1. a4v122nane.zip Driver
2. A4V V122 Readme.txt File Contents

A4V V122 Readme.txt Driver File Contents (a4v122nane.zip)

Release Notes
DPS Perception Audio for Video (A4V) Recorder
Version 1.22
Release Date: 16 February 1999
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NOTE: An Adobe Acrobat version of this "readme" is provided with the A4V software.  It is on Disk 1 of the setup diskettes, and is installed in the DPS\A4V\Help directory. If you have the Adobe Acrobat reader installed, we recommend that you view the Acrobat version of this file.
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Thank you for choosing DPS! We believe that our products are the best available, but we know that there is always room for improvement. If you have an idea or a suggestion that you'd like us to consider, please send it to <suggestionbox@dps.com>. We would be glad to hear from you. 
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Contents

1.  What's New in A4V Version 1.22?
2.  Previous Releases of A4V Software
3.  System Requirements
4.  Installation
5.  Summary of Software Changes
6.  The System Wave Driver
7.  Previously Released Information Not Available in the Manual

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1. What's New in A4V Version 1.22?

Improved Timecode Support
The timecode capabilities of the A4V have been fixed and improved.  Together with Perception Player 2.60, the A4V is now capable of reading VITC and LTC timecode during record, and generating VITC and LTC timecode during playback.  See the Perception 2.60 ReadMe for more information.

Audio Resampling and Interpolation
The A4V system wave driver now performs full audio interpolation, allowing high quality playback of audio at any sampling rate.  The functions have been optimized to take only a minimal amount of CPU time, while providing full spectrum interpolation to a base frequency of 44.1 or 48 kHz.

Power Supply Monitor
The A4V is very sensitive to voltage fluctuations, and some power supplies are not capable of providing a sustained current necessary for proper operation.  The new A4V driver monitors the hardware and logs an error in the Event Log if a problem is detected.

Dyna-Sync for Perception RT
Dyna-sync support has been added for the Perception RT.  The A4V will now automatically lock to a Perception, Hollywood, or Perception RT installed in your system.

Bluescreening Fix
A problem that would occasionally cause the A4V system wave driver to bluescreen has been fixed.

Mixer Lockup Fix
A problem that would cause the SndVol32 mixer to stop responding on some systems has been fixed.

Patch for Deskstation
A fix for Deskstation motherboards has been added.

Video Source Initialization
The A4V now remembers the last video source used (Composite or S-Video) and switches to it during boot up.  This makes it unnecessary to have to run A4V Player to initialize the video.

Mirrored Input Volumes
Input record volumes now mirror the input playback volumes in the system wave driver.  In other words, the Line-In, Mic, CD, and S/PDIF levels in the "A4V Playback" mixer will always match those same controls in the "A4V Record" mixer.

Volume Change Bug Fix
A bug where changing the volume in a third party application didn't update the SndVol32 volume has been fixed.

Record Stop Delay Bug Fix
Sometimes stopping audio recording in the system wave driver would cause a small delay.  This has been fixed.

A4V Player: E-E Bug Fix
Fixed a problem where E-E would disappear during batch recording and could not be reactivated.

A4V Player: Long Filename Support
Support for long filenames in the Open dialog in A4V Player has been added.

A4V Player: Still Naming Bug Fix
Fixed a problem with the way names were generated when capturing stills.

A4V Player: Import/Export Settings
Import/Export settings were not immediately activated when changed.  This has been fixed.

A4V Player: Gap Problem Fix
A playlist that contained a gap would not play any video after the gap.  This has been fixed in the latest PVR driver.

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2. Previous Releases of A4V Software

A4V version 1.21 Beta 2

New Features

Automatic Debug Logging
If there is a communications problem with the A4V, a debug log file will be written to
C:\A4V.DBG. The information in this file can be passed to DPS Technical Support to help in
determining the cause of the problem. Note that a debug log file gets written only if the hardware
fails to operate correctly; a file will normally not be written for application-level crashes. Users
wishing to disable debug logging can do so by modifying the following registry entry:
Under key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DpsA4V\Parameters,
set the value "Debug" equal to 0.

Improved Driver Start-up
The A4V driver now does additional processing during boot-up. If the A4V driver fails to load,
check the Event Viewer for further details.

Bug Fixes

* Some computers were experiencing audio/video sync problems when using Video Action.  This has been fixed.
* Scrubbing audio in Speed Razor would occasionally produce a bluescreen.  This has been fixed.
* It was occasionally possible for two applications to attempt to use the A4V at once, which would lead to a board lock-up. This has been fixed.

A4V version 1.21 Beta 1

Reliability Improved. The stability of the A4V driver has been substantially improved in Version 1.21. With earlier versions, users experienced occasional system lockup or blue-screen crashes, especially when using VideoAction NT. Critical portions of the driver were redesigned to eliminate timing conflicts with other software and hardware. This has not only enhanced the A4V reliability, it has also reduced the CPU loading when playing audio.

In addition, the driver now provides greater protection against hardware "lockup" or malfunctions. If the A4V board stops running due to a hardware problem, the driver will detect a timeout and allow the computer to continue operating. This allows you to save your work in progress.

Mixer Performance Improved. Several modifications have been made in the processing of mixer control data, to improve the responsiveness of the mixer. You won't notice any difference if you are manually operating the mixer controls in the A4V Program Player, but if you have set up a complex automated mix, using the A4V Program Player or an editing application such as Video Action NT, these improvements will prevent the mixer sequence from getting out of sync with the audio.

Also, the mixer "smoothing" has been improved. The A4V driver smooths out any mixer level changes, to prevent clicks that can result from sudden step changes in the mix level, especially when small changes are being made. However, this was causing a lag in mixer response when  making large fader changes, particularly at the start or end of a clip. This has been greatly improved.

"Single Master Volume Control" Option Added: Some application programs, such as A4V Player, communicate directly with the A4V driver to control the audio playback and mixer levels. Other programs, such as Media Player or Sound Forge, communicate through the A4V's "system wave driver", which makes the A4V's 4 stereo audio channels look like 4 separate standard sound boards. VideoAction NT uses a combination of the two techniques, depending on whether you are previewing a single clip, or playing from the timeline. In order to provide you with a single master volume control that sets the playback level for both modes, a checkbox has been added to the A4V Wave Driver Configuration panel:



To open this Configuration dialog, open the Windows NT Control Panel (from My Computer, or from Start | Settings | Control Panel), and double-click on Multimedia. Click on the Devices tab, expand the Audio Devices branch, and double-click on Audio for DPS System Wave Driver. In the Properties dialog that appears, click on Settings to display the configuration dialog.

When Single Master Volume is unchecked, the controls in the Windows NT Volume Control mixer are independent from the level controls in any A4V-specific application (such as A4V Player or VideoAction NT). If this checkbox is activated, then the Windows NT Volume Control will override the master playback level in any A4V-specific application. 


Bug Fixes. The following bugs and limitations have been fixed:
* The driver's playback time status was occasionally not reset to zero when new playback was started. This caused some applications, such as Media Player, to erroneously report the playback time.

* When an A4V-specific application (such as A4V Player or VideoAction NT) is not running, the audio input selected in the System Volume Control panel should be patched through to the A4V's output. Occasionally this was not re-enabled after an A4V-specific application was closed.

* Starting an A4V-specific application while the audio was being played through the A4V wave driver sometimes caused the system to hang.

* AVI files that contained video edits (ie "referred" to more than one PVD video file) could be played in the A4V Source Player, but not in the Program Player.


"About Box" Layout Improved:
Information regarding individual file versions is displayed in the Help | About dialog. The layout has been revised to make it easier to read.


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3.  System Requirements

In order to use the DPS Perception A4V in an audio-video editing environment, you must have the following:

* A host computer system with a Pentium or higher processor, at least 32 MB of RAM, and SVGA capable of 800 x 600 true-color display.  

* A full length PCI slot, unobstructed by the CPU fan or any other components, that can be dedicated to the use of the A4V. (Note: the DPS PCI riser kit cannot be used with the A4V board.)

* 3 Mb of available space on your system hard drive for A4V software.

* The hard drive for audio storage must be SCSI, using a PCI SCSI host adapter; ISA SCSI adapters are not suitable. 

* Alternatively, you may be able to use a high performance IDE drive if you have a "bus master" IDE driver installed. Please refer to "Hard Drives for Audio Storage" in section 6, below.

* Microsoft Windows NT 3.51 or higher as your operating system.

* Administrator Privileges in the Operating System environment for installation. (A bug that disabled operation in other than Administrator log-on has been corrected.)
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4.  Installation

Pre installation Tips:

Although the PCI standard is supposed to be a "plug and play" design, your computer may require some setup of the BIOS settings after you've installed the A4V board. Specifically, you may have to use the Setup function to assign an IRQ (Interrupt Request) to the slot in which you've installed the A4V board. Refer to your motherboard's manual for specific instructions. To find an unused IRQ number, select the Resources tab in Windows NT Diagnostics under Administrative Tools. 

The A4V supports IRQ sharing with other PCI devices, but not with ISA devices. Also, you'll have to make sure that the PCI slot you've chosen for the A4V board is capable of "Bus Mastering". According to the PCI specification, all slots are supposed to be Bus Master capable, but some mainboards have one or two slots that are not. Again, you'll have to check your motherboard documentation to find out. For further information, check your A4V User's Guide or the help file: in the hardware installation chapter, read the section titled "Do you know your IRQs?"

Installation: Version 1.20, 

Using the Main A4V Setup Program

Running the main installation program for A4V automatically installs everything including the system wave driver: Run SETUP.EXE and follow the prompts.

If you choose not to install the system wave driver, you can install it at a later time by running SETUP.EXE again.

Installation:  System Wave Driver Only

Using the Control Panel (NT 4.0)

If you have the "system wave driver only" version of the software, installation is done via the Control Panel:

1. Run the Multimedia applet from Control Panel, and click the Devices tab.
2. Click "Add" and choose "Unlisted or Updated Driver."
3. Select the directory that contains the A4V installation software, and follow the prompts.
4. You will need to reboot in order for the wave driver to fully take effect.

Using the Control Panel (NT 3.51)

1. Select Control Panel; select Drivers; select Add.
2. Select Updated or Unlisted Driver; select Search.
3. Navigate to the folder to which you decompressed v1.20 and select the A4V WAV file (e.g., "C:\temp\a4vwav").
4. Select OK, and select OK again at the prompt.
5. The drivers will be copied to your system
6. Reboot

Choosing "Custom" in the installation program from the full installation set will also allow you to specify the system wave devices only.

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5.  Summary of Software Changes

System Wave Device

Allows the A4V to be used as a Windows NT system audio card.

All third-party applications that support uncompressed .wav files under Windows NT will now function with the A4V.

Four "virtual" wave output devices are created, which makes it appear as if there are four separate sound cards installed in your system.

Each virtual wave output device has it's own volume control.

There is a master volume control for controlling final output.

One audio input source for recording audio: audio can come from Line In, Mic In, Audio CD, or S/PDIF.

Dyna-Sync:

With either DPS Perception or DPS Hollywood in your system, your audio timing will automatically be locked to the video timing, even if video playback is not currently selected (i.e., genlocking to an external video source).

(See section 5, "The System Wave Driver," for operational details.)

Other Software Changes

S/PDIF:

Input and output are now active

The problem of the application locking up when the S/PDIF input was selected without a source has been fixed.

Using S/PDIF as a clock source is now operational.

The application now displays warning messages if no clock pulse is present on the S/PDIF input, when attempting to use S/PDIF as a timing source.

Miscellaneous: 

Fixes have been made relating to Play List editing. These include: trimming, deleting, removing, adding, and inserting clips; problems with extra gaps and gaps at the end of the playlist; disassociated audio/video clips; and others.

A problem with some AVI files generated with the A4V Player that could not be loaded into Video Action  NT and other programs has been fixed.

Wav files recorded by the A4V Player are now the same size (in frames) as the video, or down to the nearest frame boundary if recording audio only.

A bug where, in some systems, audio would only play in scrub mode but not in normal mode been fixed.

The program now reads the lengths of WAV files correctly.  

A bug where the user would not be prompted to save the playlist if it contained only animation has been fixed.

A bug with NULL items in batch list recording has been fixed.

Audio only recording now works correctly.

Version checking has been added. The program displays an error message if you are using an older version of the DLL or driver.

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6.  The System Wave Driver

Using the Wave Driver

1. After you have installed the A4V system wave driver and rebooted, go to the Multimedia applet  (for NT 4.0) or the Sound Mapper (for NT 3.51) in the Control Panel. Verify that the driver started properly: there should be four A4V wave output devices and one A4V wave input device listed under Audio.

2. Select "A4V Wave Out 1" as your preferred audio playback device. Windows NT will use this device whenever possible. If it is in use, Windows NT will automatically use the next available device. With the A4V system wave driver you can have up to four applications playing audio through a single A4V card at the same time. Or, a single application with multi audio support can play up to four stereo channels at once, routing each to a different wave output device.

3. Select "A4V Wave In" as your preferred audio recording device. Since the A4V does not support multiple simultaneous recording, only one application may record audio at a time. You can verify that the A4V system wave driver is working correctly by opening several copies of Media Player and playing several wave files simultaneously. Any application that plays audio should now work with the A4V.

Wave Driver Volume Control

Volume control for the A4V system wave driver is provided through the standard Windows NT interface. Typically, this involves running SNDVOL32.EXE, either directly or by double clicking the speaker icon in the lower right hand corner of the screen (NT 4.0 only). (If the speaker icon is not present, run the Multimedia applet from the Control Panel and click "Show volume control on taskbar".)

The Properties window (from the Options menu on SNDVOL32.EXE) lets you select between Playback and Record settings. It also allows you to control which lines are displayed on the mixer panel. If you wish, you may run two copies of SNDVOL32.EXE: one to display the Playback settings and the other the Record settings.

The Playback settings are used to adjust the audio coming out of the A4V. When the A4V is idle, you can select an input source to listen to by clicking the appropriate line. During playback, the current input source is disabled and you may adjust volumes for the four virtual wave output devices. During recording the volume control adjusts the listening volume of the A4V without affecting the actual recording level.

The Record settings are used to adjust audio levels during recording only. You may select the input source that is used, as well as the level at which audio is being recorded.

(NOTE: It is not possible to mix multiple input sources, or to mix an input source with wave output audio.)

Configuring the Wave Driver

There are options available for configuring the A4V system wave driver: Run the Multimedia applet in the Control Panel and click the Devices tab. Double-click the DPS A4V System Wave Driver to bring up the Properties window, then click the Settings button. You will see a window with the following:

Version number: 

This displays the name and current version number of the A4V system wave driver.

Enable A4V Wave Devices: 

This checkbox allows you to turn the system wave devices on and off without disabling the main A4V driver. It is useful if you want to temporarily disable system sounds while still being able to use A4Vspecific applications.


IMPORTANT NOTE: You MUST use the "Enable A4V Wave Devices" checkbox to enable or disable the A4V as a system wave driver if you plan on using A4Vspecific applications such as A4V Player. Do not use the standard Windows NT method of selecting "Do not use audio features on this device" because that will disable the A4V driver entirely.

Enable Dyna-Sync: 

This checkbox enables or disables Dyna-Sync. When Dyna-Sync is enabled, the audio clock used for playback and recording is locked to the video timing of the DPS Perception or DPS Hollywood, preventing the audio from "drifting away" from the video. When Dyna-Sync is disabled, the A4V runs freely. This checkbox has no effect if you do not have a Perception or Hollywood installed, or if you have selected S/PDIF as your preferred clock source (see below). Do not use Dyna-Sync as your source if you are using the DPS A4V as a standalone sound card.

S/PDIF Preferred Clock Source:  

This checkbox specifies whether timing for audio playback is to come from the internal onboard clock, or from the digital S/PDIF input. If you select S/PDIF, be sure you have a valid S/PDIF source connected to the S/PDIF input of the A4V. (If there is no clock pulse present, the A4V will play audio at half speed until a clock pulse is detected.)

Removing the Wave Driver

If you wish to remove the A4V system wave driver, run the Multimedia applet in the Control Panel, click the Devices tab, select the DPS A4V System Wave Driver, and click Remove. You must reboot for your change to take effect.

After the system wave driver has been removed you may continue to use A4Vspecific software (such as A4V Player), since the low level A4V driver will still be active.

Troubleshooting the Wave Driver

If you are having trouble getting the A4V system wave driver to work, follow these guidelines.

If no system sounds are available.

Ensure that you have administrator privileges at installation
In Windows NT 3.51 not all system sounds are available

If you can hear audio, but it is distorted or of poor quality, check the following:

Bring up the Volume Control for A4V (as discussed earlier) while playback is happening and adjust the various volume controls. Many commercially available wave files have very little headroom and can easily distort if the volume settings are too high.

Try playing a 44.1 kHz or 48 kHz audio file. Sample rates other than 44.1 kHz and 48 kHz are intended for off-line use only, and may have aliasing noise in them. Most Windows standard systems sounds are sampled at 22 kHz and will not playback "cleanly".  If you wish to use these sounds, convert them using a third party audio editing application.

If you are not using S/PDIF, ensure that "S/PDIF Preferred Clock Source" is not selected under A4V options (as discussed earlier). If you are using S/PDIF, ensure that there is valid clock pulse present at the A4V's S/PDIF input, or try temporarily disabling "S/PDIF Preferred Clock Source".

If you have an IDE drive, ensure that you are using a bus mastering IDE driver.

If you cannot get any audio output, or if you get errors trying to play audio, first check if the four A4V wave output devices show up under Multimedia in Control Panel. If they do, the A4V 
driver is working correctly. 

Next check the following:
Try playing a 44.1 kHz or 48 kHz audio file from Media Player. If the playback appears to be working (the thumb marker moves along the timeline) but you hear only silence, check the following:

Verify your cabling and connections to ensure the A4V's audio output is reaching your speakers.

Bring up the Volume Control for A4V (as discussed earlier) and make sure all sliders are at about the 75% mark. Make sure none of the Mute buttons are selected.

If you have an input source, try previewing audio by selecting one of the input lines.

If you are not using S/PDIF, ensure that "S/PDIF Preferred Clock Source" is not selected under A4V options (as discussed earlier).

If you get an "All wave devices that can play files in the current format are in use" message from Media Player, try the following:

Disable any voice control software you may be running.

Exit all other applications that use audio. It is possible one of them had a lock on the audio device.

Reboot. If an application doesn't release an audio device correctly, rebooting may be the only way to recover it. (This should rarely happen unless an application crashes during playback or record.)

If you get a "No wave device that can play files in the current format is installed" message from Media Player, check the following:

Ensure that "Enable A4V Wave Devices" is selected under A4V options (as discussed earlier).

Reboot and try again, verifying that the four A4V wave output devices are still showing up in Multimedia.

If the four A4V wave output devices do NOT show up under Multimedia in Control Panel, check the following:

Check for these files in your WINNT\System32\Drivers directory: DPSA4V.SYS; A4VDSP.S; A4VN.S19 (for NTSC only); A4VP.S19 (for PAL only). Make sure they are dated no earlier than June '97. If any are missing or are old, reinstall the A4V software.

Check for this file in your WINNT\System32 directory: DPSA4V.DLL. Make sure it is dated no earlier than June '97. If it is missing or is old, reinstall the A4V software.

Run the Devices applet from Control Panel. Check that there is a driver called "DPSA4V" and that its startup is set to "System". If not, reinstall the A4V software.

Check the Event Viewer to see if there are any system errors regarding the startup of the A4V driver.

Run the Multimedia applet from Control Panel. Click the Devices tab. Check the following:

Verify that there is an audio driver installed called "DPS A4V System Wave Driver". If there is not, reinstall the A4V software.

If present, double click the "DPS A4V System Wave Driver" to bring up its properties. Make sure "Use audio features on this device" is selected and that "Do not map through this device" is deselected.

If OK, click on the Settings button to bring up the A4V Settings window. Make sure "Enable A4V Wave Devices" is selected.

If all the above fails, open your computer and check that your A4V card is still seated properly in its slot.

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7.  Previously Released Information Not Available in the Manual

General A4V Troubleshooting

This section contains information you can use to troubleshoot problems you might encounter while using Perception A4V

Problem: No audio recorded: 
Be sure your audio source is properly connected to your computer before recording. Check that the proper input source has been selected (Line, CD, SP/DIF, etc.). 
Check that the breakout cables are connected with the proper A4V connectors. 
If you choose Record Settings from the Source Player's Settings drop down menu, you can verify that Record Audio is enabled. 

Problem: No video recorded: (Applicable only in a PVR / A4V Configuration)
Be sure your video source (VTR, video camera, etc.) is properly connected to your computer before recording. If you choose Record Settings from the Source Player's Settings drop down menu, you can verify the connection (CAV, Composite, S-Video, D1,WBC) and look at your video both before and during the digitizing.

Problem: No Visual Time Code on Output Monitor: (Applicable only in a PVR / A4V Configuration)
Verify that the loop through connections from the Perception to the A4V are secure and that the proper input source is selected (Composite or S-Video) in the Timecode tab on the Preferences window (on the Program Player's Settings menu). Also be sure that the "Burned In Time Code" checkbox is activated.

Problem: The VTR is not responding: 
Make sure that your serial control cable is properly connected to your computer before you select VTR mode from the player. Make sure that your deck is in remote mode and not local. Confirm that your COM port settings are correctly enabled for your system. Make sure that RS232/422 adapter is firmly connected and receiving power. Make sure that adapter is in Master mode. 

(Remember: deck emulation is not supported with the DPS A4V. For this function to be operable with the PVR only you must use PVR version 2.57 (or higher). 

Problem: GPI Trigger is not responding: 
Make sure that your GPI control cable is properly connected and the RS232/422 adapter is firmly connected and receiving power. Make sure that GPI trigger is enabled as the active remote mode and that the remote checkbox is enabled. Check that the port selected for GPI is connected (in software) to the COM port that the 232/422 adapter is plugged into. 

Confirm that the DPS RS-232/422 adapter is in Slave mode.

Problem: The application is not responding to input device (mouse, keyboard) requests: 

Make sure that A4V is in stop mode when addressing commands such as enabling Monitor display, or E-E, etc. Some application elements do not respond during playback or record. Some elements also will not respond in "Scrub" mode. Re select "Scrub Off" to continue.


Known Limitations

RS422 VTR Emulation is not available. For this function, use the Perception Video Recorder software version 2.57or higher.

Rendered Editing functions (Split, Join, Duplicate) are not available in this release. 
References in the manual are for future inclusion. If these functions are required, use the Perception Video Recorder application.
 
Visual and Longitudinal Time Code do not reset to the clip start point when using Loop Mode.

A4V Playlists and Perception Batch Record Lists ( *.ply) are not compatible, nor are A4Vgenerated PLY files backward compatible with Perception.

PST (Perception Still Files), are not usable in playlists; use a single frame PVD if required.

Adobe Direct Compile Plugins do not support Speed changes.

The rendered effects (Crossfade and Fade) are not included in A4V. Use a third party editing 
package or the Perception Player Application.

If original source material timecode is required in an AVC, for example to convert to AVI for 
use in Adobe Premiere, video must be recorded during the batch capture process.

Cut and Paste functions are not accurate if there is a <gap> in the playlist. Only single items, or one linked clip (Audio and Video), can be copied at a time.

The MIDI connectors are not active.

The file naming convention of A4V and the Perception is a maximum of 27 characters, followed by a period ( . ), followed by a three character extension, i.e., 27.3. 

Spaces are not valid in clip names (i.e., AVC and PVD file names) in Windows NT 3.51.

Third Party Support

Included in the installation program are plugins to utilize the A4V more efficiently with Adobe Premiere 4.2. Video Action NT incorporates control of the A4V. Other software developers, such as in:sync, are developing their products to integrate fully with the Perception and A4V. Contact the companies involved regarding status and operation of the Perception and A4V with their products.

Hard Drives for Audio Storage

For optimum operation of the A4V, we recommend that you use a high performance SCSI disk drive, with a PCI SCSI host adapter (for example, the Adaptec 2940 series of products). Narrow SCSI works fine, but you can also use Ultra or Wide SCSI. 
An ISA SCSI adapter (such as the Adaptec 1540/1542) is not suitable, due to the performance limitations of the ISA bus.

As an alternative to SCSI disk drives, you may be able to use IDE disk drives. Most PCI 
chip sets/motherboards that have an onboard IDE adapter are capable of supporting a 

high-performance mode called "Bus Master IDE". This requires a special driver that is not part of 

Windows NT 3.51 or 4.0. Check with your PC or motherboard supplier to find out if a Bus Master 

IDE driver is available for your hardware and operating system. The manufacturer's Internet web 

site is a good place to look first. For general information about Bus Master IDE, Intel has an 

FAQ at http://www.intel.com/design/pcisets/busmastr.bmfaq.htm.

Without the Bus Master IDE driver installed, IDE drives are NOT suitable for use with A4V, 
regardless of the disk drive's performance. This is due to the manner in which the IDE chip communicates with the PCI bus. With the Bus Master IDE driver installed, we have had excellent 
results using IDE drives, and recommend this configuration if a PCI SCSI adapter cannot be accommodated due to PCI slot limitations.
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