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8. Select REG_DWORD for the Data Type, and then select OK.
9. Type 1 into the Data box.
10. Set the Radix value to Hex, and then select OK.
11. Exit from the Registry Editor and restart the system.
Enabling Bus Mastering for IDE/ATAPI Devices
Your system shipped with bus mastering for IDE/ATAPI devices enabled. If you reinstall
Windows NT 4.0 and Service Pack 3 software, you should enable IDE/ATAPI bus mastering.
NOTE If you have a CD-Recorder drive installed, do not enable IDE/ATAPI bus mastering. The CD-
Recorder drive is incompatible with IDE/ATAPI bus mastering.
To enable IDE/ATAPI bus mastering:
1. Ensure that the operating system, Service Pack 3 software, and QFE update software
(
QFE_NTW) are installed.
NOTE The QFE update software includes an updated ATAPI device driver that should be installed
after Service Pack 3.
NOTE For reasons of system performance, if a TR-4i tape drive or a Zip drive is installed, do not
enable DMA use on the IDE channel to which the drive is connected. A TR-4i tape drive or
Zip drive is usually connected to Channel 0 when installed at the factory.
2. Insert the Windows NT 4.0 Service Pack 3 CD-ROM into your system’s CD-ROM drive.
3. In Explorer or File Manager, navigate to the \
SUPPORT\UTILS\I386 directory.
4. Double-click
DMACHECK.EXE. The ATAPI DMA support dialog displays.
5. The Current DMA Usage boxes indicate which channels have IDE/ATAPI devices. For
each channel with an IDE/ATAPI device, click Enabled; then click OK.
6. Restart the system.
Installing the ESS Maestro-2 PCI Sound Adapter Driver
To install the ESS Maestro-2 PCI sound adapter driver:
1. Go to Start/Settings/Control Panel/Multimedia.
2. Select the Devices tab, and then click the Add button
3. Select Unlisted or Updated Driver, and then click OK.
4. Insert the disc containing the ESS sound driver into the CD-ROM drive.
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