14 NEC PowerMate 8100 Series Release Notes
PIIX4 Limitations
The following operating limitations apply to PIIX4 (PCI ISA IDE Xcelerator).
Reconfiguring Ultra DMA Support
The PCI IDE interface on the PowerMate 8100 Series system supports the latest
ATA ULTRA DMA/33 interface. In order to do so, the PIIX4 component that
was recently released from Intel Corporation was incorporated in the system.
However, standard versions of Windows
®
95 were released prior to the release
of PIIX4; these versions do not recognize the PIIX4 as capable of supporting
ULTRA DMA/33.
Several information files (.INF files) need to be added to standard versions of
Windows 95 so the operating system can incorporate PIIX4 features. NEC CSD
already includes these .INF files in the preinstalled software that comes with
your system. NEC CSD recommends that customers use the version of
Windows 95 that is included with their system.
Note:
NEC CSD 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 Select Install CD. This results in
full ULTRA DMA/33 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. If you have a concern about an older drive that you would like
to use with your PowerMate 8100 Series system, NEC CSD Technical Support
Services can help you determine if there will be a problem.
Recommended Resolutions for NEC
VistaScan USB Monitors
The following table lists the supported resolutions for NEC PowerMate Series
systems with 15-inch and 17-inch NEC VistaScan™ USB monitors.
!
CAUTION
Setting resolutions other than the rates listed in the following
table generates a “black” monitor screen.
