INT 2F - FaxBIOS interface - INSTALLATION CHECK AX = 8000h DX = 0000h DI = 0000h Return: AL = FFh if installed DX:DI -> signature "FaxBiosjpc" Range: AH=80h to AH=FFh, selected by scanning multiplex numbers for signature SeeAlso: AH=2Ah,AX=80FBh