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Frequently Asked Questions

What about Ultra-DMA?

The DV, DVCAM, & DVCPRO Formats -- tech details, FAQ, an...
Ultra-DMA, also knows as UDMA, Ultra ATA, or Fast ATA-2 , is a further enhancement of the EIDE disk-drive interface, available on the newer G3 Macs and on some PCs (Intel 440TX, LX, BX, and later chipsets; VIA/AMD VPX, VP2/97, AMD-640 chipsets; Promise Ultra33 (FastTrack) controller. Win95 and WinNT require an upgrade to exploit UDMA; Win98 supports it fully). UDMA drives tend to be a lot cheaper that SCSI-3 drives, and are often capable of stutter-free capture and playback of DV data.
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How do I enable DMA for a non Ultra-DMA Chipset?

Frequently Asked Technical Questions
In Windows 98 & ME: From the Start menu, go to "Settings>Control Panel" and double-click the "System" icon. From there, click on the "Device Manager" tab. Double-click on "CD-ROM" then double-click on your Plextor CD-RW drive. Select the "Settings" tab. Click the check-box to enable DMA. If the check-box does not appear, contact your motherboard manufacturer and verify that your motherboard IDE controller supports DMA (Direct Memory Access) Mode 2.
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Are Ultra DMA (UDMA) drives supported?

Solaris on Intel - x86 FAQ
I understand Solaris 7 recognizes UDMA drives in native mode. They are not supported in Solaris 2.6 or older, although they are recognized in its compatibility mode as regular ATAPI drives.
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What is ULTra?

ULTra PRT site - Q & A
ULTra stands for Urban Light Transport, an innovative form of PRT (Personal Rapid Transit), which is a system of driverless automatic pods travelling on their own guideway network, available on demand to passengers.
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edit] Q: Why is DMA disabled by default and how do I enable it?

Using FAQ - Knoppix Documentation Wiki
Knoppix does the very best it can to automatically figure out what hardware the PC has & it does this without human intervention. DMA is a feature that speeds up data tranfer on IDE devices such as CDROM drive& HD drives. Some chipsets and/or harddiscs are broken or buggy. Using DMA would cause problems on such systems. If your system works properly with DMA, and you are booting from HD, you can enable it by typing "/sbin/hdparm -c3 -d1 -m16 -k1 /dev/hda" or by editing the "/etc/init.
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What is a Nielsen DMA?

FOX50 -- Funny Original Exciting | FOX 50 FAQ
DMA stands for “Designated Market Area” and is a term used by Nielsen Media Research to identify an exclusive geographic area of counties in which the home market television stations hold a dominance of total hours viewed. There are 210 DMA's in the U.S. More info can be found at Nielsen Media Research, Glossary of Media Terms and Acronyms http://www.nielsenmedia.com.
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How is DMA set for SCSI cards with 8MB RAM cards on the GS?

Apple II Csa2 FAQs: 1Main-Start, Part 1/25 - Apple
DMA needs to be turned off with the Apple HS SCSI card or the RamFAST revision C card. It does not need to be turned off with the RamFAST revision D card (differentiated by being half sized). Current RamFAST cards are revision D as are late model CV Tech cards. It is the RamFAST revision D that is designed to DMA into any RAM card, even 8MB models. It was made around the time of the CV RAM 8MB model that turned into the RAM GS Plus, but functions just as well with the Sirius card.
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What is DMA and why should I have it enabled?

Showshifter Support - Frequently Asked Questions
DMA (Direct Memory Access) is a system whereby the peripherals on your computer can transfer data to and from memory directly, without going via the CPU. If the picture display is jerky, having DMA enabled significantly improves performance. We strongly recommend that you have DMA enabled when running ShowShifter. Windows disables DMA by default.
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What is Ultra ATA/66?

FAQ-Frequently Asked Questions and Answers on ATA 66 ATA66-B...
Ultra ATA/66, also known as Ultra DMA/66, enhances existing ATA (IDE) technology by increasing both performance and data integrity. This new high-speed interface doubles the Ultra ATA/33 burst data transfer rate to 66.6 Mbytes/sec. The result is maximum disc performance using the current PCI local bus environment. For more in depth information, see our ATA to Ultra ATA/66 Technology Paper. Go to Top
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What are Ultra Violet absorption and Lenses?

Eye Glasses FAQ - WikiFAQ - Answers to Frequently Asked Ques...
Spectacle lenses, depending on the type of material will absorb varying amounts of ultraviolet light. In order of best absorbing lens the materials are polycarbonate, plastic and finally glass lenses. Different standards define the amount of absorption required, and/or the definition of the categories for spectacle lenses. The amount of UV absorption is also influenced by tinting, dying and lens coatings.
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Who teaches DMA seminars?

Professional Development & Training Frequently Asked Questio...
DMA seminars are taught by the industry's leading experts who have years of experience helping people succeed in the direct and interactive marketing industry.
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Where are DMA seminars held?

Professional Development & Training Frequently Asked Questio...
DMA seminars are held across the country in cities like Atlanta, Baltimore, Boston, Chicago, Denver, Los Angeles, Minneapolis, New York, San Francisco and St. Louis. We are rolling out our best seminars to more cities each year. If your DM Club would like to bring a DMA seminar to your area, please contact Kristen Cunningham at 212.790.1531 or krcunningham@the-dma.org for more information.
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Can DMA Associates host its applications?

DMA Associates: FAQs
Whether you're a small business or a large enterprise, DMA Associates can provide hosting for our applications. With fault-tolerant, redundant, and scalable servers, our service levels meet or exceed the requirements of the Fortune 100. We'll work to fill the unique requirements of your organization.
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How do I use DMA channels?

BitCtrl Systems -> QNX® Distribution -> FAQ
DMA channels are programmed using Port I/O calls, which are covered in section A). The memory DMA'd from and to should be "DMA SAFE". Before QNX® version 4.24 the shared memory routines always allocate contiguous memory. In 4.24 this changed. Now the only way to allocate DMA SAFE memory with the qnx_segment_alloc_flags() routine. There is a _PMF_DMA_SAFE flag as well as a _PMF_DMA_HIGH flag. Use the DMA HIGH flag if memory above 16Meg is ok, or in other words, you have a PCI adapter.
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Why is DMA capture always one or more frames behind?

libdc1394: The Linux API for IEEE1394 / Firewire cameras
It depends what you mean by "behind". Somewhere in your initialization sequence you would call dc1394_video_set_transmission(). This causes the camera to start spewing out images until you tell it to stop with the same function. The capture functions can't start or stop the camera. The expected behaviour is for the first frame to be current and the next frame to be one frame time later, no matter when you actually call the capture function.
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How do I flush the DMA ring buffer?

libdc1394: The Linux API for IEEE1394 / Firewire cameras
Stop the camera ISO transmission (optional); wait (sleep) at least one frame period (optional, to be sure you have one frame); repeatedly call dc1394_capture_dequeue(,DC1394_VIDEO1394_POLL) until it returns NULL
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What are all of the DMA modes & what are they used for ?

GB DEV FAQs
This is the original DMA that is available on all models of GB. It is used to do a fast copy of sprite attribute data to Object (sprite) Attribute Memory (OAM) located at $fe00-$fe9f. Sprite attribute data includes sprite X & Y coordinates, tile number, palette number, horizontal flip, vertical flip, and sprite priority. No tile graphics are transferred using this method of DMA. Otherwise known as Horizontal Blank DMA. It is only available on the GBC.
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Do you have to be a member of DMA to enter the competition?

DMA ECHO FAQ's
No, not exactly. The DMA International ECHO Awards recognize the total package: brilliant strategy, breakthrough creative, and phenomenal results. All three matter in the real world, so all three are considered here. We judge these criteria individually and as a whole to determine the best of the best. Some campaigns are out-of-sight and get awards. Others are like a bad trip and must go back to the drawing board.
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Why is DMA disabled by default and how do I enable it?

Using FAQ - Knoppix Documentation Wiki
Knoppix does the very best it can to automatically figure out what hardware the PC has & it does this without human intervention. DMA is a feature that speeds up data tranfer on IDE devices such as CDROM drive& HD drives. Some chipsets and/or harddiscs are broken or buggy. Using DMA would cause problems on such systems. If your system works properly with DMA, and you are booting from HD, you can enable it by typing "/sbin/hdparm -c3 -d1 -m16 -k1 /dev/hda" or by editing the "/etc/init.
Related Questions

How can I do a DMA Putpixel or DMA Mem-to-Mem copy?

PC Demos FAQ -- Official FAQ of comp.sys.ibm.pc.demos
You shouldn't bother. Not only is the DMA controller limited to 64K segments, but only on the slowest PC's (we're talking 8086 here) is it faster than doing a REP MOVSW. Still, DMA memory transfers take no CPU time at all, but you still shouldn't use them because they're just too slow on modern PC's. If you really want to do it anyway, just to see if it works, here's a small article from 1989 by Patrick & David O'Riva that can help you.
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What is Ultra Emu Oil*?

Our most frequently asked Questions.
The best we can say is, "we're not sure". We believe it to be a marketing ploy of one our competitors. Their explanation of it is that it does something more than "unprocessed emu oil". We have found no proof of this statement, but we guess they are saying that their emu oil does more than raw, unprocessed, un-sterilized, crude emu oil. Of course we all know consumers should not use emu oil that has not been fully refined and Molecularly Distilled.
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What makes MeltRx 24 Ultra different?

Weight Loss
MeltRx 24 has an unequaled Ayurvedic ingredient that stimulates the breakdown of stored fat and prevents the formation of new fat in fat cells. This ingredient is not new to us, but the research on its weight loss capabilities is fairly new. In addition, MeltRx 24 Ultra has 27 properly apportioned active herbal ingredients (more than any other product) plus, 14 supporting minerals and vitamins.
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When is the best time to take MeltRx 24 Ultra?

Weight Loss
Take as directed approximately 45 minutes before a meal twice daily. Try not to take any later than 4PM as this may make it impossible for you to have a daily appetite for dinner with your family.
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What about: THX - Dolby - Ultra*Stereo - DTS - SDDS?

Audio Post FAQ's
This is a BIG question. This one point alone causes much confusion amongst filmmakers. Please take a moment and read this paragraph carefully. If you need more information after that, please contact either Gnome Productions or Magnolia Studios and we will help you out. First, about THX. THX [tm] is not something that you DO to your soundtrack, it is just a set of sound reproduction or mixing conditions that optimize the sound of your film's soundtrack in exhibition.
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What is 'ultra-pasteurized' milk?

Organic Valley | Milk
Ultra-pasteurized milk (UHT) has been flash-heated with steam to 280?F and then vacuum chilled rapidly back down to 38?F. This temperature variation kills more microorganisms than regular pasteurization. The result is milk with a longer shelf life.
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WHAT IS ULTRA VIOLET LIGHT?

FAQS
Ultraviolet (UV) Light, like Visible Light, represents a portion of the sun's electromagnetic spectrum.  Ultraviolet Light occurs at wavelengths between 100 and 400 nanometers (nm) whereas Visible Light occurs between 400 and 700 nanometers.  This makes it the wavelength of light immediately beyond the violet end of the visible light spectrum.   Ultra Violet Light is invisible to humans but may be seen by some animals and insects.
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