User:Homebrew Devices/sandbox

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The M&R Enterprises Sup'R'Terminal was the first Apple II peripheral card to enable the display of 80 columns of text on a connected monitor.[1][2] The Sup'R'Terminal is compatible with slot 03 in the Apple II and II+. As the first card making 80 columns of upper and lower case text displayable on these machines, it is the only card supported by the II+ version of Apple Writer and thus the only way to match the displayed text to the printed text with this popular early personal computer word processor.[3] The Apple II and II+ had until this time only displayed 40 columns of text per line, half the characters included per line on a printed page. This transition to 80-column display was an early step in bringing the WYSIWYG concept to the Apple ecosystem.

A variety of clone add-on cards with similar functionality were released in the wake of the Sup'R'Terminal, including the Videx Videoterm. Apple's inclusion of their own first party clone of the Sup'R'Terminal, the Apple 80-Column Text Card, with the Apple IIe nearly eliminated the third party market 80-column card market.[1] The Sup'R'Terminal was designed by John R. Wilbur and the firmware was written by Andy Hertzfeld in 1980. [4][5]

See also[edit]

References[edit]

  1. ^ a b "13 - Apple II Peripherals". Apple II History. Retrieved January 7, 2014. 
  2. ^ "Robot War". The Digital Antiquarian. January 30, 2012. Retrieved January 7, 2014. 
  3. ^ "A2 Peripheral Cards". AppleII.info. Retrieved January 7, 2014. 
  4. ^ M&R Enterprises, Sup'R'Terminal Manual, page 47, 1980.
  5. ^ "Video Compensation Subcircuit," US Patent 4314245, March 10th, 1980.

Category:Apple II peripherals Category:Video cards