INT 10 - DOS/V - READ/WRITE DOUBLE-BYTE CHARACTER SET CHARACTERS/ATTRIBUTES     
	AH = 13h
	AL = function
	    10h read characters and standard attributes
	    11h read characters and extended attributes
	    12h write characters and standard attributes
	    13h write characters and extended attributes
	BH = 00h
	CX = number of characters to transfer
	DH,DL = row,column at which to start transfer
	ES:BP -> buffer for/containing characters and attributes (see #00036)
Return: ES:BP buffer filled if reading
Program: DOS/V is a Japanese-language version of MS-DOS which can run on
	  standard (non-Japanese) ATs and compatible equipped with a VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. or
	  newer video adapter
Notes:	subfunctions 11h and 13h are only valid when DOS/V is using video
	  mode 73h
	the cursor position is not changed by these functions
	extended attributes consist of three bytes; the first is the standard
	  character attribute byte, the second is as described below, and the
	  third is always zero in current versions
SeeAlso: AH=00h,AH=13h"VIDEO"


Bitfields for DOS/V second extended attribute byte:
Bit(s)	Description	(Table 00036)
 7	underline using foreground color
 6	reverse foreground/background specified in standard attribute byte
 5-4	unused
 3	vertical white grid line in cell
 2	horizontal white grid line in cell
 1-0	unused
SeeAlso: #00014,#00026