HP-75D Barcode

[Martin Hepperle]

Here is an update to this thread: in the attached ZIP archive you find programs and documents to generate barcode images for HP-75 BASIC programs. These can be printed on paper and later read by the HP-75D.

If you do not have a MS-DOS system/emulator like DosBOX installed, the way via Postscript output and conversion e.g. with Acrobat or Ghostscript tools is probably the most convenient.

The HP-75 requires a special program to read and translate these bar codes into a BASIC program. The reason for this is that the standard 3of9 barcode format does not cover the complete 256 character range so that an escape mechanism is required to translate all codes.
A second constraint is the restricted maximum line length (which is not too bad in terms of human readable programs without long lines with multiple statements).

Martin