diff options
Diffstat (limited to 'part_1/mylib/bin2bcd_10.v')
| -rw-r--r-- | part_1/mylib/bin2bcd_10.v | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/part_1/mylib/bin2bcd_10.v b/part_1/mylib/bin2bcd_10.v new file mode 100644 index 0000000..970d330 --- /dev/null +++ b/part_1/mylib/bin2bcd_10.v @@ -0,0 +1,59 @@ +module ex4_top (
+ input [9:0] SW,
+ output [6:0] HEX0,
+ output [6:0] HEX1,
+ output [6:0] HEX2,
+ output [6:0] HEX3
+ );
+
+
+ reg [3:0] BCD0;
+ reg [3:0] BCD1;
+ reg [3:0] BCD2;
+ reg [3:0] BCD3;
+
+ integer i;
+ always @ (*)
+ begin
+ BCD0 = 4'd0;
+ BCD1 = 4'd0;
+ BCD2 = 4'd0;
+ BCD3 = 4'd0;
+
+ for (i=9; i>=0; i=i-1)
+ begin
+ if (BCD3 >= 5)
+ BCD3 = BCD3 +3;
+ if (BCD2 >= 5)
+ BCD2 = BCD2 +3;
+ if (BCD1 >= 5)
+ BCD1 = BCD1 +3;
+ if (BCD0 >= 5)
+ BCD0 = BCD0 +3;
+
+ // shift each digit
+ BCD3 = BCD3 << 1;
+ BCD3[0] = BCD2[3];
+
+ BCD2 = BCD2 << 1;
+ BCD2[0] = BCD1[3];
+
+ BCD1 = BCD1 << 1;
+ BCD1[0] = BCD0[3];
+
+ BCD0 = BCD0 << 1;
+ BCD0[0] = SW[i];
+ end
+
+ end
+
+ hex_to_7seg SEG3 (HEX3, BCD3);
+ hex_to_7seg SEG2 (HEX2, BCD2);
+ hex_to_7seg SEG1 (HEX1, BCD1);
+ hex_to_7seg SEG0 (HEX0, BCD0);
+endmodule
+
+
+
+
+
\ No newline at end of file |