Dear All, I'm trying to enable a four-port serial card (you'ld be surprised how many pieces of equipment still have RS232 interfaces). I'm using Fedora 7 on a quad-core Intel Q6600 machine with 4GB of memory. #/sbin/lspci -vvvx shows the following: 07:01.0 Serial controller: NetMos Technology PCI 9845 Multi-I/O Controller (rev 01) (prog-if 02 [16550]) Subsystem: LSI Logic / Symbios Logic 0P4S (4 port 16550A serial card) Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin A routed to IRQ 21 Region 0: I/O ports at 1030 [size=8] Region 1: I/O ports at 1028 [size=8] Region 2: I/O ports at 1020 [size=8] Region 3: I/O ports at 1018 [size=8] Region 4: I/O ports at 1010 [size=8] Region 5: I/O ports at 1000 [size=16] 00: 10 97 45 98 03 00 80 02 01 02 00 07 10 20 00 00 10: 31 10 00 00 29 10 00 00 21 10 00 00 19 10 00 00 20: 11 10 00 00 01 10 00 00 00 00 00 00 00 10 04 00 30: 00 00 00 00 00 00 00 00 00 00 00 00 0a 01 00 00 when I do a setserial I get this: # /bin/setserial -avg /dev/ttyS* /dev/ttyS0, Line 0, UART: 16550A, Port: 0x1030, IRQ: 21 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal skip_test /dev/ttyS1, Line 1, UART: undefined, Port: 0x02f8, IRQ: 3 Baud_base: 921600, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal skip_test auto_irq /dev/ttyS2, Line 2, UART: 16550A, Port: 0x1028, IRQ: 21 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal skip_test /dev/ttyS3, Line 3, UART: 16550A, Port: 0x1020, IRQ: 21 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal skip_test Clearly /dev/ttyS1 is not OK, but I've no idea how to set it up so it is OK - I'd be grateful for any help. Thanks, David Scriven Connect with friends from any web browser - no download required. Try the new Yahoo! Canada Messenger for the Web BETA at http://ca.messenger.yahoo.com/webmessengerpromo.php