AX = 4000h Return:AX = 1541h if installed BH = I1541 major version (BCD) BL = I1541 minor version (BCD) CX = 0000h
Return:AX = 1541h if installed BH = I1541 major version (BCD) BL = I1541 minor version (BCD) CX = 0000h
Category: TSR Libraries - Int 14h - I
