我正在开发一个程序，该程序将采用 BCD 值，将其转换为二进制，并将给定值倒计时为 0。BCD 转换模块运行良好，但似乎我的“微波”模块没有被调用。
我这个程序的输出是：
time = xxxxxxxx bcdtime = 0001 0010
time = 00001100 bcdtime = 0001 0010
我可以看到转换，但倒计时不会发生。谁能解释我可能出错的地方或指出可以帮助我回答这个问题的资源方向？我的代码如下：
module bcd_to_bin(bintime,bcdtime1,bcdtime0);
input [3:0] bcdtime1,bcdtime0;
output [7:0] bintime;
assign bintime = (bcdtime1 * 4'b1010) + {3'b0, bcdtime0};
endmodule
module microwave(bintimeout, Clk, Start, Stop, bintime, status);
input [7:0] bintime;
input Clk, Start, Stop;
output reg [7:0] bintimeout;
output reg status;
always @ (posedge Start)
begin
assign bintimeout = bintime;
end
always @ (posedge Clk)
begin
bintimeout = bintimeout - 1;
end
endmodule
module t_microwave;
wire status;
wire [7:0] bintimeout;
reg Clk=1; reg Start, Stop;
reg [3:0] bcdtime1, bcdtime0;
wire [7:0] bintime;
microwave M2 (bintimeout, Clk, Start, Stop, bintime, status);
bcd_to_bin M3 (bintime,bcdtime1,bcdtime0);
always #10 Clk = ~Clk;
initial
begin
Start = 0; Stop = 0; bcdtime1 = 4'b0001; bcdtime0 = 4'b0010;
#10 Start = 1; #10 Start = 0;
end
initial #10000 $finish;
initial
begin
$monitor ("time = %b, bcdtime = %b %b ", bintimeout, bcdtime1, bcdtime0);
end
endmodule