This code has been tested only under Linux on DEC's UDB box (Multia), the ZLZp-E1 (8-plane TGA), and the ZLXp-E2 (24-plane TGA). The ZLXp-E3 (24-plane+3D TGA) is untested but should work.
$XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/DECtga.sgml,v 3.6.2.5 1998/11/07 13:37:46 dawes Exp $