backspace and enter key, reset VGA in verilog HDL?

module VGA3 (clk, reset, ps2_data, ps2_clk, h_sync, v_sync,rgb);

input clk, reset;

input ps2_data, ps2_clk;

output h_sync, v_sync;

output wire [2:0] rgb;

wire [6:0] ascii_in;

wire write_disable, write_enable;

//reg Transmit_on;

//localparam Enter_key = 8'h0A;

// body

// instantiate keyboard scan code circuit

keyboard_code keyboard_controller_block_unit

(.clk(clk),

.reset(reset),

.ps2_data(ps2_data),

.ps2_clk(ps2_clk),

.read_code(write_disable),

.write_enable(write_enable),

.ascii_code(ascii_in));

// instantiate top level vga display circuit

top_vga_display_controller vga_display_controller_block_unit

(.clk(clk),

.reset(reset),

.w_enable(write_disable),

.ascii_in(ascii_in),

.h_sync(h_sync),

.v_sync(v_sync),

.rgb(rgb));

/*

always @*

if(ascii_in == Enter_key)

Transmit_on = 1;

else

Transmit_on = 0;

*/

//assign write_disable = ~Transmit_on;

assign write_disable = ~write_enable;

endmodule