请问大家,我在用KEIL,汇编编写程序出现警告。
ORG 0000H
LJMP MAIN
ORG 0080H
MAIN:MOV P1,#0
END
上面是我的源程序。
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? |