> I want to calculate:
>
> =A0 =A0(ticks * <microsecondsPerTick>) / 1000
>
> to return the number of milliseconds elapsed based on a
> count maintained by a timer ISR. =A0microsecondsPerTick
> is a nice constant number like 1024 or 2048, so the
> multiplication becomes a shift

So, what you need is just to divide by 1000 after the shifting.
Why not convert it to decimal, discard last 3 digits, and then convert
it back to binary?


> The code is not particularly time critical

-- =

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