?? control.v
字號:
module control(clk1,clk2,i,OE,reset);parameter state_reset=9;parameter state_spare=8;input clk1,clk2;output[2:0] i;output OE;output reset;reg reset;reg OE;reg[2:0] i;reg[3:0] state,next_state;always @(posedge clk1) state<=state_reset;always @(posedge clk2) state<=next_state;always @(state)begin case(state) state_reset:begin next_state=0;reset=0;OE=0;i=7;end 0:begin next_state=1;reset=1;OE=0;i=0;end 1:begin next_state=2;reset=1;OE=0;i=1;end 2:begin next_state=3;reset=1;OE=0;i=2;end 3:begin next_state=4;reset=1;OE=0;i=3;end 4:begin next_state=5;reset=1;OE=0;i=4;end 5:begin next_state=6;reset=1;OE=0;i=5;end 6:begin next_state=7;reset=1;OE=0;i=6;end 7:begin next_state=state_spare;OE=0;i=7;end state_spare:begin next_state=state_spare;reset=1;OE=1;i=7;end default begin next_state=state_spare;reset=1;OE=0;i=7;end endcaseend endmodule
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