User's Guide

System Overview 1-19
PCI Riser Slots
The system board has two PCI riser slots, each capable of supporting 64-bit/66-MHz PCI riser
cards.
PCI features:
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Bus speed up to 66 MHz
!
32 bit memory addressing
!
5 V/3.3 V signaling environment
!
Burst transfers of up to 512 Mbps
!
8, 16, 32, or 64-bit data transfers
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Plug and Play ready
!
Parity enabled.
Video
The system board uses an ATI RAGE XL PCI graphics accelerator with 8 MB of video SDRAM
that supports all standard IBM VGA modes. The embedded SVGA video subsystem supports:
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Pixel resolutions up to 1600 x 1200 under 2D and 1024 x 768 under 3D
!
CRT and LCD monitors up to 100 Hz vertical refresh rate
The system board supports disabling of the onboard video through the BIOS setup menu or when
a plug in video card is installed in any of the PCI slots.
SCSI Controller
The system board includes an embedded Adaptec AIC-7899W controller providing dual
Ultra160 Low Voltage Differential (LVD) SCSI channels.
The SCSI bus is terminated on the system board with active terminators that cannot be disabled.
The onboard device must always be at one end of the bus. The device at the other end of the
cable must also be terminated. LVD devices generally do not have termination built-in and need
to have a termination source provided. Non-LVDs devices generally are terminated through a
jumper or resistor pack on the device itself.