On Fri, 27 Mar 1998 13:27:34 -0500, you wrote:

>On Fri, 27 Mar 1998 17:52:18 GMT TORRENS SR <r139a@SMSERVER2.ULST.AC.UK>
>writes:
>>I need to find out whether the difference between two 3 digit BCD
>>numbers is less that 30. My project involves positioning using a GPS
>>reciever. This problem involves basic subtraction, but I've tried it
>>and it's not that basic. Would anyone have a bit of code just lying
>>about
>>there somewhere or could you point me in some direction which might
>>help. Cheers, Ross.
>
>I'd convert the numbers to binary first.  Then it is much simpler to
>process them.  The conversion won't take very long either so it may be
>faster than trying to optimize BCD processing.
Ever wondered what the digit-carry flag is for?
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