>> I've heard about interesting trick shifting bits individually
>> into different positions by multiplying on constant on micros
>> with hardware multiplication unit.
>
> Pretty simple, actually.  A left shift (towards the MSB) is the
> same as a multiply by 2.  Each subsequent by 2 is a shift.

This is obvious, but I think Dmitriy had something else in mind: "shifting 
bits individually into different positions." The keyword is "individually", 
I don't see a reason to use hardware multiply if you can use shift 
left/shift right.

Best regards,

Vitaliy 

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