Motherboard Description
15

1.8.1 Resolutions supported

Table 1. Graphics Resolutions
Resolution
Supported by
1 MB DRAM
Supported by
2 MB DRAM Refresh Rate (Hz)
640x480x16 colors Yes Yes
640x480x256 colors Yes Yes 60,72,75,85
640x480x64k colors Yes Yes 60,72,75
640x480x16.7m colors No Yes 60,72,75
800x600x256 colors Yes Yes 56,60,72,75,85
800x600x64k colors Yes Yes 60,72,75
800x600x16.7m colors No Yes 60,72,75
1024x768x256 colors Yes Yes 43(IL),60,70,75,85
1024x768x64k colors No Yes 43(IL),60,70,75
1280x1024x16 colors Yes Yes 45(IL),60,72,75
1280x1024x256 colors No Yes 45(IL),60,72,75

1.8.2 Graphics Drivers and Utilities

Graphics drivers and utilities for Windows 3.11 and Windows 95 are provided on the foundation
software CD. These drivers come in a compressed form and are extracted by using an installation
utility. Also included is a Windows 3.1x control panel applet called Galileo which allows the user
to change the screen resolution, number of colors, and large or small fonts while in Windows.
Windows NT drivers are embedded in the O.S.
Graphics drivers for OS/2 2.11 and OS/2 WARP, MS-DOS applications such as AutoCAD and
Microstation, and driver updates for Windows 3.11 and Windows NT may be downloaded from the
Intel Applications Support BBS. Drivers for SCO UNIX are available from SCO.
1.9 Audio Subsystem (Creative Labs Vibra 16C)
The motherboard features a 16-bit stereo audio subsystem. The audio subsystem is based upon the
Creative Labs Vibra 16C (CT2505) multimedia Codec. The Vibra 16C provides all the digital
audio and analog mixing functions required for recording and playing of audio on personal
computers. The Creative Labs Vibra 16C is a single chip VLSI solution which integrates FM
synthesis, is Sound Blaster compatible and Roland MPU-401 UART mode compatible. Creative
Labs Vibra 16C also provides MPCII, Adlib, and Multimedia PC Level 2 compliance to meet all of
the requirements of today’s multi-media applications.
The Vibra 16C has been implemented as a Plug and Play motherboard device. This means that
there is a device node defined for the Vibra 16C and the BIOS must configure it. Although it is
not a Plug and Play device, the Vibra 16C is very flexible in that it accommodates a variety of I/O
addresses, DMA channels and interrupts.