Professional Graphics Controller
- Professional Graphics Controller
Professional Graphics Controller was an IBM XT graphics card manufactured by IBM. It was very advanced, providing both 2D and 3D graphics accelerator for CAD applications. It consisted of three interconnected PCBs, and in fact contained its own processor and memory.
Introduced in 1984, and obsoleted by 1987, the Professional Graphics Controller (often called "Professional Graphics Adapter" and sometimes "Professional Graphics Array") offered slightly higher resolution and color depth than the EGA, up to 640 x 480 and 256 colors at 60 frames/second. It was intended for the computer-aided design market and included 320 kB of display RAM and an on-board microprocessor, which gave it the ability to do 3D rotation and clipping of images. While never widespread in consumer-class personal computers, its US$4,290 list price compared favorably to US$50,000 dedicated CAD workstations of the time.
The display adapter was composed of three physical circuit boards (one with the on-board microprocessor, firmware ROMs and video output connector, and the other two mostly providing RAM) and occupied two adjacent expansion slots on the XT or AT motherboard; the third card was located in between the two slots.
In addition to its native 640 x 480 mode, the PGC optionally supported the documented text and graphics modes of the Color Graphics Adapter.
External links
* [http://www.seasip.info/VintagePC/pgc.html Pictures and programming information]
References
*Mueller, Scott (1992) "Upgrading and Repairing PCs, Second Edition", Que Books, ISBN 0-88022-856-3 - which says 3 slots and "adapter"
* [http://domino.research.ibm.com/tchjr/journalindex.nsf/0/6829ccaf443f3a6c85256bfa00685b97?OpenDocument A Professional Graphics Controller] by K. A. Duke and W. A. Wall, IBM Systems Journal
* [http://incolor.inebraska.com/bill_r/ibm_pga_graphics_adapter.htm Professional Graphics Adapter pictures] which says 2 slots
Wikimedia Foundation.
2010.
Look at other dictionaries:
Professional Graphics Controller — PGC card Professional Graphics Controller это графическая карта, производимая IBM для компьютеров IBM PC/XT. Она была весьма технически совершенной для своего времени, имея как 2D, так и 3D графические ак … Википедия
Professional Graphics Controller — PGC Karte Der Professional Graphics Controller (PGC) war eine von IBM für den PC XT und PC AT hergestellte Grafikkarte. Im Vergleich zu anderen zeitgenössischen Grafiklösungen war der PGC sehr fortschrittlich. Er bot Hardwarebeschleunigung für 2D … Deutsch Wikipedia
Graphics processing unit — GPU redirects here. For other uses, see GPU (disambiguation). GeForce 6600GT (NV43) GPU A graphics processing unit or GPU (also occasionally called visual processing unit or VPU) is a specialized circuit designed to rapidly manipulate and alter… … Wikipedia
Color Graphics Adapter — The 640×200 2 color mode with its default foreground color Arachne Internet suite. The Color Graphics Adapter (CGA), originally also called the Color/Graphics Adapter or IBM Color/Graphics Monitor Adapter,[1] introduced in 1981, was IBM s first… … Wikipedia
Enhanced Graphics Adapter — The Enhanced Graphics Adapter (EGA) is the IBM PC computer display standard specification located between CGA and VGA in terms of graphics performance (that is, color and space resolution). Introduced in 1984 by IBM for its new PC AT, EGA… … Wikipedia
Accelerated Graphics Port — Infobox Computer Hardware Bus name = AGP fullname = Accelerated Graphics Port caption = An AGP slot (having maroon color) and two PCI slots invent date = 1997 invent name = Intel super name = PCI Express super date = 2004 width = 32 style = p… … Wikipedia
Silicon Graphics — Infobox Company company name = SGI company company type = Public (NASDAQ|SGIC) company slogan = Innovation for Results foundation = California (1982) location city = Sunnyvale, California location country = USA key people = Robert Bo Ewald, CEO… … Wikipedia
PGA — is an initialism that can stand for: Chemistry * 3 phosphoglycerate, another name for glycerate 3 phosphate (often used when referring to the Calvin cycle) * Poly glutamic acid, a polymer of the glutamic acid (one of standard amino acids) *… … Wikipedia
EGA — Видеокарта EGA EGA (англ. Enhanced Graphics Adapter Усовершенствованный графический адаптер) стандарт мониторов и видеоадаптеров для IBM P … Википедия
Computer display standard — Computer display standards are often a combination of aspect ratio, display resolution, color depth, and refresh rate. This article describes the different display standards for computer displays. Contents 1 History 2 Standards 3 Display… … Wikipedia
