6D INT 6D - VIDEO - many VGA - VIDEO BIOS ENTRY POINT
6D INT 6D - Trident SVGA - VIDEO BIOS HANDLER
6D INT 6D - DECnet DOS (before 2.1) - DATA LINK LAYER PROGRAM
6D INT 6D C - HP Vectra AT - IRQ21 - RESERVED HARDWARE INTERRUPT
6DBD60 INT 6D U - Matrox Multiple Monitor Support v1.0 - ???
6DBD61 INT 6D U - Matrox Multiple Monitor Support v1.0 - GET VIDEO MODE INFORMATION
6DBD6F INT 6D U - Matrox Multiple Monitor Support v1.0 - INSTALLATION CHECK
6DBDFF INT 6D U - Matrox Multiple Monitor Support v1.0 - UNHOOK INTERRUPT (UNINSTALL)