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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 NETBSD

jmide

JMIDE(4)						   BSD Kernel Interfaces Manual 						  JMIDE(4)

NAME

     jmide -- JMicron Technology JMB36x PCIe to SATA II/PATA controller driver

SYNOPSIS

     jmide* at pci? dev ? function ? flags 0x0000
     ahcisata* at jmide?

DESCRIPTION

     The jmide driver supports the JMicron Technology JMB36x IDE controllers.

     These PCI-e controllers exist in different flavors (1 or 2 PATA Ultra/133 ports and/or 1 or 2 SATA-II ports), and are highly flexible.  The
     SATA ports can be attached to the integrated AHCI controller or attached to the PCI IDE channels in PATA emulation, in either single-drive
     emulation on each PCI IDE channels, or in master/slave emulation on one of the PCI IDE channels.

     When enabled, the AHCI controller can either be on the PCI function 0 or function 2.  The PCI IDE controller can also be on either PCI func-
     tion, and can share the PCI function with AHCI.  The jmide driver supports both the AHCI controller and PCI IDE controller in various config-
     urations.

SEE ALSO

     ahcisata(4), ata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)

AUTHORS

     The jmide driver was written by Manuel Bouyer.

BSD
								   July 2, 2007 							       BSD