encodings

most common code pages of the DOS era:

https://github.com/danvk/gwbasic-decoder

• cp437: The code page of the original IBM PC
• cp850: Latin-1 (Some symbols and Greek characters in the cp437 got replaced with more latin letters.)
• cp1252: Windows 1.0 -> Windows 98
• iso-8859-1: Western European encoding, early web standard