INT 10 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. Window Extension v1.1 - GET BLANKING ATTRIBUTE
	AH = 12h
Return: BH = attribute to use on blanked lines when scrolling
Program: BWE is a TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. by John J. Seal published in May 1986 Dr. Dobb's Journal
SeeAlso: AH=11h"Window",AH=12h"Window"
                                                                                

INT 10 - Tandy 2000 - VIDEO - SCROLL WINDOW                                     
	AH = 12h
	AL = number of rows or columns to scroll
	BH = buffer flag
	    00h data in user buffer
		ES:SI -> buffer containing character/attribute pairs
	    01h no buffer, fill emptied rows/columns with blanks
	BL = direction in which to scroll
	    00h up
	    01h down
	    02h left
	    03h right
	CH,CL = row,column of upper left corner of scroll area
	DH,DL = row,column of lower right corner
Return: nothing
Notes:	this interrupt is identical to INT 52 on Tandy 2000
	the user buffer, if supplied, must be organized by row; regardless of
	  the scroll direction, all character/attribute pairs for the first
	  row are first, then the pairs for the second row, etc.
SeeAlso: AH=00h,AH=0Bh/BH=02h,AH=11h"Tandy 2000",AH=12h"Tandy 2000"
SeeAlso: INT 52"Tandy"