| Build target 'Target 1' assembling STARTUP.A51...
 assembling lamp5.ASM...
 linking...
 *** WARNING L5: CODE SPACE MEMORY OVERLAP
 FROM: 0000H
 TO: 0002H
 *** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
 SYMBOL: ?C_START
 MODULE: .\STARTUP.obj (?C_STARTUP)
 *** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL
 SYMBOL: ?C_START
 MODULE: .\STARTUP.obj (?C_STARTUP)
 ADDRESS: 008DH
 Program Size: data=9.0 xdata=0 code=146
 "lamp5" - 0 Error(s), 3 Warning(s).
 请问是什么原因?
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