This document describes the procedures for upgrading an existing Silicon Graphics® CHALLENGE® or Onyx™ system to a POWER CHALLENGE™ or POWER Onyx™ system by installing the IP21 CPU board and IRIX™ 6.1 or later software. The IP21 board contains a 75-MHz or 90-MHz, 64-bit R8000 RISC chip set that features a tightly coupled, but physically separate floating point (FP) and integer units with supporting logic.
This manual was written for Silicon Graphics system support engineers (SSEs) and third-party field support groups responsible for product installation and testing.
This manual is divided into three chapters and two appendices:
| Chapter 1 | "Upgrade Overview" provides a summary of the IP21 features and components. | |
| Chapter 2 | "Installing the Upgrade" discusses how to install the upgrade. | |
| Chapter 3 | "Returning the Old CPU board" describes how to return the IP19 for proper credit. | |
| Appendix A | "Installing an External CD-ROM" shows how to connect a CD-ROM drive to the system to download software. | |
| Appendix B | "Running the BBCC Chip Tests" describes how to check the BBCC chip revision level through software. |
Be sure to read the following information before you begin installation.
 | Warning: Installation of these upgrades requires specific training and technical knowledge. These instructions are provided for use by Silicon Graphics system support engineers (SSEs) or other Silicon Graphics trained personnel only. This equipment utilizes electrical power internally that is hazardous if the equipment is improperly disassembled. |
 | Caution: This equipment is extremely sensitive and susceptible to damage caused by electrostatic discharge (ESD). ESD is an electrical discharge caused by the build-up of electrostatic potential on clothing and other materials. You must use proper ESD preventive measures. |
Follow these ESD-preventive measures:
Connect a ground strap to your wrist when installing and removing peripherals.
Be sure that you and all of the electrical equipment that you handle during this installation remain at a ground potential of zero to avoid damage from ESD.
Remove a board from its antistatic bag only when you are properly grounded with a ground strap, and only when you are working on the board or installing it.
Do not use an ohmmeter on a board.
These type conventions and symbols are used throughout this manual:
| Italics | Filenames, variables, IRIX command arguments, command flags, titles of publications, icon names. | |
| Screen type | Code examples, file excerpts, and screen displays (including error messages). | |
| Bold Screen type |
| |
| (Parentheses) | Following IRIX commands, they surround the reference page (man page) section where the command is described. | |
| [Brackets] | Surrounding optional syntax statement arguments. | |
| # | IRIX shell prompt for the superuser (root). | |
| <Angel brackets> |
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