| | 1 | module AddrMon( |
| | 2 | input [15:0] addr, |
| | 3 | input clk, |
| | 4 | output reg [3:0] digit, |
| | 5 | output reg [7:0] out, |
| | 6 | input freeze |
| | 7 | ); |
| | 8 | |
| | 9 | reg [5:0] clkdv; |
| | 10 | reg [1:0] dcount; |
| | 11 | |
| | 12 | reg [15:0] latch = 0; |
| | 13 | |
| | 14 | wire [3:0] curval = |
| | 15 | (dcount == 2'b00) ? latch[3:0] : |
| | 16 | (dcount == 2'b01) ? latch[7:4] : |
| | 17 | (dcount == 2'b10) ? latch[11:8] : |
| | 18 | latch[15:12]; |
| | 19 | |
| | 20 | always @ (negedge clk) begin |
| | 21 | if (clkdv == 31) begin |
| | 22 | clkdv <= 0; |
| | 23 | dcount <= dcount + 1; |
| | 24 | |
| | 25 | case(dcount) |
| | 26 | 2'b00: digit <= 4'b1110; |
| | 27 | 2'b01: digit <= 4'b1101; |
| | 28 | 2'b10: digit <= 4'b1011; |
| | 29 | 2'b11: digit <= 4'b0111; |
| | 30 | endcase |
| | 31 | |
| | 32 | case(curval) |
| | 33 | /* ABCDEFGP */ |
| | 34 | 4'h0: out <= ~8'b11111100; |
| | 35 | 4'h1: out <= ~8'b01100000; |
| | 36 | 4'h2: out <= ~8'b11011010; |
| | 37 | 4'h3: out <= ~8'b11110010; |
| | 38 | 4'h4: out <= ~8'b01100110; |
| | 39 | 4'h5: out <= ~8'b10110110; |
| | 40 | 4'h6: out <= ~8'b10111110; |
| | 41 | 4'h7: out <= ~8'b11100000; |
| | 42 | 4'h8: out <= ~8'b11111110; |
| | 43 | 4'h9: out <= ~8'b11110110; |
| | 44 | 4'hA: out <= ~8'b11101110; |
| | 45 | 4'hB: out <= ~8'b00111110; |
| | 46 | 4'hC: out <= ~8'b10011100; |
| | 47 | 4'hD: out <= ~8'b01111010; |
| | 48 | 4'hE: out <= ~8'b10011110; |
| | 49 | 4'hF: out <= ~8'b10001110; |
| | 50 | endcase |
| | 51 | end else |
| | 52 | clkdv <= clkdv + 1; |
| | 53 | if (~freeze) |
| | 54 | latch <= addr; |
| | 55 | end |
| | 56 | endmodule |
git.joshuawise.com / fpgaboy.git / blame_incremental