Is this correct? I can't find any specs on the IBM website which specify what UART the serial port uses/emulates, but FreeBSD thinks its an 8250: sio0: configured irq 4 not in bitmap of probed irqs 0 sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 8250