11.2.3.4.3 8-bit Up Counter with Load, Count Enable, Terminal Count and Asynchronous Reset

module count_load (out, cout, data, load, clk, en, reset);
parameter Width = 8;
input load, clk, en, reset;
input [Width-1:0] data;
output cout; // carry out
output [Width-1:0] out;
reg [Width-1:0] out;
always @(posedge clk or negedge reset)
if(!reset)
out = 8'b0;
else if(load)
out = data;
else if(en)
out = out + 1;
// cout=1 when all out bits equal 1
assign cout = &out;
endmodule