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serial port mystery



Sometime ago I upgraded to FC3 from RedHat 9 to, among other reasons,
get my VScom PCI 2 port serial card working.

(RedHat 9 required a kernel re-compile)

Anyway FC3 made it work. The two ports have been working for sometime on
/dev/ttyS4 & 5. Now, inexplicably (after a reboot test) the 2 ports
insist on using /dev/ttyS14 & 15.

I removed my rc.serial ...

<reference>
[root billinux ~]# cat /tmp/rc.serial
setserial /dev/ttyS4 port 0xeca8 autoconfig
setserial /dev/ttyS5 port 0xec98 autoconfig
</reference>

... and still they come up as ttyS14 & 15.

Somehow, the kernel must be doing this. But how? ACPI?  Where is the
config?
How might this have changed? yum?
Can I still use a rc.serial?
How can I get the ports permissions set to 666?

<reference from: dmesg>
ACPI: PCI interrupt 0000:00:04.0[A] -> GSI 25 (level, low) -> IRQ 177
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS14 at I/O 0xeca8 (irq = 177) is a 16550A
ttyS15 at I/O 0xec98 (irq = 177) is a 16550A
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
</reference>






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