DEC Special Graphics

A modified DEC Special Graphics set (with additional fill blocks and arrows, and without the control pictures) accessed in a Linux terminal using Shift Out
Alias(es)IBM-1090
Based onASCII

DEC Special Graphics[1] is a 7-bit character set developed by Digital Equipment Corporation. This was used very often to draw boxes on the VT100 video terminal and the many emulators, and used by bulletin board software. The designation escape sequence ESC ( 0 (hexadecimal 1B 28 30) switched the codes for lower-case ASCII letters to draw this set, and the sequence ESC ( B (hexadecimal 1B 28 42) switched back.[2] IBM calls it Code page 1090.[3]

  1. ^ Cite error: The named reference vt220 was invoked but never defined (see the help page).
  2. ^ Mascheck, Sven; Le Breton, Stefan; Hamilton, Richard L. "About the 'alternate linedrawing character set'". ~sven_mascheck/.
  3. ^ IBM. Code Page 01090 (PDF). Archived from the original (PDF) on 2015-07-08. Retrieved 2020-01-08.