Initial and probably final commitHEADmaster

1 files changed, 46 insertions, 0 deletions

diff --git a/2-b.v b/2-b.v
new file mode 100644
index 0000000..55feec1
--- /dev/null
+++ b/2-b.v
@@ -0,0 +1,46 @@
+module max_argmax(data_in, data_max, argmax);
+	parameter WIDTH=8, SIZE=2;
+	input [WIDTH*(1<<SIZE)-1:0] data_in;
+	output [WIDTH-1:0] data_max;
+	output [SIZE-1:0] argmax;
+	if (SIZE == 1) begin
+		wire [WIDTH-1:0]
+			a1 = data_in[WIDTH*2-1:WIDTH],
+			a2 = data_in[WIDTH-1:0];
+		assign data_max = a1 > a2 ? a1   : a2;
+		assign argmax   = a1 > a2 ? 1'b0 : 1'b1;
+	end else begin
+		wire [WIDTH*(1<<(SIZE-1))-1:0]
+			w1 = data_in[WIDTH*(1<<SIZE)-1:WIDTH*(1<<(SIZE-1))],
+			w2 = data_in[WIDTH*(1<<(SIZE-1))-1:0];
+		wire [WIDTH-1:0] a1, a2;
+		wire [SIZE-2:0] i1, i2;
+		max_argmax#(WIDTH, SIZE-1) m1(w1, a1, i1);
+		max_argmax#(WIDTH, SIZE-1) m2(w2, a2, i2);
+		assign data_max         = a1 > a2 ? a1   : a2;
+		assign argmax[SIZE-2:0] = a1 > a2 ? i1   : i2;
+		assign argmax[SIZE-1]   = a1 > a2 ? 1'b0 : 1'b1;
+	end
+endmodule
+
+/*
+module test;
+	reg [63:0]vals;
+	wire [7:0]out;
+	wire [2:0]idx;
+	max_argmax#(8, 3) adder(vals, out, idx);
+	initial begin
+		$monitor("%d, %b", out, idx);
+		vals[63:56] = 25;
+		vals[55:48] = 24;
+		vals[47:40] = 25;
+		vals[39:32] = 13;
+		vals[31:24] = 25;
+		vals[23:16] = 121;
+		vals[15:8] = 2;
+		vals[7:0] = 200;
+		#1;
+	end
+endmodule
+*/
+