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Topic: Monochrome Display Adapter MDA

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Monochrome Display Adapter

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graphics adapter

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	Green screen - Wikipedia, the free encyclopedia
		Green screen was the common name for a monochrome CRT computer display using a green "P1" phosphor screen.
		The most famous green screen product is arguably the original IBM PC monochrome display, designated the IBM 5151 (the PC itself had the model number 5150).
		From the outset, the 5151 was designed to work with the PC's Monochrome Display Adapter (MDA) text-only graphics card, but soon the third-party Hercules Graphics Card became a popular companion to the 5151 screen because of the Hercules' high-resolution bitmapped monochrome graphics capability, much used for business presentation graphics generated from e.g.
	en.wikipedia.org /wiki/Green_screen (269 words)

	display graphics (Site not responding. Last check: 2007-10-20)
		Typically these are:0xB0000 for monochrome text mode0xB8000 for colour text mode and CGA-compatible graphics modes0xA0000 for EGA/VGA graphics modesDue to the use of different address mappings for different modes it is possible to have an Monochrome Display Adapter and a colour adapter such as the VGA, EGA, or CGA installed in one machine.
		Monochrome displays can show only levels of a single colour.jpgA computer display, monitor or screen is a computer peripheral device capable of showing still or moving images generated by a computer and processed by a graphics card.
		At the beginning of the 1980s, this was used, for example, to display Lotus 1-2-3 spreadsheets in high-resolution text on a MDA display and associated graphics on a low-resolution CGA display.
	www.document-sugery.co.uk /display-graphics.aspx (2772 words)

	Color Graphics Adapter (Site not responding. Last check: 2007-10-20)
		The Color Graphics Adapter (CGA), introduced in 1981, was IBM 's first colour graphics card, and as such, colour computer display standard, for the PC.
		CGA could display 80×25 or 40×25 character text in 16 colours, 640×200 pixels bitmap graphics in 2 colours or 320×200 in 4 colours, consisting of two palletes: either cyan, magenta, fl, and white or green, red, yellow, and fl.
		For business and wordprocessing use, IBM launced its Monochrome Display Adapter (MDA) at the same time as the CGA (the MDA produced a significantly better display sharpness in 80-column mode).
	www.serebella.com /encyclopedia/article-Color_Graphics_Adapter.html (757 words)

	Monochrome Display Adapter (Site not responding. Last check: 2007-10-20)
		The MDA could display 80×25 high resolution characters of monochrome text with various display attributes (PC video mode 7).
		Character display attributes of the MDA was the following: invisible, underline, normal, bright (bold), reverse video, and blinking; some of the attributes could be combined, so that e.g., bright, underlined text could be produced.
		The total screen resolution of the MDA was 720×350, roughly similar to the later third-party Hercules Graphics Card which in addition to the MDA's text mode featured monochrome bitmapped graphics of the same high resolution, thus providing business users with graphics without sacrificing the high text quality.
	www.sciencedaily.com /encyclopedia/monochrome_display_adapter (295 words)

	How It Works: Display Adapters Part III
		Basic monochrome adapters were capable of 720X250 resolution, and could only display basic text (Alphanumeric, or A/N) symbols.
		MDA display cards fit into a standard ISA slot, and contained no memory or BIOS of their own.
		Unlike the MDA, which was only capable of displaying alphanumeric characters, the CGA video was able to display text, and also use "All Point Addressable" (APA) pixel addressing.
	www.firingsquad.com /guides/hiwdisplay/page4.asp (708 words)

	Encyclopedia: Monochrome Display Adapter (Site not responding. Last check: 2007-10-20)
		A text mode program communicates with the user by only displaying text and possibly a limited set of predefined semi-graphical characters, which allow to draw rudimentary boxes around portions of text, either to highlight the content or to simulate widget or control interface objects found in GUI programs.
		However, the MDA again could not address individual pixels; it could only work in text mode, limiting its choice of display patterns to 256 characters (see Code page 437).
		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, colour and space resolution).
	www.nationmaster.com /encyclopedia/Monochrome-Display-Adapter (1113 words)

	What is MDA? First 1981 IBM Monochrome Display Adapter Logic
		The monochrome display adapter (MDA) was the the first display adapter available.
		The MDA uses a 9 x 14 dot character box that provides clean sharp characters.
		Because most of the software packages developed today, even word processing and spreadsheets, use graphics to some extent, the MDA is generally considered obsolete.
	bugclub.org /beginners/hardware/mda.html (94 words)

	[No title]
		You can also do this by typing a number from 1 to 2, 4, or 16, depending on your display adapter (the colors are numbered from left to right on the bar).
		Displaying the menu on the screen (by pressing F9) also lifts the pen, as does pressing Esc.
		To help you align the outlined area, the graphics editor displays horizontal and vertical guidelines intersecting at the upper left corner of the outlined area.
	www.cof.orst.edu /net/software/email/ccdos/dosugapd.txt (3059 words)

	Fixed Frequency FAQ -- What are MDA, Hercules, CGA and EGA adapters?-- MonitorWorld.com
		This was the first display adapter shipped with the IBM PC, and was only capable of displaying text, at an effective pixel addressability of 720x350.
		The MDA provides crisp monochrome text at a low vertical refresh rate of 50 Hz, and a 18.43 kHz horizontal refresh rate.
		EGA displays (Enhanced Colour Displays) have a 60 Hz vertical refresh rate and horizontal refresh rates of 15.75 or 21.8 kHz.
	www.monitorworld.com /faq_pages/q18_page.html (266 words)

	What is video adapter? - A Word Definition From the Webopedia Computer Dictionary
		The display capabilities of a computer, however, depend on both the logical circuitry (provided in the video adapter) and the display monitor.
		Modern video adapters contain memory, so that the computer's RAM is not used for storing displays.
		In addition, most adapters have their own graphics coprocessor for performing graphics calculations.
	www.webopedia.com /TERM/v/video_adapter.html (563 words)

	Video Standards at MonitorWorld.com informational interchange for monitors, adapters, and video cards (Site not responding. Last check: 2007-10-20)
		MDA was the original display adapter on the IBM PC.
		It had a high-resolution mode and a monochrome mode, and was compatible with all previous monitors, including CGA and monochrome.
		When coupled with a proper IBM display, it supported all CGA modes, but it was not compatible with previous monitors.
	www.monitorworld.com /Cables/video_standards.html (2051 words)

	Details of the EGA (Site not responding. Last check: 2007-10-20)
		MONOCHROME When driving a monochrome display the EGA supports a text mode that is identical in appearance to that of the Monochrome Display Adapter (MDA) with characters in 9 X 14 boxes.
		Attributes generally work the same way as the MDA with the exception of reverse video.
		When configured for monochrome operation the EGA provides a graphics mode with a resolution of 640 X 350, with attributes of fl, white, high- intensity white, and blink.
	community.borland.com /article/0,1410,15957,00.html (392 words)

	The page cannot be found (Site not responding. Last check: 2007-10-20)
		The page you are looking for might have been removed, had its name changed, or is temporarily unavailable.
		Make sure that the Web site address displayed in the address bar of your browser is spelled and formatted correctly.
		If you reached this page by clicking a link, contact the Web site administrator to alert them that the link is incorrectly formatted.
	www.absoluteastronomy.com /encyclopedia/m/mo/monochrome_display_adapte... (121 words)

	Description of IBM standard video modes (Site not responding. Last check: 2007-10-20)
		The Monochrome Display Adapter, or MDA was text-only and no color.
		This was the original display adapter on the IBM PC.
		It could also display 16 colors, 4 at a time, on a 320 x 200 display.
	paulaxford.com /computer_collection/ibm_graf.htm (212 words)

	Monochrome Display Adapter Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-20)
		Find monochrome display adapter - Your relevant result is a click away!
		The MDA's high character resolution (sharpness) was a feature meant to facilitate business and wordprocessing use: Each character was rendered in a box of 9×14 pixels, of which 7×11 made out the character itself (the other pixels being used for space between character columns and lines).
		This resolution was better than even the highest monochrome resolution CGA cards could offer.
	www.ourlocalcolor.com /encyclopedia/Monochrome_Display_Adapter (598 words)

	Tandy 4820 SX/T 250-5140 VGA/1024 Modes
		The adapter supports both monochrome and color analog VGA fixed-frequency monitors as well as compatible analog multi-frequency monitors.
		It is installed at the factory to indicate that the adapter has 512KB of video memory.
		When in a CGA mode, a Hercules, or an MDA mode, the adapter emulates the earlier video standard.
	support.radioshack.com /support_computer/doc1/1671.htm (1044 words)

	Tandy 1000 SL/2 250-1402 Video Modes (Site not responding. Last check: 2007-10-20)
		The color video is compatible with industry standard Color Graphics Adapter (CGA) boards and supports text and graphics in as many as 16 colors and provides resolutions as high as 640 x 200 pixels.
		The monochrome video is compatible with industry standard Monochrome Display Adapter (MDA) boards and the Hercules video adapter.
		Changing the Video Display: You can toggle your computer between color and monochrome monitor from the keyboard; if the screen is blank when you start your computer, press CTRL-ALT-SHIFT-V to change to the appropriate video display for your monitor.
	support.radioshack.com /support_computer/doc1/1284.htm (254 words)

	WinDrivers Computer Tech Support Forums - mainboard MDA resources
		Withthe introduction of the Enhanced Graphics Adapter (EGA) in 1985, and then the Video Graphics Array (VGA) in 1987,more functions were added to handle the new capabilities of each adapter.
		MDA as in model driven architecture..not as in monochrome display adapter..is a feature some graphics cards support if they are designed explicitly for CAD programs
		And I think the Search for MDA Resources option would normally be for Monochrome Display Adaptor, to tell the AGP bridge whether to search on the PCI/(ISA if present) bus to see if it needs to map the memory space of a possible monochrome secondary display adaptor.
	forums.windrivers.com /showthread.php?t=54198 (981 words)

	The world's top color graphics adapter websites
		The Color Graphics Adapter (CGA), introduced in 1981, was IBM's first colour graphics card, and as such, colour computer display standard, for the PC.
		CGA could display 80×25 or 40×25 character text in 16 colours, 640×200 pixels bitmap graphics in 2 colours or 320×200 in 4 colours, consisting of two palettes: either cyan, magenta, fl, and white or green, red, yellow, and fl (PC video modes 0-6).
		For business and wordprocessing use, IBM launched its Monochrome Display Adapter (MDA) at the same time as the CGA.
	dirs.org /wiki-article-tab.cfm/color_graphics_adapter (185 words)

	Assembly Language - Long Entry (Site not responding. Last check: 2007-10-20)
		The upper left corner of the display is DH = 0h, DL = 0h, while the lower right corner is DH = 18h (24), DL = 27h (39) for 40-column mode or 4Fh (79) for 80-column mode.
		Early versions of the Monochrome Display Adapter (MDA) and the Compaq display adapter had a bug.
		They incorrectly reported the cursor start and end scan lines after the video adapters were initialized (the mode had changed or the machine was powered on).
	www.itlnet.net /Programming/Program/Reference/asm/ng70ff6.html (321 words)

	What is Hercules graphics? - A Word Definition From the Webopedia Computer Dictionary
		Suwannukul developed the system so that he could produce his doctoral thesis on PC equipment using his native Thai alphabet.
		First offered in 1982, the original Hercules system filled a void left by IBM's MDA (monochrome display adapter) system.
		MDA produces high-resolution monochrome text but cannot generate graphics.
	www.webopedia.com /TERM/H/Hercules_graphics.html (144 words)

	Monochrome Display Adapter (MDA)
		The first video cards used in the earliest machines conformed to the MDA standard, established by IBM as part of the original PC.
		MDA is a monochrome-only, text-only standard, allowing text display at 80x25 characters.
		Each character is made up of a matrix that is 9 dots wide by 14 dots high, yielding an effective resolution of 720x350 at a refresh rate of 50 Hz (of course it is text-only so these dots are not individually addressable).
	www.pcguide.com /ref/video/stdMDA-c.html (157 words)

	MDA definition - isp.webopedia.com - The Glossary for Internet Service Providers
		MDA definition - isp.webopedia.com - The Glossary for Internet Service Providers
		Abbreviation of monochrome display adapter, an old monochrome video standard for PCs.
		Describes the different types of video standards including Monochrome Display Adapter (MDA), Hercules graphics card, Color Graphics Adapter (CGA), Enhanced Graphics Adapter (EGA), Video Graphics Adapter (VGA), and Super VGA (SVGA).
	isp.webopedia.com /TERM/M/MDA.html (99 words)

	My Computer Collection - Listing
		IBM Monochrome Display Adapter (MDA) with printer port, produces 25 rows x 80 columns of (7-bit) ASC-II characters.
		This updated version of the AT was seven times faster than the PC/XT and introduced the "Baby AT" motherboard form factor which became the standard until ATX replaced it in 1995.
		The Hercules graphics adapter provided (pixel-addressable) graphics modes in addition to the MDA's text mode.
	paulaxford.com /computer_collection/pc_comps.htm (396 words)

	Computer display standard - Questionz.net , answers to all your questions (Site not responding. Last check: 2007-10-20)
		They are often a combination of resolution (specified as the width and height in pixels), colour depth measured in bits, and refresh rate expressed in hertz.
		Older standards * XGA - Extended Graphics Array is an IBM display standard introduced in 1990.
		CGA can display 80 x 25 or 40 x 25 text in 16 colours, 640 x 200 pixels graphics in 2 colours or 320 x 200 in 4 colors (IBM PC video modes 0-6).
	www.questionz.net /DVD/VGA.html (505 words)

	kbAlertz: There is no way to display underlined characters in text mode (SCREEN 0) on a color display. Only an IBM ...
		Only an IBM Monochrome Display Adapter (MDA) or a Hercules Graphics Adapter (HGA) which is connected with a monochrome display device can display u
		Only an IBM Monochrome Display Adapter (MDA) or a Hercules Graphics Adapter (HGA) which is connected with a monochrome display device can display underlined characters in SCREEN 0.
		Note that in graphics mode, you may draw lines wherever desired, and you can emulate the monochrome underlining capability.
	www.kbalertz.com /kb_Q35153.aspx (509 words)

	Web Hosting (Site not responding. Last check: 2007-10-20)
		This versatile text and graphics adapter gives your system full IBM and Hercules compatibility and high-resolution monochrome graphics.
		Cables and Adapters built to IEEE standards to ensure high quality communication with your printer and peripherals.
		RF adapter is integrated onto 4 foot long cable.
	www.systemsplususa.com /specials.htm (816 words)

	VIDEO DISPLAY ADAPTERS
		colors are displayed and the speed with which
		The color graphics adapter (CGA) was, at one
		CGA card can display up to 16 colors.
	www.tpub.com /content/fc/14102/css/14102_28.htm (309 words)

	PCGuide - Ref - Video Display Standards (Site not responding. Last check: 2007-10-20)
		The PC Guide site uses a hierarchical structure of pages.
		The general rule of thumb is that the information on the site is displayed in the "Contents" frame, called "C", while the links deeper into the structure are in the "Index" frame, called "I".
		You can find information on the site without using frames in three different ways:
	www.pcguide.com /ref/video/std.htm (191 words)

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