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module `VARIANT`CHAR_DISPLAY

#(parameter H_ACTIVE=0

)

(

input wire          clk,

input wire          reset,

input wire [6:0]    char_column,    // character number on the current line

input wire [6:0]    char_line,      // line number on the screen

input wire [2:0]    subchar_line,   // the line number within a character block 0-8

input wire [2:0]    subchar_pixel,  // the pixel number within a character block 0-8

input wire [7:0]    ascii_code,

output wire         pixel_on,

output reg [13:0]   char_read_addr,

input wire [13:0]   char_write_addr,

input wire [7:0]    char_write_data,

input wire          char_write_enable

 );

always @ (*)

     begin

     char_read_addr    = (char_line[6:0] * H_ACTIVE / 8 ) + {7'b0000000,char_column[6:0]};

     end

// the character generator block includes the character RAM

// and the character generator ROM

`VARIANT`CHAR_GEN

 CHAR_GEN

(

 .clk                ( clk               ),

 .reset              ( reset             ),  // reset signal

 .char_write_addr    ( char_write_addr   ),  // write address

 .char_write_data    ( char_write_data   ),  // write data

 .char_write_enable  ( char_write_enable ),  // write enable

 .char_read_addr     ( char_read_addr    ),  // read address of current character

 .subchar_line       ( subchar_line      ),  // current line of pixels within current character

 .subchar_pixel      ( subchar_pixel     ),  // current column of pixels withing current character

 .pixel_on           ( pixel_on          ),

 .ascii_code         ( ascii_code        )

);

endmodule //CHAR_DISPLAY