Providing a computer system and method for transmitting through a parallel communication bus, the present invention relates interrupt message. [SOLUTION] The computer system includes a first device in operative communication with the second device through the parallel communication bus. The first device is configured to transmit a first interrupt message through the parallel communication bus to the second device. Here, a first interrupt message has a data portion having a plurality of bits having a first identifier identifying the first device. [Selection] Figure Figure 1
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