Asus P/I-P65UP8/CP6ND - Manual (Page 45)

ASUS P/I-P65UP8 User’s Manual 45
III. WINDOWS NT DRIVERS
III. WINDOWS NT
(Additional Information)
Important Additional Information
Enabling/Disabling Support Options
Once the SYMC8XX.SYS driver is installed, support for Ultra SCSI, PCI Cache
Line, and Prefetch Option are enabled or disabled using the Registry Editor.
CAUTION: Incorrect modifications to the registry can disable the system
Before making any changes to the registry, insure that you have an Emergency
Repair Disk available. An Emergency Repair Disk is created either during
Windows NT installation, or by running the RDISK program.
Use this procedure for enabling/disabling all support options:
1. Run the REGEDT32.EXE program (using either File, Run or through File
Manager).
2. Select the HKEY_LOCAL_MACHINE window.
3. Open the following folder tree: SYSTEM\CurrentControlSet\Services.
4. From this tree, open the Symc8XX folder, then the Device folder.
5. In the right-hand window, double-click on the Driver Parameter entry.
6. In the String Editor dialog box, do not change anything but the number just to
the right of the equal sign(s). The entry(s) should appear as follows:
FAST20_Support=1 for Ultra SCSI (Fast 20) enabled
FAST20_Support=0 for Ultra SCSI (Fast 20) disabled
Cache_Line_Support=1 for PCI Cache Line support enabled
Cache_Line_Support=0 for PCI Cache Line support disabled
Prefetch_Support=1 for Scripts Prefetch Option enabled
Prefetch_Support=0 for Scripts Prefetch Option disabled
NOTE: Enabled options only apply when the installed adapter can support
them.
7. Click OK.
8. Exit the Registry Editor program. Any change in this registry entry does not
take effect until the system is rebooted.