New C51 compiler v.9.60 issue; processor is AT89C8051AC3.

With old compiler V.7.20 the code runs, with the new compiler the processor does not.

What I noticed in the new code generated is the following

0012 C3                  CLR     C

0013 E500      E     MOV     A,time_base
0015 9406              SUBB    A,#06H
0017 7480              MOV     A,#080H
0019 9480              SUBB    A,#080H
001B 501A              JNC     ?C0006

replaces

0012 E500     E     MOV     A,time_base
0014 C3                 CLR     C
0015 9406             SUBB    A,#06H
0017 501A             JNC     ?C0006
There are a few other differences but this occurs in many places, and the new code is 1K longer than the old code.

If you need additional information, let me know.

Thanks,

Victor