Category: expansion bus BIOSes
INT 15 - Intel System Management Bus - INSTALLATION CHECK AX = 53B0h BH = 01h BL = 72h ('r') CX = 6164h ('ad') Return: CF clear if installed AH = SMBus BIOS Interface Specification major version (01h) AL = SMBus BIOS Interface Specification minor version (00h) BL = number of SMBus devices present CX = 6941h ('iA') DX = vendor-specified SMBus hardware code 0000h means undefined hardware type CF set if error AH = Error code 0Ah, 86h (see #00484) Note: this function is only supported in INT 15h mode SeeAlso: AX=53B0h/BH=02h,AX=53B0h/BH=03h,AX=53B0h/BH=04h,AX=53B0h/BH=06h SeeAlso: #01105 at INT 1A/AX=B10Ah/SF=8086h