Subversion Repositories programming

Rev

Rev 205 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 205 Rev 206
Line 106... Line 106...
106 
    end
 106 
    end
107 
 
 107 
 
108 
    always @(negedge clk) begin
 108 
    always @(negedge clk) begin
109 
        counter = counter + 'b1;
 109 
        counter = counter + 'b1;
110 
    end
 110 
    end
111 
/*
 111
- 
 
 112 
    /* //DEBUGGING INFORMATION
112 
    initial begin
 113 
    initial begin
113 
        $monitor ("time=%0d counter=%b clk=%b w_mout=%b w_prod=%b w_aop=%b w_sop=%b w_wop=%b out=%b",
 114 
        $monitor ("time=%0d counter=%b clk=%b w_mout=%b w_prod=%b w_aop=%b w_sop=%b w_wop=%b out=%b",
114 
               $time, counter, clk, w_mout, w_prod, w_aop, w_sop, w_wop, out);
 115 
               $time, counter, clk, w_mout, w_prod, w_aop, w_sop, w_wop, out);
115 
    end
 116 
    end
116 
*/
 117 
    */
- 
 
 118
117 
    wire[0:7] w_prod;
 119 
    wire[0:7] w_prod;
118 
    wire[0:3] w_mout, w_alu_out;
 120 
    wire[0:3] w_mout, w_alu_out;
119 
    wire[0:1] w_aop;
 121 
    wire[0:1] w_aop;
120 
    wire w_sop, w_wop, w_cout;
 122 
    wire w_sop, w_wop, w_cout;
121 
    reg cin;
 123 
    reg cin;
Line 123... Line 125...
123 
    MUL4_PRODUCT mp (w_alu_out, a, w_sop, w_wop, w_prod, clk);
 125 
    MUL4_PRODUCT mp (w_alu_out, a, w_sop, w_wop, w_prod, clk);
124 
    MUL4_MULTIPLICAND mm (b, w_mout, clk);
 126 
    MUL4_MULTIPLICAND mm (b, w_mout, clk);
125 
    MUL4_CONTROL mc (w_prod[7], w_aop, w_wop, w_sop, clk, counter);
 127 
    MUL4_CONTROL mc (w_prod[7], w_aop, w_wop, w_sop, clk, counter);
126 
    ALU4 ma (w_prod[0:3], w_mout, cin, w_aop, w_cout, w_alu_out);
 128 
    ALU4 ma (w_prod[0:3], w_mout, cin, w_aop, w_cout, w_alu_out);
127 
 
 129 
 
- 
 
 130 
    // Set the output, since we have a valid result right now.
- 
 
 131 
    // Also reset the counter every time it reaches 4, it is used
- 
 
 132 
    // to keep the MUL4_CONTROL in sync.
128 
    always @(counter) begin
 133 
    always @(counter) begin
129 
        if (counter == 4) begin
 134 
        if (counter == 4) begin
130 
            force out = w_prod;
 135 
            force out = w_prod; // set the output
131 
            counter = 'b1111; //reset counter
 136 
            counter = 'b1111; // reset counter
132 
        end else begin
 137 
        end else begin
133 
            release out;
 138 
            release out;
134 
        end
 139 
        end
135 
    end
 140 
    end
136 
 
 141