vhdl 图像移动

我用下面代码用VGA显示，用按键移动我定义的9*9的正方形，正方形和外面颜色不一样，用xilinx ISE运行，结果在implement Design的Map部分报错 MapLib:978 and MapLib:978979 error.试了xilinx上的解决方法，结果完全没用。 请问哪位高人知道怎么解决？在下万分感谢！

ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<0>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<1>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<2>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<3>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<4>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<5>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<6>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<7>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<8>" (output
ERROR:MapLib:979 - LUT2 symbol "Mcompar_green_signal_cmp_ge0000_lut<9>" (output

SIGNAL a1,a2 : STD_LOGIC_VECTOR(9 DOWNTO 0); ---a1 is y of the graph
---a2 is x of the graph
---------------graph controlling part-------------------------------------------------这一部分在进程外
a1 <= a1+1 when (Button_1<='1') else ---in range
a1-1 when (Button_2<='1') else ---in range
"0000000000" when (a1 < 0) else --out of range
"0111010110" when (a1 > 470); --out of range
a2 <= a2+1 when (Button_3<='1') else ---in range
a2-1 when (Button_4<='1') else ---in range
"0000000000" when (a2 < 0) else --out of range
"1001110110" when (a2 > 630); --out of range

--------------graph display part----------------------------------------------------这一部分在进程内

IF (v_cnt >= a1) AND (v_cnt <= a1+9) AND (h_cnt >= a2) AND (h_cnt <= a2+9) THEN ------in graph
red_signal <= '1';
green_signal <= '1';
blue_signal <= '0';

ELSE ------out of graph
red_signal <= '0';
green_signal <= '0';
blue_signal <= '1';
END IF;

这个我怎么看都像火星文，你这个要在网上问出来啊，你就厉害了，我劝你还是找个会电脑的人给你解答吧。望采纳。

没有用过xilinx ISE 我用的是Quartus II 7.2 (32-Bit) 不知道是什么问题 兄弟如果知道了 分享一下