INT 15 - Intel System Management Bus - REQUEST ABORT AX = 53B0h BH = 12h BL = protocol (see #00487) CH = device address CL = device command Return: CF clear if successful AH = 00h (SMBus OK) CF set if error AH = error code (05h,13h,15h,16h,86h) (see #00484) Desc: stop the currently pending SMBus request; usually used to terminate a request after an SMI Detected error