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Sep 20th, 2017
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  1. module counter(input clk_50, input clk_misc, input switch, output ledbit1, output ledbit8);
  2.  
  3. reg [25:0] counter1, counter2;
  4.  
  5. always @(posedge clk_50) begin
  6.     counter1 <= counter1 + 1;
  7. end
  8.  
  9. always @(posedge clk_misc) begin
  10.     counter2 <= counter2 + 1;
  11. end
  12.  
  13. //assign ledbit1 = counter1[25];
  14. //assign ledbit8 = counter2[25];
  15. assign led = counter1[25:24];
  16. assign lcd_e = 0;
  17.  
  18. endmodule
  19.  
  20. ---Constraint file---
  21.  
  22. CONFIG VCCAUX = "3.3";
  23. CONFIG ENABLE_SUSPEND = "FILTERED";
  24. CONFIG POST_CRC = "DISABLE";
  25.  
  26. NET "lcd_e" LOC = "AB4";
  27.  
  28. NET "clk_50" LOC = "E12";
  29. NET "clk_misc" LOC = "V12";
  30.  
  31. net "led<0>" LOC = "R20";
  32. net "led<1>" LOC = "W21";
  33.  
  34. net "switch" LOC = "T9";
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