翻译期间的约束错误

大家好，
这是关于ps2鼠标协议的一个例子。
最高实体：
entity mouse_led是
港口 （
clk，reset：in std_logic;
ps2d，ps2c：inout std_logic;
led：out std_logic_vector（7 downto 0）
）;
结束mouse_led;
和我的constratints：
顶部的限制
#CLK声明并连接到C9 50 MHz时钟
NET“clk”PERIOD = 20.0ns HIGH 50％;
NET“clk”LOC =“C9”|
IOSTANDARD = LVTTL;
NET“重置”LOC =“K17”|
IOSTANDARD = LVTTL |
拉下;
＃
＃PS2 PINS
NET“ps2c”LOC“G14”|
IOSTANDARD = LVCMOS33 |
SLEW = SLOW |
DRIVE = 8;
NET“ps2d”LOC“G13”|
IOSTANDARD = LVCMOS33 |
SLEW = SLOW |
DRIVE = 8;
##################################### OUTPUTS ############
#################
#LED引脚
＃
NET“led”LOC =“F9”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“E9”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“D11”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“C11”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“F11”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“E11”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“E12”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
NET“led”LOC =“F12”|
IOSTANDARD = LVTTL |
SLEW = SLOW |
DRIVE = 8;
＃
＃文件结束
＃
翻译失败：
警告：ConstraintSystem：176  - 在文件中：contraints.ucf（8）：语法错误。
确保先前的约束规范以';'终止。
警告：ConstraintSystem：176  - 在文件中：contraints.ucf（9）：语法错误。
确保先前的约束规范以';'终止。
为什么？
我不明白。
针脚不在。
这是一个问题吗？
这是我第一次尝试输入引脚。



以下为原文

Hi all,

this is an example on ps2 mouse protocol.

The top entity :

entity mouse_led is   port (      clk, reset: in  std_logic;      ps2d, ps2c: inout std_logic;      led: out std_logic_vector(7 downto 0)   );end mouse_led;
and my constratints:

Constraints for top# CLK declared and connected to C9 50 MHz clockNET "clk" PERIOD = 20.0ns HIGH 50%;NET "clk" LOC = "C9" | IOSTANDARD = LVTTL;NET "reset" LOC = "K17" | IOSTANDARD = LVTTL | PULLDOWN;## PS2 PINSNET "ps2c" LOC "G14" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8;NET "ps2d" LOC "G13" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8;##################################### OUTPUTS ############################## LED pins #NET "led<7>" LOC = "F9" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<6>" LOC = "E9" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<5>" LOC = "D11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<4>" LOC = "C11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<3>" LOC = "F11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<2>" LOC = "E11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<1>" LOC = "E12" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;NET "led<0>" LOC = "F12" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;## End of File#

The translation fail for  :

WARNING:ConstraintSystem:176 - In file: contraints.ucf(8): Syntax error.  Ensure that the previous constraint specification was terminated with ';'.
WARNING:ConstraintSystem:176 - In file: contraints.ucf(9): Syntax error.  Ensure that the previous constraint specification was terminated with ';'.

Why ? I don't understand it. The pins are inout. Is this a problem ? This is my first attempt on input pins.