| 摘要 |
A circuit, designed for supporting a computer system having a CPU, a monitor, and a system memory electrically connected to the CPU, includes a south bridge, and a north bridge electrically connected to the south bridge, the CPU, and the monitor. The north bridge includes a state machine and a graphics data buffer. When detecting that graphics data transferred by the graphics data buffer to the monitor is insufficient, the state machine sends a north bridge signal to the CPU to access inner data of the system memory.
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