Installation guide

For more information about the jumpers, see the PBXGB-AA/CA PCI

Graphics Option Owner’s Guide provided with the card.

• X Server DMA write operations must be disabled for some conﬁgurations

Some conﬁgurations of PowerStorm 3D30 cards on Compaq EBM2n and

EBM4n SBCs require that you disable X Server direct memory access

(DMA) write operations. Speciﬁcally, you must disable these operations

if there are multiple PowerStorm 3D30 cards in the system, or if any

PowerStorm 3D30 graphics card is installed behind the PCI-PCI bridge

(PPB).

3.6.3.3 General Restrictions

The Tru64 UNIX operating system does not support the operator control

panel or watchdog timer. These server management features are supported

only in the hardware and ﬁrmware.

3.6.4 Hardware Conﬁguration for DMCC Eight-Headed Graphics

Systems

This section describes how to conﬁgure a Modular Computing Components

(DMCC) system to run eight-headed graphics under the Tru64 UNIX

operating system.

You can conﬁgure DMCC platforms that contain a EBM2n-AZ Alpha

PICMG single-board computer (SBC) and multiple PowerStorm 3D30

graphics cards to run multiheaded graphics, controlling up to eight monitors

at a time.

3.6.4.1 Hardware and Software Requirements

Running eight-headed graphics on a DMCC system requires the following:

• An EBM2n-AZ Alpha PICMG SBC and eight PowerStorm 3D30

graphics cards within a fully conﬁgured DMCC system.

• A DMCC backplane and enclosure with at least 10 PCI slots, 512 MB

main memory, a DMCC-qualiﬁed Ethernet card, and all the other storage

and I/O options normally required for such a system. See the DMCC

Order Conﬁguration Guide, which is available on the Compaq OEM

Web site at:

http://www.digital.com/oem/

• The SBC occupies a CPU slot and the graphics cards must occupy eight

PCI slots.

• You must be running Tru64 UNIX Version 4.0E or higher, and you must

be running the latest DMCC SRM code from Version 5.2 or higher of the

Processor-Speciﬁc Notes 3–11