> /dev/ttyS0, Line 0, UART: unknown, Port: 0xf3013020, IRQ: 15 > Baud_base: 0, close_delay: 50, divisor: 16 > closing_wait: 3000 > Flags: spd_normal > > What I find most interesting is that the UART is "unknown" and that > the Baud_base: is zero. Are these the correct values for a PowerMac? Yep. setserial doesn'n know about the SCC UART used in Macs, and the macserial ioctls don't return a value for baud_base, perhaps. Michael