GEM 1.x video drivers
=====================

  This zipfile contains reconstructed source code for the following GEM/1
video drivers (series 5). The drivers fall into three categories:

1. Drivers which I can compare to the original GEM/1 drivers, to be sure 
  they exactly match.

2. Drivers for which I haven't got the original, but which I can test. These
  may not be the same as the originals (or, like the VGA driver, may be 
  backports of drivers for which an original never existed), but it's a 
  good bet that they work.

3. Drivers where I haven't got the original and can't test, so I've no idea
  if they even work.

Driver     | Category | Resolution | Colours | Supported hardware
===========+==========+============+=========+===============================
SDATT5.EGA |        3 | 640x400    |  2      | AT&T 6300, Toshiba 3100
SDCGA5.CGA |        1 | 640x200    |  2      | CGA and compatibles
SDEH85.EGA |        2 | 640x350    |  8      | EGA colour
SDEHF5.EGA |        1 | 640x350    | 16      | EGA colour
SDEHM5.EGA |        2 | 640x350    |  2      | EGA mono 
SDEL85.CGA |        2 | 640x200    |  8      | EGA colour with CGA monitor
SDELF5.CGA |        2 | 640x200    | 16      | EGA colour with CGA monitor
SDHRC5.EGA |        1 | 640x350    |  2      | Hercules
SDKHM5.EGA |        3 | 720x350    |  2      | IBM 3270 PC
SDP645.VGA |        3 | 640x480    | 16      | Quadram Prosync
SDP755.VGA |        3 | 752x410    | 16      | Quadram Prosync
SDPSC5.VGA |        2 | 640x480    | 16      | VGA 
SDPSM5.VGA |        2 | 640x480    |  2      | MCGA 
===========+==========+============+=========+===============================

  Note that because I've worked backwards from the GEM/3 driver source 
tree, I've retained the GEM/3 driver naming convention; the real GEM/1
drivers have different names:

GEM/3 style name | GEM/1 style name
=================+===================
 SDATT5.EGA      | n/a
 SDCGA5.CGA      | IBMCHMP5.SYS
 SDEH85.CGA      | n/a
 SDEHF5.CGA      | IBMEHFP5.SYS
 SDEHM5.CGA      | n/a
 SDEL85.CGA      | n/a
 SDELF5.CGA      | n/a
 SDHRC5.CGA      | HERMONP5.SYS
 SDKHM5.EGA      | n/a
 SDP645.VGA      | n/a
 SDP755.EGA      | n/a
 SDPSC5.VGA      | n/a
 SDPSM5.VGA      | n/a
