INT 15 - Intel System Management Bus - RETRIEVE CRITICAL MESSAGES AX = 53B0h BH = 07h CX = 6941h ('iA') Return: CF clear if successful AH = 00h (SMBus(System Management Bus) A derivative of the I2C bus used for communication between various components of a computer, such as smart batteries and their chargers. In contrast to I2C, SMBus specifies fixed voltage levels (instead of relative to the power supply voltage) and a 10 KHz minimum clock rate (I2C minimum is 0). SMBus also specifies several timings which are not required by I2C. See also I2C, ACCESS.bus. OK) AL = device address BX = device message CF set if error AH = error code (05h,07h,08h,09h,0Ah,86h) (see #00484) Desc: retrieves oldest queued critical message from an SMBus(System Management Bus) A derivative of the I2C bus used for communication between various components of a computer, such as smart batteries and their chargers. In contrast to I2C, SMBus specifies fixed voltage levels (instead of relative to the power supply voltage) and a 10 KHz minimum clock rate (I2C minimum is 0). SMBus also specifies several timings which are not required by I2C. See also I2C, ACCESS.bus. device to the host Notes: up to five messages are queued; if the queue is full, messages will be lost and error 09h returned