3

Memory (16 x 72 bit SIMMs)

RAS/CAS

Address

UltraSPARC

 

UltraSPARC

module

 

module

 

 

 

Control

Address

Data

Data

Address

 

Bootbus

 

controller

controller

 

 

 

 

 

 

 

Bootbus

Control

Address

On-board devices

Data (8) controller

Data

Centerplane Connector

Figure 3-3CPU/Memory Board Simplified Block Diagram

3.4.1Removing a Board

3.4.1.1Removing a Board from a Powered On System

Caution – Remove a board from a powered on system only after the ASR

!software has disabled the board. If a board has not been disabled by the ASR software, then the operating system should be halted and the system powered off prior to board removal. See Chapter 12, “Powering Off and On” and then see Section 3.4.1.2, “Removing a Board from a Nonpowered On System.”

3-6

Ultra Enterprise 6000/5000/4000 Systems ManualNovember 1996

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Image 54
Sun Microsystems 6.0005E+11 manual Removing a Board from a Powered On System