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Strange Behavior on COM2

 
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Old 08-02-2006
Strange Behavior on COM2
Hi,

I have a problem with a new touch screen controller that I am trying to use on a SCO 3.0 system. THe touch screen controller only wants to talk at 9600baud. I have updated /etc/inittab per the manual and also edited /usr/lib/event/devices to use 9600 baud.

The only way I can get the touchscreen to communicate is to plug a serial mouse into the COM2 port, then replace it with the touchscreen cable. The problem is, every time I reboot, the touch screen quits working. It is almost as if the mouse is forcing the COM port to 9600 baud, but the touch screen controller itself won't do that.

How is SCO configuring the port differently based on whether a mouse is plugged in or the touch screen controller?

Any advice would be appreciated,

Thanks,
 
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LEARN ABOUT OSF1

do_config

do_config(9r)															     do_config(9r)

NAME

       do_config - EISA/ISA: Initializes the device to its assigned configuration

SYNOPSIS

       void do_config(
	       struct controller *ctlr_p );

ARGUMENTS

       Specifies  a  pointer to the controller structure associated with the controller to be configured. The do_config routine obtains the device
       to initialize through its controller's associated controller structure pointer.

DESCRIPTION

       The do_config routine initializes the specified controller based on its power-up resource assignments. If the device uses either an  inter-
       rupt  or  a  DMA  channel,  then do_config also performs any setup requirements. For example, for controllers that connect to the EISA bus,
       do_config initializes the controller according to the parameters specified in the EISA configuration file.

NOTES

       The do_config routine is a generic interface that maps to a bus-specific interface that actually initializes the specified  device.   Using
       this  routine to initialize a device makes the driver more portable across different bus architectures. Not all buses support the do_config
       routine.

RETURN VALUES

       None

SEE ALSO

       Routines: get_config(9r), get_info(9r)

       Data Structures: controller(9s)

																     do_config(9r)