GEM driver sources
==================

  This file contains source code for the three ViewMAX/2 video drivers - part 
original (based on GEM/3), part disassembled. The drivers are:

   UDCAT9: CGA 640x200 mono / AT&T 640x400 mono
   UDHRC9: Hercules 720x348 mono
   UDUNI9: EGA/VGA mono and colour

  They haven't been tested, but the assembled results are as nearly identical 
to the ViewMAX/2 drivers as I can get them.
 
  To build these drivers from source, you will need GNU Make, RASM-86 version 
1.4a and LINK-86 version 2.02. 
