Re: numeric value(s) from alpha

[Ken Sims <mr2087@xxxxxxxxx>]

Hi Booth -

> My need is to find each of these block's numerical value.   I am finding
> this extremely confusing for me as the field can vary from 5 to 11
> characters long.

I would use a finite state machine for parsing the data.  That can validate 
as well as parse.

> After that, I need to convert the number to its hex equivalent.

Do you want to convert it to the actual hex value or to the character 
equivalent of the value?  I.e. would 000 convert to x'00' or x'F0F0'?

If the actual hex value, you can use eight IFs with bit operations to do it.

If the character equivalent, the easiest way would be to have a 
compile-time array with 256 elements loaded with the character 
equivalents.  The numeric value + 1 would point to the proper element.

Ken
http://www.ke9nr.net/
Opinions expressed are my own and do not necessarily represent the views of 
my employer or anyone in their right mind.