// CPEN 230 lab 9 part 3, 4-bit synchronous counter on the DE2-115 board
// Firstname Lastname, date
// File: counter4bit_top.v

module counter4bit_top (
  input  [2:0] KEY,      // Clock, Enable, nReset
  output [3:0] LEDR,     // discrete red LEDs for output
  output [6:0] HEX0 );   // 7-segment display for output

  wire [3:0] count_w;    // to connect rippleCounter to hex7seg

  counter4bit inst0 (
    .Clock  (KEY[2]),    // key press and release makes a pos. edge on Clock
    .nReset (KEY[0]),    // key press resets
    .Enable (KEY[1]),    // key press disables
    .Count  (count_w) );

  assign LEDR = count_w; // count out to 4 red LEDs

  hex7seg inst1 (        // count out to 7-segment display
    .num_i  (count_w),
    .disp_o (HEX0) );

endmodule