Hi Nick,

Ensure that all ports are in RS-232 mode and you run driver with correct
port address and IRQ for each serial port. Try to run separate copies of
Dev32.ser for each port.
Check "sin ir" output. The Dev32.ser driver does not support interrupt
sharing with other drivers.

I can also suppose that driver spends too much time by polling status
registers ( e.g. LSR) and you faced a hardware issue.
In this case the best way is to build you own Dev32.ser from the source
and add some debug output.
The Dev32.ser driver source code is available in global network. For
example here:
ftp://ftp.quantum.com.pl/pub/free/qnx4/os/samples/Dev_drivers/
This source code is quite old but I think it can be useful.

Regards,
Pavel


> I am having a problem with a ARBOR EPC-6200. If Dev32.ser is running and the com port is in use, the system becomes 
unresponsive after a period of time. (i.e.takes several minutes to complete another login) If I slay Dev32.ser, 
operation returns to normal.
> The system uses an Intel ATOM N270 cpu and 945GSE + ICH7M chipset. Com1/2 uses a Winbond W83627 and for Com3/4 a 
Fintek F81216DG. Proc32 is 4.25Q and Dev32.ser is 4.25A.
> 'show_pci' doesn't find either device.
> Nick Fagan
>
>
>
>
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