AVR-Chat

My project now is to make a gate access. My main problem 
now is that my program (i am using 8051) looks very OK in 
simulation, BUT in reality the program execution seems to 
show occasionally unpredictable results. My project 
involves relays and motors. I am using SDCC as the 
compiler.

The biggest question is: is the problem caused by HARDWARE 
or SOFTWARE? i look at my software and it seems ok. i look 
at the hardware schematics and it also looks OK. In the 
situation like what i am in now, which should i check 
first? Hardware? or Software?

If i must check hardware, why does the error only happens 
occasionally (getting more often lately) and not ALWAYS?

Sorry if i dont give you much information about my 
project. I am really upset now :(

Regards,
Irfan.
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Netkuis Instan untuk wilayah Bandung (kode area 022) - SD,SMP,SMA
Berhadiah total puluhan juta rupiah... periode I dimulai 1 April 2004
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