Python codecs for PETSCII encodings
The cbmcodecs package provides a number of encodings for handling text from Commodore 8-bit systems. Much of the credit for this package must go to Linus Walleij of Triad, as these codecs were built from his PETSCII to Unicode mappings which can be found at http://www.df.lth.se/~triad/krad/recode/petscii.html The screencodes codec was created by hand later and borrows from them.
Currently there are four codecs defined for variations of the PETSCII encoding:
- The English version of the Commodore 64 mixed-case character set
- The English version of the Commodore 64 upper-case/graphics character set
- The English version of the VIC-20 mixed-case character set
- The English version of the VIC-20 upper-case/graphics character set
There are two codecs defined to handle the Screencode (POKE) encoding:
- Mixed-case mapping to screencodes (POKE) used by the Commodore 64 and Vic20
- Upper-case/graphics mapping to screencodes (POKE) used by the Commodore 64 and Vic20
Simply import the cbmcodecs package and you will then be able to use them as with any of the encodings from the standard library:
import cbmcodecs with open('file.seq', encoding='petscii-c64en-lc') as f: for line in f: print(line)
Python Version Note
Currently only Python 3 is supported (tested on 3.5+). May or may not work on older versions.
As with the original PETSCII to Unicode mapping files, the cbmcodecs package is Licensed under the GNU GPL Version 2, see the LICENSE.txt file for the full text.
Unicode symbols used
Aside from the regular alphanumerics and symbols, the unicode mapping uses the following unicode block drawing and other symbols to mimic a bunch of PETSCII characters:
£ π ✓ ← ↑ ─ │ ┌ ┐ └ ┘ ├ ┤ ┬ ┴ ┼ ╭ ╮ ╯ ╰ ╱ ╲ ╳ ▁ ▂ ▃ ▄ ▌ ▍ ▎ ▏ ▒ ▔ ▕ ▖ ▗ ▘ ▚ ▝ ○ ● ◤ ◥ ♠ ♣ ♥ ♦
Linus Walleij - Original C64 and VIC-20 mappings Dan Johnson - Translation of C64 & VIC-20 mappings to python codecs Irmen de Jong - Screencode mappings, bug fixes and unit tests.
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