Alpha Microsystems Eagle 250 Manuel d'instructions télécharger pdf (Page 11)

Eagle 250 Upgrade Instructions, Rev. A00

Chapter 3 -

Upgrading Eagle 250

On-Board Memory

The AM-138-10 has two on-board SIMM (single inline memory module) expansion slots, which support

60ns DRAMs. Because the memory is located on-board, it can be accessed much faster than memory

accessed over the VME bus—i.e., AM-730 and AM-740 memory boards used with earlier CPU boards.

The following procedures describe how to install and remove the memory SIMMs, and set the memory

size jumpers. They are referred to in the appropriate place in the upgrade instructions in Chapters 6and 7.

Do not attempt install any SIMM until you reach the appropriate place in the installation procedure

for your configuration.

ELECTRONIC EQUIPMENT HANDLING PRECAUTIONS

While your computer's hardware is exposed and the AC power cord is unplugged, the

components are vulnerable to damage caused by static discharge. Your body and clothing are

capable of storing an electrical charge that can damage or destroy unprotected electronic

components. Before you handle any computer hardware, make certain your work area is properly

protected against static discharge. There are a number of commercially available static protection

devices, like the wrist strap shown below, designed specifically to protect your equipment from

harmful static discharge.

Figure 3-1: ESD Wrist Strap

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Alpha Microsystems Eagle 250 Manuel d'instructions Page 11