| 摘要 |
A Compact Peripheral Component Interconnect (CPCI) system includes a circuit board with a front card (e.g., motherboard) coupled to a power supply via the circuit board. The CPCI system is adapted to provide for the dynamic control and change of power sequences during the front card's lifetime. That is, as power sequencing requirements evolve, change or deviate from what was the standard, the present extended front card can automatically evolve, change or deviate from what was the standard. The front card may also control and change power sequences without requiring modification to be made to the hardware of the front card. In one embodiment, the front card uses a microprocessor firmware on a secondary processor to control and change power sequences for a main processor. By combining microprocessor firmware control with readily available hardware components on the front card, a low-cost and highly flexible means of control power sequencing of the front card upon insertion or extraction can be implemented. The front card may also be a High Availability (HA) and/or a hotswappable front card. In another embodiment, the microprocessor firmware is extended to control the hotswap and power sequencing functions of the front card.
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