Professional Graphics Controller

==Specifications==

==Specifications==

Introduced in September 1984,{{cite web |date= 10 September 1984|title=Announcement Letter Number 184-112 dated September 10, 1984: IBM 5175 PERSONAL COMPUTER PROFESSIONAL GRAPHICS DISPLAY AND PERSONAL COMPUTER PROFESSIONAL GRAPHICS |url=http://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/2/897/ENUS184-112/index.html&lang=en&request_locale=en |accessdate=2016-08-08 |website=IBM United States}} the Professional Graphics Controller offered a maximum resolution of 640 × 480 with 256 colors on an [[analog signal|analog]] [[RGB color model|RGB]] [[Video monitor|monitor]], at a [[refresh rate]] of 60 hertz—a higher resolution and color depth than [[Color Graphics Adapter|CGA]] and [[Enhanced Graphics Adapter|EGA]] supported. This mode is not [[BIOS]]-supported. It was intended for the [[computer-aided design]] market and included 320 KB of display [[Random-access memory|RAM]] and an on-board [[Intel 8088]] microprocessor. The 8088 ran software routines such as "draw polygon" and "fill area" from an on-board 64 KB [[Read-only memory|ROM]] so that the host [[Central processing unit|CPU]] didn't need to load and run these routines itself. While never widespread in consumer-class personal computers, its {{USD|2995|1984|round=-2}} list price, plus $1,295 display, compared favorably to US$50,000 dedicated CAD [[workstation]]s of the time (even when the $4,995 price of a [[IBM Personal Computer XT|PC XT]] Model 87{{Cite web |date=1983-06-07 |title=Announcement Letter Number 183-082 dated June 7, 1983: IBM PERSONAL COMPUTER AND IBM PERSONAL COMPUTER XT ENHANCED WITH ANNOUNCEMENT OF MATH CO-PROCESSOR |url=https://www.ibm.com/common/ssi/cgi-bin/ssialias?appname=skmwww&htmlfid=897/ENUS183-082&infotype=AN&mhq=IBM%20Personal%20Computer%20XT%20announcement&mhsrc=ibmsearch_a&subtype=CA |access-date=2023-04-06 |website=IBM United States |language=en-US}} was included).

Introduced in September 1984,{{cite web |date= 10 September 1984|title=Announcement Letter Number 184-112 dated September 10, 1984: IBM 5175 PERSONAL COMPUTER PROFESSIONAL GRAPHICS DISPLAY AND PERSONAL COMPUTER PROFESSIONAL GRAPHICS |url=http://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/2/897/ENUS184-112/index.html&lang=en&request_locale=en |accessdate=2016-08-08 |website=IBM United States}} the Professional Graphics Controller offered a maximum resolution of {{resx|640|480}} with 256 colors on an [[analog signal|analog]] [[RGB color model|RGB]] [[Video monitor|monitor]], at a [[refresh rate]] of 60 hertz—a higher resolution and color depth than [[Color Graphics Adapter|CGA]] and [[Enhanced Graphics Adapter|EGA]] supported. This mode is not [[BIOS]]-supported. It was intended for the [[computer-aided design]] market and included 320 KB of display [[Random-access memory|RAM]] and an on-board [[Intel 8088]] microprocessor. The 8088 ran software routines for 2D and 3D graphics such as "draw polygon" and "fill area" from an on-board 64 KB [[Read-only memory|ROM]] so that the host [[Central processing unit|CPU]] didn't need to load and run these routines itself. While never widespread in consumer-class personal computers, its {{USD|2995|1984|round=-2}} list price, plus $1,295 display, compared favorably to US$50,000 dedicated CAD [[workstation]]s of the time (even when the $4,995 price of a [[IBM Personal Computer XT|PC XT]] Model 87{{Cite web |date=1983-06-07 |title=Announcement Letter Number 183-082 dated June 7, 1983: IBM PERSONAL COMPUTER AND IBM PERSONAL COMPUTER XT ENHANCED WITH ANNOUNCEMENT OF MATH CO-PROCESSOR |url=https://www.ibm.com/common/ssi/cgi-bin/ssialias?appname=skmwww&htmlfid=897/ENUS183-082&infotype=AN&mhq=IBM%20Personal%20Computer%20XT%20announcement&mhsrc=ibmsearch_a&subtype=CA |access-date=2023-04-06 |website=IBM United States |language=en-US}} was included).

==Development==

==Development==