Device Driver Needed - Compaq Portable 386, Dual Mode Plasma Display

[Eric Kennedy]

	We have recently purchased a Compaq Portable 386/20 computer
and installed SCO Xenix 2.3.  The computer has a dual mode display
which is capable of looking like either a monochrome display or a CGA
display.  In addition to the normal monochrome and CGA display modes
the display also supports a 640x400 graphics mode which is not a
standard CGA mode.  After some poking around I found the MODESWITCH
ioctl and hoped that setting the mode to 64 or 74 would do the trick.
It did not, I assume that the device driver includes code which only
allows certain modes to be activated.  I would guess that if we had
access to the source code for the CGA driver or a similar driver that
the changes necessary for access to this additional functionality
would be easily implemented.  Before we write a driver from scratch I
wanted to see if anyone has already written this device driver (or a
similar one).  If you have I would greatly appreciate hearing from
you.  Thanks!

					Sincerely,

					eric at scubed.arpa
					Eric Kennedy
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