Instruction manual

AlphaServer 1000/1000A Supplement 1-1
1
Hardware Updates
Introduction
The model 5/xxx system hardware differs from that of previous models in
several respects. Memory modules are organized differently on the
system board, CPU card jumpers are located and set differently, beep
codes have been added, as well as new environment variables. The latest
revision of the motherboard does not contain an onboard graphics
controller.
Information in this chapter supersedes that in your Owner’s Guide.
Topics in this chapter include:
Memory Modules
CPU Card Jumper Settings
Beep Code Information
New environment variables
Onboard VGA removed
New Halt Button Functionality
Memory Modules
The system unit supports 16 single in-line memory module (SIMM)
connectors on the system board. The SIMM connectors are grouped in
four memory banks consisting of four memory modules. Figure 1-1
shows the memory banks and their memory module connectors.