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Topic: VRAM

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	Video RAM - Wikipedia, the free encyclopedia
		Video RAM (VRAM) is a term generally used in computers to describe RAM dedicated to the purpose of displaying bitmap graphics in raster graphics hardware.
		The term VRAM is used more specifically to describe a type of dual-ported RAM used in high performance raster graphics hardware.
		In a raster graphics system, the VRAM is called upon to constantly refresh the display, and at the same time be responsive to modifications from the host system.
	en.wikipedia.org /wiki/VRAM (162 words)

	Howstuffworks "How RAM Works"
		VRAM is located on the graphics card and comes in a variety of formats, many of which are proprietary.
		The amount of VRAM is a determining factor in the resolution and color depth of the display.
		VRAM is also used to hold graphics-specific information such as 3-D geometry data and texture maps.
	www.howstuffworks.com /ram4.htm (663 words)

	* VRAM - (Computing): Definition
		VRAM (Video RAM) - This is dual-ported memory made specifically for video cards that was very similar to DRAM but was able to receive and send data at the same time...
		VRAM must be fast enough to supply data to the display electronics at the speed at which the screen is scanned.
		RDRAM is already being used in place of VRAM in some graphics accelerator boards, but it is not expected to be used...
	en.mimi.hu /computing/vram.html (598 words)

	Fixed Frequency FAQ -- What is the difference between VRAM and DRAM?-- MonitorWorld.com
		VRAM is a special type of DRAM which is dual-ported.
		VRAM is a special type of DRAM which includes a shift register that can be loaded in parallel from an entire row in the DRAM array in approximately the same time as a single read cycle.
		VRAM is slightly more expensive on a $/MB basis and is usually about 1 generation behind in terms of common chip densities.
	www.monitorworld.com /faq_pages/q20_page.html (1022 words)

	VRAM -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-07)
		VRAM an acronym for Video (A tool for driving or forcing something by impact) RAM.
		Generally a term used in computers to describe RAM dedicated to the purpose of displaying (An image represented as a two dimensional array of brightness values for pixels) bitmap graphics in (Formation consisting of the set of horizontal lines composed of pixels that is used to form an image on a CRT) raster graphics hardware.
		The term VRAM is used more specifically to describe a type of (Click link for more info and facts about dual-ported RAM) dual-ported RAM used in high performance raster graphics hardware.
	www.absoluteastronomy.com /encyclopedia/v/vr/vram3.htm (191 words)

	[No title]
		VRAM is multipurpose; it can store pattern data, horizontal scroll data, sprite tables, and background name tables.
		VRAM fill --------- VRAM fills are used to repeatedly write a given data value to multiple sequential addresses in VRAM.
		In the case of a VRAM fill, the CD2-CD0 bits are set to the same value required for a VRAM write.
	cgfm2.emuviews.com /txt/genvdp.txt (7214 words)

	[No title]
		To the operating system, VRAM looks a lot larger than it actually is. Quartz handles the details of swapping data in and out of VRAM as needed, using a replacement algorithm tuned to keep the most frequently used pieces of data in VRAM as much as possible.
		Once VRAM is full, there is a constant dance of data moving between RAM and VRAM as needed to (ideally) keep the most frequently used data in VRAM.
		VRAM is the place to be, and anything that's not there has to get there before drawing can begin.
	arstechnica.com /reviews/os/macosx-10.4.ars/14 (3078 words)

	Definition of VRAM
		Unlike most system RAM, VRAM chips are dual-ported, which means that while the display is reading from VRAM to refresh the currently displayed image, the processor is writing a new image to the VRAM.
		This high-performance VRAM is dual-ported, has about 25% more bandwidth than standard VRAM, and typically costs less.
		This is also high-performance VRAM, developed by MoSys, which divides the memory into divisions of 32 KB that can be accessed individually.
	www.sharpened.net /glossary/definition.php?vram (341 words)

	Video RAM - VRAM
		Also known as dual-ported memory, VRAM is short for Video RAM.
		VRAM is a special, more expensive type of RAM chip capable of performing read and writes at the same time and being accessed by two devices simultaneously.
		VRAM is a commonly used as video memory increasing the overall speed of the video card.
	www.computerhope.com /jargon/v/vram.htm (64 words)

	video random access memory from FOLDOC (Site not responding. Last check: 2007-11-07)
		VRAM may be built from special memory integrated circuits designed to be accessed sequentially.
		The VRAM may be dual ported in order to allow the display electronics and the CPU to access it at the same time.
		In an IBM PC the VRAM is located on the display interface card and 0.5 - 2 MB is typical.
	foldoc.doc.ic.ac.uk /foldoc/foldoc.cgi?VRAM (153 words)

	Smart Computing Encyclopedia Entry - video random-access memory (VRAM) (Site not responding. Last check: 2007-11-07)
		And even though some people use VRAM (pronounced “vee-ramm”) and video memory interchangeably, VRAM actually refers to a type of chip that can perform reads and writes at the same time, making it faster than DRAM (dynamic RAM).
		Because VRAM chips enhance graphics performance, manufacturers often place them on video cards to speed up the creation of on-screen images (but they may also be built into the motherboard on some systems).
		A small portion of video memory (which could be VRAM if that’s what type of memory your video card uses) is allocated to assist the accelerator in this endeavor.
	www.smartcomputing.com /editorial/dictionary/detail.asp?guid=&searchtype=1&DicID=19471&RefType=Encyclopedia (421 words)

	What is VRAM? - A Word Definition From the Webopedia Computer Dictionary (Site not responding. Last check: 2007-11-07)
		VRAM is special-purpose memory used by video adapters.
		This enables the RAMDAC to access the VRAM for screen updates at the same time that the video processor provides new data.
		VRAM yields better graphics performance but is more expensive than normal RAM.
	www.webopedia.com /TERM/V/VRAM.html (140 words)

	video RAM - a Whatis.com definition - see also: VRAM (Site not responding. Last check: 2007-11-07)
		Video RAM (VRAM) means in general all forms of random access memory (RAM) used to store image data for a computer display.
		Somewhat confusingly, the most common type of video RAM is called Video RAM (VRAM).
		Window RAM (WRAM), unrelated to Microsoft Windows, is very high-performance video RAM that is dual-ported and has about 25% more bandwidth than VRAM but costs less.
	searchstorage.techtarget.com /sDefinition/0,,sid5_gci213325,00.html (596 words)

	New VRAM Memory Could Replace All Mechanically Driven Storage Media
		VRAM memory has the potential to replace all mechanically driven storage media, including computer hard drives and compact discs.
		VRAM dramatically reduces the need for transistors, leading to lower cost, and retains information without continual refreshing, reducing the power requirement.
		In addition to its freedom from moving mechanical parts, the technology is particularly advantageous when a component or system, once implemented, is difficult or impossible to retrieve.
	www.sciencedaily.com /releases/2000/03/000307090734.htm (669 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		For VRAM addresses in different screens, see note 4b1 (port 98).
		VRAM addresses: The addresses for each of the 8 (MSX2) screen modes is shown below.
		Sprite (0=On, 1=Off) 2 VR0 VRAM size and speed 3 VR1 VRAM size and speed 4 CB colour Bus direction (0=Output, 1=Input) 5 TP ?Transparent from palette 6 LCS Lightpen Select (active 1) connected trough colourbus 7 MSE Mouse select (active 1) connected trough colourbus Register 9: Mode register 3 bit Name Expl.
	www.komkon.org /fms/MSX/Docs/Portar.txt (3617 words)

	DBLP: Vram Kouramajian
		Vram Kouramajian, Ramez Elmasri: The Design and Evaluation of a Magnetic/Optical Access Structure for Temporal Databases.
		Vram Kouramajian, Ross Dargahi, Jerry Fowler, Donald G. Baker: Consortium: A Framework for Transaction Collaborative Environments.
		Vram Kouramajian, Ramez Elmasri: Mapping of 2-D Temporal Extended ER Models into Temporal Nested Relational Models.
	www.informatik.uni-trier.de /~ley/db/indices/a-tree/k/Kouramajian:Vram.html (312 words)

	Mac VRAM
		MacGurus has dwindling inventories of the proprietary 2MB VRAM daughtercards required to upgrade the last revision of the Twin Turbo 128M2 to 4MB VRAM.
		VRAM for the Power Macintosh 4400 is no longer available.
		Note: Some units allegedly shipped with two (2) 256k VRAM SIMMs and two empty slots, although Macintosh Quadra 950 Integrated Circuits and Quadra 950: Video Support state that expansion to 2MBs total is possible only through the installation of four (4) additional 256k VRAM SIMMs.
	www.macgurus.com /products/ram/vram.php (1164 words)

	Biamp Systems VRAM Variable Resource Automixer - AVsuperstore.com
		The ADANTAGEÂ® VRAM Variable Resource Automixer is a 10-in/2-out programmable automatic mixer, which is completely user tamper proof, providing no external controls.
		The VRAM is extremely versatile, with an extensive set of features, and is designed to adapt to a variety of applications.
		The VRAM is covered by a 5-year warranty.
	www.avsuperstore.com /moreinfo.cfm?id=2354 (221 words)

	Linux News :: VRAM Storage Device - How to use the memory on GFX board in a different way... (Site not responding. Last check: 2007-11-07)
		VRAM Storage Device - How to use the memory on GFX board in a different way...
		The FS may be placed then on such mtdblock device and kernel may boot from it.
		Using console-only server with some kind of modern 32MB gfx card may use the vram as huge swap (which is way faster than swap on disk).
	hedera.linuxnews.pl /_news/2002/09/03/_long/1445.html (999 words)

	Tipos de Memoria RAM - Monografias.com
		A diferencia de la convencional memoria RAM, la VRAM puede ser accedida por dos diferentes dispositivos de forma simultánea.
		Esto permite que un monitor pueda acceder a la VRAM para las actualizaciones de la pantalla al mismo tiempo que un procesador gráfico suministra nuevos datos.
		VRAM permite mejores rendimientos gráficos aunque es más cara que la una RAM normal.
	www.monografias.com /trabajos3/tiposram/tiposram.shtml (1883 words)

	Virtual Reality Aided Modeler
		VRAM is both an ongoing testbed for theory and methodology in the fields of three dimensional user interfaces (3DUIs) and Virtual Architecture, and a conceptual design tool supported by Virtual Reality technology.
		The outcomes from the project should consist of an intuitive and comprehensive immersive surface modeler, next to a set of taxonomies and guidelines for the development of 3DUIs.
		The VRAM project was initiated in WS 98/99, in which former assistant Holger Regenbrecht built up the basic structure for the VRAM software environment together with a large group of students.
	www.uni-weimar.de /architektur/InfAR/vram (528 words)

	NewGWorlds in VRAM and AGP Memory
		It is relatively slow to write to a VRAM pixel image from system memory, but it is very quick to do a hardware copy from VRAM to VRAM or VRAM to the screen.
		Since there is currently no mechanism to determine if a copy operation will use hardware acceleration, it is recommended that all pixel images allocated in VRAM be the same bit depth and have the same color table as the screen.
		In the same non-accelerated case performance from VRAM to the screen will be significantly slower than from system memory.
	developer.apple.com /technotes/tn/tn1182.html (2742 words)

	Adding VRAM dramas (Site not responding. Last check: 2007-11-07)
		I have a 266Mhz MT RevB, and have previously owned the same model but a different Mac altogether.
		When this vram is installed, on restarting I get a lines across the screen and the cursor becomes blocky.
		I have tried two other 4meg VRAMS and now two different Macs.
	www.seriousliving.net /new-3874126-568.html (75 words)

	AVSIM Online's Discussion Forums - "REPORT:iMac 400 (8MB VRAM) and Fly II (long)"
		When I check the video memory utilization (with the ATI control panel that came with my add-on card), the GM version with its untweaked render.ini file is using 2MB less VRAM than the beta version whose render.ini has been tweaked.
		I think there really may be something in that render.ini files that's limiting VRAM usage.
		The "tweaked" file in my beta is using 2MB more VRAM that the "box stock" version in the GM.
	www.avsim.com /dcforum/DCForumID87/82.html (2140 words)

	The Ultimate MSX FAQ - MSX Hardwarelist section
		FS-A1: MSX2 computer, 64kB RAM, 128kB VRAM (there is a fl and red version) [1] [2] [3] [4] [5] [6] [7] [8] [9]
		VG 8235: MSX2 computer, 128kB RAM, 128kB VRAM, 360kB 3,5" floppy disk drive (VG 8235 comes in 3 different versions, 00 and 20 (only internal) and the 8235/39 which is a French version with AZERTY keyboard) [1] [2] [3] [4] [5]
		HB-T600: MSX2 computer, 128kB RAM, 128kB VRAM, JIS 1, 1 720 kB floppy diskdrive, built in modem (300/1200 baud) stocks terminal unit (Communication terminal) [1] [2] [3] [4]
	www.faq.msxnet.org /hardware.html (6566 words)

	XLR8YOURMAC.COM's Adding RAM or VRAM to the Apple Beige G3
		Ensure that the SDRAM and SGRAM (Vram) module(s) you are buying are certified for use in the Apple G3 systems.
		Close up the case, start the Mac and make sure the new vram is recognized by the system.
		If the added memory is not shown, verify that the dimm is seated and that it is the proper type of SGRAM module for the Apple G3 systems.
	www.xlr8yourmac.com /G3-ZONE/G3_RAM.html (1279 words)

	ATI NVIDIA GET VRAM 0.80 - MacUpdate
		ATI NVIDIA GET VRAM is a tool to show free VRAM and some other OpenGL Perfromance values.
		Open 1 window and hit refresh and TC is 141 and VRAM is 53.
		Maybe that's just how graphics cards work, I don't pretend to know the inner workings of them, although I understood that each window under OS X is converted to a texture and rendered like that.
	www.macupdate.com /info.php/id/15566 (495 words)

	MicroMac 640 by 480 Screen upgrade for Color Classic (Site not responding. Last check: 2007-11-07)
		VRAM or Thousands of colors with 768KB or 1MB VRAM
		Two VRAM sockets for 256KB or 512KB VRAM SIMMs
		MicroMac can provide a 256KB VRAM to display 16-bit color, or if your slower logic board already has expanded VRAM, you can transfer the VRAM SIMM to the new faster logic board.
	www.micromac.com /products/video_upgrade_cc.html (402 words)

	68040 LC575 Logic Board Upgrade FAQ
		There are 2 sockets for VRAM on the right side see our logic board picture.
		You must install two VRAM SIMMs of the same size into the two sockets in order for the VRAM to function correctly.
		If you currently have a 512KB VRAM SIMM installed in your Mac, you must get a second 512KB VRAM SIMM in order for the video to work on the LC575 logic board upgrade.
	www.micromac.com /FAQ/faq_lc575_upgrade.html (2016 words)

	Video RAM (VRAM) and Other Video DRAM Technologies
		Modern video adapters use their own, specialized RAM that is separated from the main system memory.
		Video cards have therefore spawned the creation of several new, innovative memory technologies, many of them designed to allow the memory to be accessed by the processor and read by the video card's refresh circuitry simultaneously.
		In addition to VRAM, several other new memory technologies and designs have evolved to maximize performance with video cards.
	www.pcguide.com /ref/ram/techVRAM-c.html (270 words)

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