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Topic: RAMDAC

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	iXBT: Two modes of RAMDAC operations
		RAMDAC в чипсете i740 (равно как и во всех других графических чипсетах) имеет два режима работы.
		Выбор режима работы RAMDAC никак не связан с типом используемой видеопамяти.
		RAMDAC работает со скоростью 205 MHz, во всех других режимах с другой глубиной представления цвета палитра не используется, и RAMDAC работает со скоростью 220 MHz.
	www.ixbt.com /video/ramdac.html (1387 words)

	RAMDAC - Random Access Memory Digital to Analog Converter
		RAMDAC is a acronym that can contains many meanings which are listed below.
		There may be many popular meanings for RAMDAC with the most popular definition being that of Random Access Memory Digital to Analog Converter
		If you have more information or know of another definition for RAMDAC, please let us know so that we can review it and add that information to our database.
	www.auditmypc.com /acronym/RAMDAC.asp (182 words)

	Sapphire Forums - X1600 PRO 256 MB DDR2 PCI-E Ramdac Hızı
		Kartın özelliklerinde 500 Mhz Ramdac hızı, 800 Mhz lik bellek hızına sahip olduğu söyleniyordu.
		Bildiğim kadarıyla 500 Mhz lik ramdac hızı default ramdac hızı, yani overclock edilmemiş hız.
		Peki ben neden 400 Mhz lik ramdac hızıyla çalışıyorum?
	www.sapphiretech.com /en/forums/showthread.php?p=26814 (351 words)

	ramdac - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "ramdac" is defined.
		RAMDAC : Stammtisch Beau Fleuve Acronyms [home, info]
		RAMDAC : BABEL: Computer Oriented Abbreviations and Acronyms [home, info]
	www.onelook.com /?loc=rescb&w=ramdac (95 words)

	RAMDAC définition RAMDAC
		RAMDAC : Acronyme de Random Access Memory Digital to Analogic Converter.
		RAMDAC définition RAMDAC, RAMDAC définiton de RAMDAC : Acronyme de Random Access Memory Digital to Analogic Converter.
		RAMDAC définition RAMDAC, Le document XML doit contenir un élément de niveau supérieur.
	dictionnaire.phpmyvisites.net /definition-RAMDAC-10333.htm (349 words)

	almanach graphic chipsets
		RAMDAC is a part of graphics controller responsible for converting the pixel values from digital to analog form.
		When the RAMDAC is switched to 8-bit mode, the values loaded are 8 bits wide, and their format is not compatible with the 6-bit one.
		RAMDAC speed is a frequency at which the RAMDAC processes the pixels and sends the video signals to to the monitor.
	www.plasma-online.de /english/help/almanach/ramdac.html (969 words)

	Smart Computing Encyclopedia Entry - random-access memory digital-to-analog converter (RAMDAC) (Site not responding. Last check: )
		RAMDAC is a video adapter chip that maintains the color palette and changes digital data from memory into analog signals for display on a monitor.
		Many times per second, the RAMDAC reads the contents of the video memory, converts the information, and sends it over the video cable to the monitor.
		The type and speed of the RAMDAC has a direct impact on the quality of the screen image, how often the screen can be refreshed per second, and the maximum resolution and number of colors that a monitor can display.
	www.smartcomputing.com /editorial/dictionary/detail.asp?searchtype=2&DicID=18710&RefType=Encyclopedia&guid= (181 words)

	Clock synchronization system - Patent 4868548
		This "RAMDAC" may be provided on a single IC chip and incorporates a random access memory and integral digital-to-analog converters to provide a complete color palette for the video display.
		The external clock is actually produced from the "RAMDAC" and is at a frequency which is a submultiple of the frequency of a data or pixel clock which is internal to the "RAMDAC".
		The down counter also receives the external clock which is a submultiple of the RAMDAC internal video clock and with the down counter preset to count down or subtract by a integer "n" which is the submultiple ratio between the external and internal clocks.
	www.freepatentsonline.com /4868548.html (5386 words)

	Re: [linux-fbdev] Cyrix Cx5530 (Site not responding. Last check: )
		The system also allows to set explicit timings for given modes, which may be desireable to match the mode to those set by other OSes or XFree to avoid having to set up multiple geometry slots for the same mode in the monitor.
		Using doubling-capabilities of the chipset, it may well be, that the programmed clock of the clock systhesizer is higher than what the ramdac gets.
		However it might as well be, that the ramdac is still driven at the high frequency, just getting allways the same pixel twice.
	www.ggi-project.org /mailinglist/nov99/195.html (266 words)

	[No title]
		Ramdac "ramdac-type" This specifies the type of RAMDAC used on the board.
		The Diamond SS2410 RAMDAC is reported to be compatible when operating in 15bpp mode (not 16bpp).
		While the ICS5341 RAMDAC is usually recognized as RAMDAC you MUST set it as ClockChip to be able to use the programming capabilities.
	linuxcommand.org /man_pages/XF86_Accel1.html (4288 words)

	Motherboard BIOS Updates
		There are also some specific circuitry like the RAMDAC which is used to convert the digital signal form to an analog signal form as required by the graphic monitor as well as the expansion connector to allow the use of add-on card for additional feature like Mpeg acceleration, TV-Tuner, ect, ect..
		The ability for the RAMDAC to accomplish this process is what determines its quality and this quality factor of the RAMDAC has a very important effect on the overall performance of the graphic card.
		The RAMDAC frequency measured and expressed in MHZ simply means the number of operations this circuit can accomplish in a period of time of one second.
	www.active-hardware.com /english/hardinfo/graphic.htm (2230 words)

	What is RAMDAC? - a definition from Whatis.com - see also: random access memory digital-to-analog converter
		- RAMDAC (random access memory digital-to-analog converter) is a microchip that converts digital image data into the analog data needed by a computer display.
		It combines a small static RAM (SRAM) containing a color table with three digital-to-analog converters that change digital image data into analog signals that are sent to the display's color generators, one for each primary color - red, green, and blue.
		A logical color number in the digital data input to SRAM is used to generate three separate values obtained from the table - one for each of red, green, and blue - that are output to one of three digital-to-analog converters.
	searchsmb.techtarget.com /sDefinition/0,,sid44_gci214256,00.html (302 words)

	Nforce 3 Chipsets, 6800(all) & AGP Fast Writes Solution. - nV News Forums
		What I mean is lower the clock rate to equal your ramdac (all 3 clock rates which is 2d/3d and low power rate).
		Despite the ram in the name, your ramdac (or in the 6800's case dual ramdacs) is solely responsible for generating the video signal for your monitor/lcd from the finished framebuffer.
		Ramdacs run at 400mhz to provide for signals up to 2048x at high refresh rates.
	www.nvnews.net /vbulletin/showthread.php?t=37839 (1541 words)

	EDN Access -- 12.8.94 Draw workstation graphics into mainstream PCs
		High-performance RAMDACs derive the proper SCLK and LOAD clock frequencies from their internal pixel-clock rate, not the clock rate on their input pin; that is, for 1600×1280-pixel resolution (170-MHz operation) at 8 bits/pixel (4:1 multiplexing), PCLK1 would be 85 MHz, and LOAD and SCLK would run at 42.5 MHz--or one-fourth the internal pixel-clock rate.
		In addition, the BIOS should copy the contents of the RAMDAC's cursor and color-palette RAM into system memory and shut down the internal RAM to ensure that data are not corrupted by the clock signal, which may be noisy until the PLL locks.
		You can place the RAMDAC over the analog power plane somewhere close to the digital/analog separation; or, place it astride the digital/analog separation so that the pixel inputs are over the digital-supply plane.
	www.edn.com /archives/1994/120894/25df3.htm (3824 words)

	VGA Interface
		The VGA Interface is designed to be a simple interface to a VGA monitor using the RAMDAC included on the XSV board.
		One of the options of the RAMDAC is to produce colours via a programmable 256 colour lookup table, also known as a colour map (this is pseudo colour mode).
		High colour can produce a possible 32,768 colours by sending two bytes of data to the RAMDAC using 15 bit data, with 5 bits for each primary colour (the MSbit sent is ignored).
	www.itee.uq.edu.au /~peters/xsvboard/vgaout/vgaout.htm (900 words)

	Video card capabilities
		Most isa cards have some random ramdac chip chosen according to the phase of the moon.
		On modern cards, much of the guesswork is reduced because the ramdac is build into the big expensive chip, and there is a reasonably consistent way to find the maximum frequency.
		On modern cards, the ramdac can be set to a continuous range of frequencies.
	www.linuxfromscratch.org /pipermail/lfs-chat/2003-June/015078.html (849 words)

	Refresh Rates and Interlacing
		The RAMDAC is the device in the video card that is responsible for reading the contents of the video memory, converting the digital values in memory into analog video signals, and sending them over the video cable to the monitor.
		The refresh rate is the number of times per second that the RAMDAC is able to send a signal to the monitor and the monitor is able to repaint the screen.
		Many video cards rate their RAMDAC in MHz and you can use this table to see if the card is likely to support the resolution and refresh rate you need.
	www.pcguide.com /ref/video/modesRefresh-c.html (1038 words)

	Руководство по RAMDAC- 3DNews
		RAMDAC это часть графического контроллера ответственного за преобразование пиксельных значений из цифровой в аналоговую форму.
		RAM-часть RAMDAC это небольшая, быстрая статическая память, хранящая значения Красного, Зеленого и Синего в цифровой форме.
		RAMDACи используемые в этих картах были подобны оригинальному VGA RAMDAC.
	www.3dnews.ru /reviews/video/ramdac (921 words)

	Supported hardware
		The 8391 is compatible with the ATandT 20C490 RAMDAC
		Also, the server's RAMDAC probe reportedly causes problems with some of these boards, and a RamDac entry should be used to avoid the probe.
		Clockchip support is still sometimes flaky and on some machines problems with the first mode after startup of XF86_S3 or after switching back from VT have been seen; switching to next mode with CTRL+ALT+``KP+'' and back seems to solve this problem.
	www.xfree86.org /3.3.6/S31.html (1001 words)

	ramdac.org :: Dissent is Patriotic
		Filed under: Editorial, Religion, Politics, Announcements by ramdac
		Recently, I was directed to an article about an event that happened in Jena, Louisiana where a fl student asked Jena High School administration if he could sit under “the white tree”.
		Filed under: Editorial, News, Announcements by ramdac
	www.ramdac.org (1784 words)

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