panel.v

Abstract A new intelligent milometer base on a microcontroller can count the sum. By taking full u

// Copyright (c) Charles HY Cheung, Cornell University
// Interfaces PS/2 keyboard keys to OSCILLOSCOPE and TRACE control

module PANEL (
input keyboardclk,
input reset,
input [7:0] key_code,
output reg [20:0] f1, //value+5 (when pressed)
//output reg [20:0] f2, //value-5 (when pressed)
//output reg [20:0] f3, //value+10 (when pressed)
//output reg [20:0] f4, //value-10 (when pressed)
output reg [20:0] f5, //value+1 (when pressed)
//output reg [20:0] f6, //value-1 (when pressed)
output reg [20:0] f7, //value+1 (when pressed)
//output reg [20:0] f8, //value-1 (when pressed)
output reg [20:0] f9, //value+1 (when pressed)
//output reg [20:0] f10, //value-1 (when pressed)
output reg [20:0] f11, //value+1 (when pressed)
//output reg [20:0] f12, //value-1 (when pressed)
output space,
output enter,
output esc
);

assign space = (key_code == 8'h39)?1:0;
assign enter = (key_code == 8'h1c)?1:0;
assign esc = (key_code == 8'h01)?1:0;

always @(posedge keyboardclk or posedge reset)
begin
	if (reset)
	begin
		f1 <= 0;f5 <=0;
		f7 <= 0;f9 <= 0;f11 <=0;
	end
	else
	begin
		case (key_code)
			8'h3b: f1 <= f1 + 5;
			8'h3c: f1 <= f1 - 5;
			8'h3d: f1 <= f1 + 10;
			8'h3e: f1 <= f1 - 10;	
			8'h3f: f5 <= f5 + 2;	
			8'h40: f5 <= f5 - 2;	
			8'h41: f7 <= f7 + 2;	
			8'h42: f7 <= f7 - 2;
			8'h43: f9 <= f9 + 1;	
			8'h44: f9 <= f9 - 1;
			8'h57: f11 <= f11 + 1;
			8'h58: f11 <= f11 - 1;
//			8'h39: space <= 1;//space
//			8'h1c: enter <= 1;//enter
//			8'h01: esc	 <= 1;//esc
		endcase
	end
end

endmodule