X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/7d9d69c71187b4891b2281ab58ab8360e43290c2..039167e484194ff9f12fca2cc474f866a212f0cd:/Uart.v

diff --git a/Uart.v b/Uart.v
index f8ee27b..f87005d 100644
--- a/Uart.v
+++ b/Uart.v
@@ -8,8 +8,13 @@ module UART(
 	input wr,
 	input rd,
 	input [15:0] addr,
-	input [7:0] data,
-	output reg serial);
+	inout [7:0] data,
+	output reg serial = 1);
+	
+	wire decode = (addr == `MMAP_ADDR);
+	
+	wire [7:0] odata;
+	assign data = (rd && decode) ? odata : 8'bzzzzzzzz;
 
 	reg [7:0] data_stor = 0;
 	reg [15:0] clkdiv = 0;
@@ -17,7 +22,9 @@ module UART(
 	reg data_end = 0;
 	reg [3:0] diqing = 4'b0000;
 	
-	wire new = (wr) && (!have_data) && (addr == `MMAP_ADDR);
+	wire new = (wr) && (!have_data) && decode;
+	
+	assign odata = have_data ? 8'b1 : 8'b0;
 
 	always @ (negedge clk)
 	begin