EDA课程设计拔河游戏机(10)

eda课程设计,游戏机!vhdl语言,Quartus II 7.0

end if; end process;

process(sub) begin

if(sub=0) then

pat<='1'; else

pat<='0'; end if;

carrier<=pat; end process;

process(clk) begin

if(clk'event and clk='1')then pat1<=pat; end if; end process;

process(pat1) begin

if(pat1'event and pat1='1') then pat2<= not pat2; end if;

music_out<=pat2; end process;

process(clk_4) begin

if(clk_4'event and clk_4='1') then if(music_begin='1') then

counter<=counter+1; else

counter<=0; end if; end if; end process;

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