hmm, there is strange thing about my previous post:
Visual C++ accepts this macro but Keil does not. It claims about

<<error C193: '*': bad operand type>>

.
I have tested some more and found that Keil finds the error at next simple line:

a = (((01111111/1000000)&1) * 64);

Could somebody explain, what is wrong?

Thanks,
Oleg