NEC PowerMate VT 300 Series Release Notes 11
Windows 95 Issues
The following material describes information specific to systems running the
Microsoft
®
Windows 95
®
operating system.
Controlling CD Audio
CD audio volume is not controlled by the Windows 95 taskbar Volume Control.
To control CD audio volume, access your CD player program. Move the volume
slider bars up or down to increase or decrease CD audio volume.
Configuring the System for PIIX4 Support
The following support limitations apply to PIIX4 (PCI ISA IDE Xcelerator).
Reconfiguring Ultra DMA Support
The PCI IDE interface on the PowerMate VT 300 Series system supports the
ATA ULTRA DMA/33 interface. NEC configured the system with the PIIX4
component released from Intel Corporation. However, standard versions of
Windows
®
95 released prior to the release of PIIX4 do not recognize the PIIX4
as capable of supporting ULTRA DMA/33.
Standard versions of Windows 95 require the addition of several information
files (.INF files) for the support of PIIX4 features. NEC already includes these
.INF files in the preinstalled software that comes with your system. NEC
recommends that customers use the version of Windows 95 that is included with
their system.
Note:
NEC recommends that customers use the
version of Windows 95 that is included with their system
because this version is already configured for Ultra DMA/33.
When users install their own version of Windows 95, ULTRA DMA/33 does
not function without the addition of these files. These .INF files can be added to
a new install of Windows 95 by using the NEC OS Restore CD. This results in
full ULTRA DMA/33 support. To add the files, run the OS Restore program in
the Windows operating system. Select the option to install PIIX4 support.
Determining IDE Device Compatibility
The new PIIX4 component contains a small change in the IDE interface. This
change to lower voltage levels on one signal has no effect on most of the IDE
hard drives on the market. A small number of older drives fail to function with
this new setting.
