vistaでquartus その9

概要

vistaでquartusやってみた。
zundokoやってみた。

環境

windows vista 32bit
quartus ii v13.0
ep2c5t144ボード

写真

サンプルコード

module test2(input clk, input rst, output tx);
	localparam NEXT = 4'b0000;
	localparam DONE = 4'b1111;
	reg [7:0] r;
	reg [3:0] n;
	reg [7:0] char;
	reg [3:0] state = NEXT;
	reg send = 0;
	reg [23:0] cnt;
	wire clk2 = cnt[13];
	tx1 tx1(.clk(clk), .rst(rst), .send(send), .data(char), .tx(tx), .ed(ed));
	always @(posedge clk)
	begin
		cnt <= cnt + 1'b1;
	end
	always @(posedge clk2)
	begin
		send <= 0;
		if (ed)
		begin	
			if (rst == 0)
			begin
				state <= NEXT;
				r <= 234;
				n <= 0;
			end
			else if (state == NEXT)
			begin
				r <= r * 5 + 1;
				state <= 1;
			end
			else if (state != DONE)
			begin
				if (n == 4)
				begin
					case (state)
					1:
					begin
						char <= "d";
						state <= state + 1;
					end
					2:
					begin
						char <= "o";
						state <= state + 1;
					end
					3:
					begin
						char <= "k";
						state <= state + 1;
					end
					4:
					begin
						char <= "o";
						state <= state + 1;
					end
					5:
					begin
						char <= "k";
						state <= state + 1;
					end
					6:
					begin
						char <= "i";
						state <= state + 1;
					end
					7:
					begin
						char <= "y";
						state <= state + 1;
					end
					8:
					begin
						char <= "o";
						state <= state + 1;
					end
					9:
					begin
						char <= "s";
						state <= state + 1;
					end
					10:
					begin
						char <= "i";
						state <= DONE;
					end
					endcase
				end
				else if (r < 127)
				begin
					case (state)
					1:
					begin
						char <= "z";
						state <= state + 1;
					end
					2:
					begin
						char <= "u";
						state <= state + 1;
					end
					3:
					begin
						char <= "n";
						state <= state + 1;
					end
					4:
					begin
						char <= " ";
						n <= n + 1;
						state <= NEXT;
					end
					endcase
				end
				else 
				begin
					case (state)
					1:
					begin
						char <= "d";
						state <= state + 1;
					end
					2:
					begin
						char <= "o";
						state <= state + 1;
					end
					3:
					begin
						char <= "k";
						state <= state + 1;
					end
					4:
					begin
						char <= "o";
						state <= state + 1;
					end	
					5:
					begin
						char <= " ";
						n <= 0;
						state <= NEXT;
					end
					endcase
				end
				send <= 1;
			end
		end
	end
endmodule

以上。