+ assign lcdclk = clk4;
+
+ /***** Video RAM *****/
+ /* Base is 0x8000
+ *
+ * Tile data from 8000-8FFF or 8800-97FF
+ * Background tile maps 9800-9BFF or 9C00-9FFF
+ */
+ reg [7:0] tiledata [6143:0];
+ reg [7:0] bgmap1 [1023:0];
+ reg [7:0] bgmap2 [1023:0];
+
+ /***** LCD control registers *****/
+ reg [7:0] rLCDC = 8'h91;
+ reg [7:0] rSTAT = 8'h00;
+ reg [7:0] rSCY = 8'b00;
+ reg [7:0] rSCX = 8'b00;
+ reg [7:0] rLYC = 8'b00;
+ reg [7:0] rDMA = 8'b00;
+ reg [7:0] rBGP = 8'b00;
+ reg [7:0] rOBP0 = 8'b00;
+ reg [7:0] rOBP1 = 8'b00;
+ reg [7:0] rWY = 8'b00;
+ reg [7:0] rWX = 8'b00;