SY-D6IBA2
Quick Start Guide
Do not edit your registry unless it is absolutely necessary. If there is an error in
your registry, your computer may become nonfunctional.
Using Windows NT SCSI Parameters
Follow the instructions below to enter the registry values that affect how the Windows NT SCSI manager
interprets the generic configuration information of SCSI device drivers. All SCSI host adapters installed in
your system are affected by the values you enter here. A list of valid values follows.
Note: The following value keys are case-sensitive and must be entered exactly as
shown.
∗ DisableTaggedQueuing – A nonzero value indicates that the SCSI host adapter disabled tagged
queueing for SCSI devices. The data type for this value is REG_SZ.
∗ DisableSynchronousTransfers – A nonzero value indicates that the SCSI host adapter is not to
initiate synchronous negotiations (but it may stall accept negotiations initiated by a SCSI target). The
data type for this value is REG_SZ.
∗ DisableDisconnects – A nonzero value indicates that targets are not permitted to disconnect during
the execution of a SCSI command. The data type for this value is REG_DWORD.
∗ MaximumLogicalUnit – This can limit the scan for connected devices on the SCSI bus. Valid values
are 1 to 8 If 1 is specified, the Windows NT SCSI manager assumes that no SCSI targets support
LUNs other than 0. Otherwise, LUNs from 0 to 8 are scanned during system initialization. The data
type for this value is REG_DWORD.
∗ Maximum SGList – Specifies the maximum number of scatter-gather elements. Valid values are 17-
255. The data type for this value is REG_DWORD.
To enter Windows NT parameters, follow these steps:
1 Select [Run] from the File menu (Windows NT 3.5x), or Run from the [Start] button (Windows NT
4.0).
2 Type regedt32 and press [Enter].
3 Open the registry list to the following location:
\HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\aic78xx\Parameters\Device
or
\HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\aic78u2\Parameters\Device
If the \Parameters\Device keys already exit, skip to step 8 below to begin entering values. If the keys
do not yet exist, you will need to create them by continuing with step 4.
