INT 10 - VIDEO - XGA(Extended Graphics Array) - MAINFRAME INTERACTIVE SUPPORT
	AH = 12h
	BL = 37h
	AL = text attribute type (00h normal VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers., 01h mainframe type)
Return: AL = 12h if supported
SeeAlso: #00026,AH=08h,#00042


Bitfields for XGA(Extended Graphics Array) mainframe type character attributes:
Bit(s)	Description	(Table 00026)
 7	blink double rate (75% ON time) or use color 8 as background
	(see AX=1003h)
 6	reverse video
 5	underlined
 4	left-most and right-most dots of underline area inverted
 3	foreground intensity/character font select
 2-0	foreground color
SeeAlso: #00014,#00036