hello,
I make my own PC104 board, with 2 uart 16c550 (for GPS and a Aerocomm)
and an AD8504
when I boot the system it recognize only one serial port like that:
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ enabled
ttyS03 at 0x89c002e8 (irq = 33) is a 16550A
partially good, because my board use the IRQ 7 (by the way why he IRQ
is write 33 for 6 and 40 for 7, where can I find the right match)
If issue the command:
setserial /dev/tts/3 irq 40
everything is ok I can use my port.
So my question is why it use irq 33 instead of 40 and how can I change
that ? (except on my board)
The second uart use the port com5 and IRQ9, but doesn't show up at
all, have no clue why, is the IRQ 9 a bad choice ?
thanks for your help
regards,
arno
PS: design of the board is free if you want to check, it's done on eagle
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