PCIe memory disk hot plug system based on FPGA

The invention discloses an FPGA-based PCIe memory disk hot plug system, which comprises an in-place state monitoring module, a command state detection module and a control module, and is characterized in that the in-place state monitoring module is used for detecting an in-place signal and a gate state signal of an SSD card, outputting a low level when the PCIe SSD is in place, and outputting a high level when the PCIe SSD is not in place; an in-place state signal of the PCIe SSD is detected through the state machine module; the command state detection module is used for judging whether a command for controlling hot plugging is in a process or not, outputting a high level when the command is in the process, and outputting a low level when the command is not in the process; and the control module is used for receiving the state signal transmitted by the command state detection module and controlling the jumping of the state machine according to the state signal. The hot plug of the PCIe SSD is controlled throu