>
>The best source of info I have for doing this is the original Motorola 6800
>Assembly Language Manual (I forget its exact name) which has a section on
>barcodes and the theory of scanning a UPC with a wand. As you work through the
>book they build a complete POS terminal with example machine code for printer,
>keyboard, display and barcode. Its one of those "dont you dare throw it out"
>books.

I would VERY much like to have a copy of that, having designed POS
terminals for a good number of years.


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