// Hint for LSU EE 4702-1 Spring 2000 Homework 4. // The iterator function is a convenient method for implementing // a pattern of missing marks. module hint(); parameter marks = 4; parameter it_next_mark = 0; // parameters for other iterator operations goes here. reg pd; time markon, markoff; function integer iterator; input [1:0] operation; integer pattern[99:0]; integer pptr; begin if( operation == it_next_mark ) begin iterator = pattern[pptr]; pptr = pptr + 1; if( pptr === marks ) pptr = 0; end else begin // Code for initializing pattern goes here. end end endfunction // iterator initial begin //...; forever begin if( iterator(it_next_mark) ) pd <= 1; #markon; pd <= 0; #markoff; end end endmodule // hint