TheGEM character set is thecharacter set ofDigital Research's graphical user interfaceGEM onIntel platforms. It is based oncode page 437, the original character set of theIBM PC.

Like codepage 437, it aligns withASCII codepoints 32–126, and has additional codepoints including letters withdiacritics and other symbols. It differs from code page 437 in using otherdingbats at code points 0–31, in exchanging thebox-drawing characters 176–223 for international characters and other symbols, and exchanging code point 236 with the symbol for line integral. However, GEM is more similar tocode page 865, because the codepoints of Ø and ø match the codepoints in that codepage.

A slight adaptation forVentura Publisher is the similarVentura International character set, it has code points 0-31, 127, and 218-255 empty, and has swapped ¢ and ø and has also swapped ¥ and Ø (to match code page 437 more).

The GEM-derived file managerViewMAX, which shipped with some versions ofDR DOS as aDOSSHELL replacement, does not use the GEM character set, but loads its display fonts from DOS .CPI files^{[1][2][3][4][5][6]} depending on the system's currentcode page.

The following table shows the GEM character set. Each character is shown with a potentialUnicode equivalent, although some codes do not have a unique Unicode equivalent; the correct choice may depend upon context.

• Atari ST character set
• Western Latin character sets (computing)
• Alt codes
• Bitstream International Character Set
• Ventura International Character Set

• Character sets
• Computer-related introductions in 1985

• Articles with short description
• Short description is different from Wikidata