INT 2F - AVATAR(Advanced Video Attribute Terminal Assembler and Recreator) A set of control codes which may be used to affect the output of characters to the screen on systems equipped with an appropriate driver.	 Similar in intent to ANSI sequences, AVATAR has shorter command sequences and provides additional PC-specific functionality. AVATAR is primarily used by the Opus and Maximus bulletin board systems (it was designed by one of the developers of the Opus system)..SYS - QUERY DRIVER STATE
	AX = 1A3Fh (AL='?')
	ES:DI -> buffer
	CX = length of buffer in bytes
Return: CF clear
	CX = actual size of returned info
Note:	the returned information consists of multiple letters whose meanings
	  are described under AX=1A21h
SeeAlso: AX=1A00h/BX=4156h,AX=1A21h,AX=1A44h