On Mar 9, 2007, at 15:53, Matt Hyclak wrote:
Have you looked at http://wiki.centos.org/HowTos/Custom_Kernel?
OK, I've rebuilt the kernel according to the instructions on this
page (I ran into some issues; see earlier post in another thread). I
only changed two settings in the config file:
CONFIG_SERIAL_8250_MANY_PORTS=y [originally disabled]
CONFIG_SERIAL_8250_NR_UARTS=20 [originally 4]
The good news is that the system now sees all eight serial ports
(nine counting the one on the MB itself). But the naming convention
for the serial ports leaves something to be desired:
# dmesg | fgrep tty
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS14 at I/O 0x5020 (irq = 177) is a 16C950/954
ttyS15 at I/O 0x5028 (irq = 177) is a 16C950/954
ttyS44 at I/O 0x5030 (irq = 177) is a 16C950/954
ttyS45 at I/O 0x5038 (irq = 177) is a 16C950/954
ttyS46 at I/O 0x5060 (irq = 193) is a 16450
ttyS47 at I/O 0x5068 (irq = 193) is a 16450
ttyS48 at I/O 0x5070 (irq = 193) is a 16450
ttyS49 at I/O 0x5078 (irq = 193) is a 16450
ttyS50 at I/O 0x50a0 (irq = 217) is a 16C950/954
ttyS51 at I/O 0x50a8 (irq = 217) is a 16C950/954
ttyS52 at I/O 0x50b0 (irq = 217) is a 16C950/954
ttyS53 at I/O 0x50b8 (irq = 217) is a 16C950/954
ttyS54 at I/O 0x50e0 (irq = 225) is a 16450
ttyS55 at I/O 0x50e8 (irq = 225) is a 16450
ttyS56 at I/O 0x50f0 (irq = 225) is a 16450
ttyS57 at I/O 0x50f8 (irq = 225) is a 16450
I haven't tested the ports yet, but it looks like they are now
ttyS14, 15, 44, 45, 50, 51, 52, and 53.
Alfred
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