PORTIBM PC Portable (uses same BIOS as XT) 13C6 - Compaq - VIDEO STATUS???
Note:	this port is read by the Compaq MS-DOS 4.0/5.0 CHARSET utility

13C6  R?  Compaq video status??? (see #P0978)


Bitfields for Compaq video status???:
Bit(s)	Description	(Table P0978)
 7	???
 6	flag
 5-3	???
 2-0	status of display???
	(in the context of video mode detection on mono/color systems)