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NTSC GTIA chip manufactured by Okidata
Color Television Interface Adaptor[1] (CTIA) and its successor Graphic Television Interface Adaptor[1] (GTIA) are custom chips used in the Atari 8-bit family of computers and in the Atari 5200 home video game console. In these systems, a CTIA or GTIA chip works together with ANTIC to produce the video display. ANTIC generates the playfield graphics (text and bitmap) while CTIA/GTIA provides the color for the playfield and adds overlay objects known as player/missile graphics (sprites). Under the direction of Jay Miner, the CTIA/GTIA chips were designed by George McLeod with technical assistance of Steve Smith.[2][3][4]
Color Television Interface Adaptor and Graphic Television Interface Adaptor are names of the chips as stated in the Atari field service manual.[1] Various publications named the chips differently, sometimes using the alternative spelling Adapter[5][6] or Graphics,[3] or claiming that the "C" in "CTIA" stands for Colleen/Candy[5] and "G" in "GTIA" is for George.[3][5][6][7]
^ abcAtari Home Computer Field Service Manual - 400/800(PDF). Atari, Inc. pp. 1–10. Retrieved 2010-09-10.
^Neubauer, Doug (2009-06-20). "The Atari Years, by Doug Neubauer. Star Raiders, Solaris and Pokey". DougNeubauer.com.
^US patent 4296476, Mayer, Steven T.; Miner, Jay G.; Neubauer, Douglas G.; Decuir, Joseph C., "Data processing system with programmable graphics generator", issued 1
981-10-20, assigned to Atari, Inc.
^ abcPatchett, Craig; Sherer, Robin (1984). "Special Chips and ROM". The Master Memory Map for the Atari. Reston, Va.: Reston Publishing Company. ISBN 0-8359-4242-2. Retrieved 2011-01-26.
^ abMace, Scott (1982-03-15). "Atari quietly switches to a 16-color graphics chip". InfoWorld. 4 (10). Palo Alto, CA: Popular Computing: 3–4. ISSN 0199-6649. Retrieved 2011-02-01.
^Chamberlain, Craig (July 1982). "Atari Video Graphics And The New GTIA". Compute! (26): 124. ISSN 0194-357X. Retrieved 2011-01-24.
Adaptor (CTIA) and its successor Graphic Television Interface Adaptor (GTIA) are custom chips used in the Atari 8-bit family of computers and in the Atari...
ANTIC, CTIAandGTIA Capcom's CPS-A and CPS-B Commodore's OCS MOS Technology's VIC and VIC-II Hudson Soft's Cynthia and HuC6270 NEC's μPD7220 and μPD72120...
graphics, then delivers a data stream to the companion CTIA or GTIA chip which adds color and overlays sprites (referred to as "Player/Missile graphics"...
the design of the TIA for the Atari 400/800 computers with the ANTIC andCTIA/GTIA chips. Jay Miner later led the design of the custom chips for the Amiga...
Atari, Inc. 1982. Michael Current, "What are the SALLY, ANTIC, CTIA/GTIA, POKEY, and FREDDIE chips?", Atari 8-Bit Computers: Frequently Asked Questions...
18 August 2018. "FAQ 400 800 XL XE : What are SALLY, ANTIC, CTIA/GTIA/FGTIA, POKEY, and FREDDIE?". Archived from the original on 19 July 2020. named...
improved Graphic Television Interface Adaptor (GTIA), users found that such programs displayed incorrect colors and required an updated version of the software...
July 14, 2015. Retrieved July 14, 2015. "What are the 6502, ANTIC, CTIA/GTIA, POKEY, and FREDDIE chips?". Atari8.com. Archived from the original on 2016-03-05...
the home user. By simplifying the machines, and making use of household items such as television sets and cassette recorders instead of dedicated computer...
INTERNAL DATA BUS (DB) "FAQ 400 800 XL XE: What are SALLY, ANTIC, CTIA/GTIA/FGTIA, POKEY, and FREDDIE?". Archived from the original on 19 July 2020. named...
create their own character sets with relative ease, or built out of the CTIA/GTIA's P/M Graphics as had to be done with the TIA of the Atari 2600. MSX wasn't...
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