INT 67 - VIDEMS.SYS v1.50+ - RETURN VIDEO RAM(Random Access Memory)	See also DRAM, SRAM. SIZE
	AX = 2763h
	CL = 06h
	BX = signature AAFFh
Return: AH = 00h
	DX = total amount of video RAM(Random Access Memory)	See also DRAM, SRAM.
Desc:	beginning with version 1.50, VIDEMS can use more adapter memory on
	  some chipsets, and is no longer limited to the first 240K.
Notes:	this call is not officially documented, and Conea programmers use it
	  mainly for debugging purposes.