serial port in the BIOS.