51编译通不过，求原因

1. compiling caiping.c...
   
2. linking...
   
3. *** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
   
4.     SEGMENT: ?PR?_H_LINE?CAIPING
   
5. *** ERROR L107: ADDRESS SPACE OVERFLOW
   
6.     SPACE:   DATA   
   
7.     SEGMENT: _DATA_GROUP_
   
8.     LENGTH:  0034H
   
9. Program Size: data=127.4 xdata=0 code=6507
   
10. Target not created

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我选的是AT89C52，按理来说128B的RAM是够得啊，为什么编译不了。直到我把其中一个数组的长度从9改为5，变成如下才能通过编译：

1. Build target 'Target 1'
   
2. compiling caiping.c...
   
3. linking...
   
4. *** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
   
5.     SEGMENT: ?PR?_H_LINE?CAIPING
   
6. Program Size: data=111.4 xdata=0 code=6491
   
7. creating hex file from "caiping"...
   
8. "caiping" - 0 Error(s), 1 Warning(s).

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数组改为长度6也是不行的：

1. Build target 'Target 1'
   
2. compiling caiping.c...
   
3. linking...
   
4. *** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
   
5.     SEGMENT: ?PR?_H_LINE?CAIPING
   
6. *** ERROR L107: ADDRESS SPACE OVERFLOW
   
7.     SPACE:   DATA   
   
8.     SEGMENT: ?DT?CAIPING
   
9.     LENGTH:  002CH
   
10. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
11.     SYMBOL:  COUNT_TIME0
    
12.     SEGMENT: ?DT?CAIPING
    
13. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
14.     SYMBOL:  SNAKE_W
    
15.     SEGMENT: ?DT?CAIPING
    
16. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
17.     SYMBOL:  PY
    
18.     SEGMENT: ?DT?CAIPING
    
19. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
20.     SYMBOL:  PX
    
21.     SEGMENT: ?DT?CAIPING
    
22. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
23.     SYMBOL:  I
    
24.     SEGMENT: ?DT?CAIPING
    
25. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
26.     SYMBOL:  PX_BUF
    
27.     SEGMENT: ?DT?CAIPING
    
28. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
29.     SYMBOL:  SNAKE_L
    
30.     SEGMENT: ?DT?CAIPING
    
31. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
32.     SYMBOL:  KEYNUM2
    
33.     SEGMENT: ?DT?CAIPING
    
34. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
35.     SYMBOL:  NRAND2
    
36.     SEGMENT: ?DT?CAIPING
    
37. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
38.     SYMBOL:  NRAND1
    
39.     SEGMENT: ?DT?CAIPING
    
40. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
41.     SYMBOL:  SCORE
    
42.     SEGMENT: ?DT?CAIPING
    
43. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
44.     SYMBOL:  KEYNUM
    
45.     SEGMENT: ?DT?CAIPING
    
46. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
47.     SYMBOL:  STAGE
    
48.     SEGMENT: ?DT?CAIPING
    
49. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
50.     SYMBOL:  SHIWU_Y
    
51.     SEGMENT: ?DT?CAIPING
    
52. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
53.     SYMBOL:  SHIWU_X
    
54.     SEGMENT: ?DT?CAIPING
    
55. *** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
    
56.     SYMBOL:  PY_BUF
    
57.     SEGMENT: ?DT?CAIPING
    
58. Program Size: data=115.4 xdata=0 code=6495
    
59. Target not created

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求教原因

程序了，没程序给你怎么看

程序里写的有些函数没有被调用到！