INT 15 U - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. PCI BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. v1.00.05.AX1 - ??? AH = DAh AL = function (00h-08h,12h,14h,15h,19h,88h-8Eh,92h,99h) other registers vary by function Return: CF clear if successful varies by function CF set on error AH = error code (86h unsupported [sub]function) Note: functions not listed above always return CF set and AH=86h; in the examined BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly., functions 02h-04h,06h-07h,89h-8Bh, and 8Dh also always return CF set and AH=86h SeeAlso: AX=DA00h,AX=DA01h,AX=DA88h,AX=DA99h,AX=DB00h