From 4b6e0102d20d9ab060ce930e4b846c8be446bb06 Mon Sep 17 00:00:00 2001 From: Vasil Zlatanov Date: Mon, 12 Dec 2016 21:51:10 +0000 Subject: public push --- part_4/ex16/add3_ge5.v | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 part_4/ex16/add3_ge5.v (limited to 'part_4/ex16/add3_ge5.v') diff --git a/part_4/ex16/add3_ge5.v b/part_4/ex16/add3_ge5.v new file mode 100644 index 0000000..0daf78a --- /dev/null +++ b/part_4/ex16/add3_ge5.v @@ -0,0 +1,31 @@ +//------------------------------ +// Module name: add3_ge5 +// Function: Add 3 to input if it is 5 or above +// Creator: Peter Cheung +// Version: 1.0 +// Date: 21 Jan 2014 +//------------------------------ + +module add3_ge5(w,a); + input [3:0] w; + output [3:0] a; + reg [3:0] a; + + always @ (w) + case (w) + 4'b0000: a <= 4'b0000; + 4'b0001: a <= 4'b0001; + 4'b0010: a <= 4'b0010; + 4'b0011: a <= 4'b0011; + 4'b0100: a <= 4'b0100; + 4'b0101: a <= 4'b1000; + 4'b0110: a <= 4'b1001; + 4'b0111: a <= 4'b1010; + 4'b1000: a <= 4'b1011; + 4'b1001: a <= 4'b1100; + 4'b1010: a <= 4'b1101; + 4'b1011: a <= 4'b1110; + 4'b1100: a <= 4'b1111; + default: a <= 4'b0000; // a cannot be 13 or larger, else overflow + endcase +endmodule \ No newline at end of file -- cgit v1.2.3-54-g00ecf