On your SCO UnixWare 2.X system, view or print the file /usr/X/defaults/Xwinconfig. This file contains keyboard, video adapter, and monitor definitions. The important lines are shown here:
chipset = GD54xx # video chipset
model = "GD54xx" # the core drawing lib for this class
vendor_lib = gd54xx_256.so.2 # chip specific drawing lib
virtual_size = 1024x768 # actual Frame Buffer size
vendor = "Cirrus Logic - Generic" # vendor name
From this information, you can determine that the configured video
adapter is a Cirrus Logic GD54xx series model configured for
1024x768 mode.
Record this information, then (if auto-detection or auto-configuration fails) use it to configure your adapter on UnixWare 7 using the Video Configuration Manager.