INT 10 - VIDEO - Compaq Extensions - GET EXTENDED ENVIRONMENT                   
	AX = BF11h
Return: AL = BFh if supported
	    CF clear
	    ES:DI -> ASCII signature "COMPAQ"
	    ES:SI -> advanced functionality table (see #00214)
Note:	supported by at least the QVision board and the LTE Lite and ProSignia
	  ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOSes
SeeAlso: AX=1A00h,AX=BF03h


Bitfields for Compaq advanced video functionality:
Bit(s)	Description	(Table 00214)
 31	future graphics extensions (reserved, set to 0)
 30-16	reserved
 15-12	available video memory in 256K blocks, less one (0000 = 256K, etc.)
 11-8	reserved
 7	QVision modes supported
 6	Advanced VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. modes supported
 5	Accelerated VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. modes supported
 4	standard VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. modes supported
 3-2	reserved
 1	132-column modes supported
 0	reserved