请帮我看下下面的代码错在什么地方，谢谢！

freeunix

我最近在看中国电力出版社出版的FPGA嵌入式系统设计与开发指南这本书，下面的代码是本书的第第一章的第三段代码，我使用QII 11.0WEB版本无论如何无法正确编译，总是提示10559错误，请各位高手帮我看下问题所在，谢谢！


7 M2 {- K, W# m0 h% n, dlibrary ieee;
use ieee.std_logic_1164.all;
( q( D$ _# }7 N; s% {9 R4 Puse ieee.std_logic_unsigned.all;
( j; L7 B  X+ }# {# [entity counter8bit is
; b! C4 C) |% m  v8 L' \  port(int ,reset,enable: in std_logic;count_out: out std_logic_vector(7 to 0));
  end counter8bit;
( R( p! Q3 E- q4 E3 g    architecture counter of counter8bit is
         signal count_in: std_logic_vector( 0 to 7);
         begin
          process(input,reset)
# h3 _  ^( R  F' O7 a* B& D  l             begin
                    wait until rising_edge(input);
                          if reset='1' then
( v3 v; ]( d* Y0 M& M8 Q                           count_in<=(others =>'0');
' x  P+ M2 J  q' I' e! E! u0 Q                                elsif enable= '1'  then
! r# _' N) q+ J. Y1 }9 t" X                                  if (count_in="11111110")  then
                                    count_in<="00000000";
# l  F) G" G" s) A                                  else
                                         count_in<=count_in+1;
                                  end if;
                         end if;
8 N2 m' u' o" z                         end process;
$ P- `! A- c: A                         end counter;
' H; b& G1 c5 ]0 z/ m                                         


+ o6 Q; h- O9 DlInfo: *******************************************************************
Info: Running Quartus II Create Symbol File
% {' l1 ?2 O+ q5 ~        Info: Version 11.0 Build 157 04/27/2011 SJ Web Edition
" C# y# V! @* @3 v+ K        Info: Processing started: Wed Jul 24 14:43:41 2013
        Info: Version 11.0 Build 157 04/27/2011 SJ Web Edition
        Info: Processing started: Wed Jul 24 14:43:41 2013
Info: Command: quartus_map --read_settings_files=on --write_settings_files=off penlvji -c penlvji --generate_
Error (10482): VHDL error at counter8bit.vhd(12): object "input" is used but not declared
# ^! C, ]# {& W4 S8 nError (10559): VHDL Subprogram Call error at counter8bit.vhd(12): actual for formal parameter "s" must be a "signal"
Error (10482): VHDL error at counter8bit.vhd(10): object "input" is used but not declared
Error: Quartus II Create Symbol File was unsuccessful. 3 errors, 0 warnings
       

gusumurong

这个错误信息给的还不够明显？

freeunix

但是我看了line12,没找到错误啊

gusumurong

你的输入接口只有int ,reset,enable。"input"信号在哪里呢？

zgq800712

object "input" is used but not declared
你先把这句话翻译了再说。