[J-Uart]

- use LSB first for UART
- Uart_wb: added generic for default baudrate and fifo depth

git-svn-id: http://moon:8086/svn/vhdl/trunk@1358 cc03376c-175c-47c8-b038-4cd826a8556b

lib/uart/juart_tx.vhd

@@ -51,7 +51,7 @@ signal bit_count			: unsigned (3 downto 0);
 --
 --
 begin
-ser_out		<= shiftreg(shiftreg'left);
+ser_out		<= shiftreg(0);
 Tx_complete	<= not busy;
 
 shift_enable_counter:
@@ -103,9 +103,9 @@ begin
 		elsif shift_enable = '1' then
 			if start = '1' then
 				start		<= '0';
-				shiftreg	<= '0' & dinreg & '1';
+				shiftreg	<= '1' & dinreg & '0';
 			elsif bit_count /= 0 then
-				shiftreg	<= shiftreg(shiftreg'left-1 downto 0) & '1';
+				shiftreg	<= '1' & shiftreg(shiftreg'left downto 1);
 				if bit_count = 1 then
 					busy	<= '0';
 				end if;