This is one of those 'I had it working this weekend, but broke it'
OK, For some experiments I need 3 serial ports.
The motherboard has two.
I popped out the soundblaster on IRQ5, and put in a serial board
with only one port enabled, that on IRQ5.
in rc.serial I put
/bin/setserial /dev/ttyS2 irq 5
So far so good, I can open the port, but any attempt to
do a tcgetattr or tcsetattr to set the serial port parameters
PLEASE, anyone who has made this work, WHAT AM I MISSING????
[ It really DID work this last weekend, and I did ZIP then,
no setserial, no nothing, but I was running a kernel where
I had modified a couple of #defines in serial.c to try to
get the driver to handle more than one port on one IRQ ].