Ax51 attempt to define an already defined label

I'm trying to use the ax51 standard macro assembler to find a way to determine if a symbol or label is already defined. Something like the following pseudo code: if label "table_abc" is defined,...
Ax51 attempt to define an already defined label

I'm trying to use the ax51 standard macro assembler to find a way to determine if a symbol or label is already defined. Something like the following pseudo code: if label "table_abc" is defined,...
error A10: ATTEMPT TO DEFINE AN ALREADY DEFINED SYMBOL

Build target 'Target 1' assembling STARTUP.ASM... 89C51RE2.H(17): error A10: ATTEMPT TO DEFINE AN ALREADY DEFINED SYMBOL This is line 17 in the header file /* BYTE Register */ Sfr (P0 , 0x80...
error A10:ATTEMPT TO DEFINE AN ALREADY DEFINED SYSMBOL

Hi All, I have the following code for a AT89s8252. When I compile it it gives more than 10 errors... #include <REG52.h> org 0000h mov a,#0ffh end
error A10: ATTEMPT TO DEFINE AN ALREADY DEFINED SYMBOL

Build target 'Target 1' assembling STARTUP.ASM... 89C51RE2.H(17): error A10: ATTEMPT TO DEFINE AN ALREADY DEFINED SYMBOL This is line 17 in the header file /* BYTE Register */ Sfr (P0 , 0x80...