[HDLBits] Fsm ps2data

See also:PS/2 packet parser.

Now that you have a state machine that will identify three-byte messages in a PS/2 b服务器托管网yte stream, add a datapath that will also output the 24-bit (3 byte) message whenever a packet is received (out_bytes[23:16]is the first byte,out_bytes[15:8]is the second byte, etc.).

out_bytesneeds to be valid whenever thedonesignal is asserted. You may output anything at other times (i.e., don’t-care).

module top_module(
    input clk,
    input [7:0] in,
    input reset,    // Synchronous reset
    output [23:0] out_bytes,
    output done); //
	//四个状态：没找到字节、找到第一个、第二个和第三个
    // State transition logic (combinational)
    reg [1:0] state,next;
    always@(*) begin
        ca服务器托管网se(state)
            0:next

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