diff options
Diffstat (limited to 'part_4/mylib/hex_to_7seg.v')
| -rw-r--r-- | part_4/mylib/hex_to_7seg.v | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/part_4/mylib/hex_to_7seg.v b/part_4/mylib/hex_to_7seg.v new file mode 100644 index 0000000..1c39f02 --- /dev/null +++ b/part_4/mylib/hex_to_7seg.v @@ -0,0 +1,38 @@ +//------------------------------
+// Module name: hex_to_7seg
+// Function: convert 4-bit hex value to drive 7 segment display
+// output is low active - using case statement
+// Creator: Peter Cheung
+// Version: 1.1
+// Date: 23 Oct 2011
+//------------------------------
+
+module hex_to_7seg (out,in);
+
+ output [6:0] out; // low-active output to drive 7 segment display
+ input [3:0] in; // 4-bit binary input of a hexademical number
+
+ reg [6:0] out; // make out a variable for use in procedural assignment
+
+ always @ (in)
+ case (in)
+ 4'h0: out = 7'b1000000;
+ 4'h1: out = 7'b1111001; // -- 0 ---
+ 4'h2: out = 7'b0100100; // | |
+ 4'h3: out = 7'b0110000; // 5 1
+ 4'h4: out = 7'b0011001; // | |
+ 4'h5: out = 7'b0010010; // -- 6 ---
+ 4'h6: out = 7'b0000010; // | |
+ 4'h7: out = 7'b1111000; // 4 2
+ 4'h8: out = 7'b0000000; // | |
+ 4'h9: out = 7'b0011000; // -- 3 ---
+ 4'ha: out = 7'b0001000;
+ 4'hb: out = 7'b0000011;
+ 4'hc: out = 7'b1000110;
+ 4'hd: out = 7'b0100001;
+ 4'he: out = 7'b0000110;
+ 4'hf: out = 7'b0001110;
+ endcase
+endmodule
+
+
|