I PowerPC™ Microprocessor Common Hardware Reference Platform: I/O Device Reference LICENSE INFORMATION To the extent that Apple Computer, Inc., International Business Machines Corporation, and Motorola, Inc. (referred to as “the creators”) own licensable copyrights in the PowerPC Microprocessor Common Hardware Reference Platform: I/O Device Reference (including accompanying source code samples), the creators grant you a copyright license to copy and distribute portions of this document (including accompanying source code samples) in any form, without payment to the creators, for the purpose of developing original documents, code, or equipment (except integrated circuit processors) which conform to the requirements in this document and for the purpose of using, reproducing, marketing, and distributing such code or equipment. This authorization applies to the content of this specification only and not to the referenced material. This authorization does not give you the right to copy and distribute this document in its entirety. In consideration you agree to include for each reproduction of any portion of these documents or any derivative works the copyright notice as displayed below. You are responsible for payment of any taxes, including personal property taxes, resulting from this authorization. If you fail to comply with the above terms, your authorization terminates. The creators and others may have patents or pending patent applications, or other intellectual property rights covering the subject matter described herein. This document neither grants or implies a license or immunity under any of the creators or third party patents, patent applications or other intellectual property rights other than as expressly provided in the above copyright license. The creators assume no responsibility for any infringement of third party rights resulting from your use of the subject matter disclosed in, or from the manufacturing, use, lease, or sale of products described in, this document. Licenses under utility patents of IBM® in the field of information handling systems are available on reasonable and non-discriminatory terms. IBM does not grant licenses to its appearance design patents. Direct your licensing inquiries in writing to the IBM Director of Licensing, International Business Machines Corporation, 500 Columbus Avenue, Thornwood, NY 10594. Licenses under utility patents of Apple Computer, Inc., that are necessary to implement the specification set forth in this document are available on reasonable and non-discriminatory terms. Apple Computer, Inc. does not grant licenses to its appearance design patents. Direct your licensing inquires in writing to Mac OS Licensing Department, Apple Computer, Inc., 1 Infinite Loop, MS 38-LG, Cupertino, CA 95014. © Copyright Apple Computer, Inc., International Business Machines Corporation, Motorola, Inc. 1996. All rights reserved. Note to U.S. Government Users—Documentation related to restricted rights— Use, d…

Page - 1 Common Hardware Reference Platform Architecture Version 1.0 Change Notice October 2, 1996 Apple/IBM/Motorola - CHRP Board Apple/IBM/Motorola - CHRP Board 2 This paper presents a chronological list of all changes approved for the published version of the PowerPC Microprocessor Common Hardware Reference Platform: A System Architecture (CHRP). These changes are approved by the CHRP Board. These changes will be incorporated into the next version of the CHRP document at the next printing. Editorial Comments June 6, 1996 The following editorial comments have been received through June 6, 1996. ■ Page xx add a paragraph before the paragraph starting “Sample implemen- tations ...” to describe the use of this material by component manufacturers. “This document is one of those needed by vendors building chips and adaptors for use in these platforms. Component manufacturers must produce components which conform to this architecture.” ■ Change the second paragraph on page xxiii to read “Big-Endian numbering of bytes is used in this document, unless indicated otherwise. Numbering of bits starts at zero for the most significant bit and continues to the least significant bit, unless indicated otherwise.” ■ Change the third paragraph on page xxiii to indicate the table number. “Ty- pographical ... in Table i on page xxiii.” ■ Change the table number on page xxiii to be “Table i.” ■ Change the last sentence in the paragraph and change the list under 2.5.1.4 on page 18. This paragraph should now read as follows: “The description column ... Two documents are referenced extensively using an abbreviation in this description column. The abbreviations are as follows: [20] refers to the PowerPC Microprocessor Common Hardware Reference Platform: I/O Device Reference. Use this document for additional information on the annotated specifications. [23] refers to the Macintosh Technology in the Common Hardware Reference Platform. Use this document for specific physical, timing, and electrical requirements of the annotated specifications.” ■ Remove the two instances of the phrase “(see note 1)” in the Specifications column for the Pointing Device row in Table 2 on page 19. ■ Add the phrase “For 64-bit addressing option in HBs:” to the start of re- quirement 3-5 on page 29 and 227. Apple/IBM/Motorola - CHRP Board 3 Editorial Comments June 6, 1996 ■ Remove a redundant sentence in the last paragraph on page 37. This para- graph should read “Addresses in peripheral I/O Space from BIO+64 KB to BIO + (8MB - 1) are reserved for hardware use. HBs may treat ...” ■ At the bottom of page 37 add a note which should read as follows: “Software Implementation Note: When in the discontiguous I/O mode software should not put out an operation to Peripheral I/O Space which crosses a 32-byte boundary. Results from such operations are undefined.” ■ Change the table reference for requirement 3-18 on page 39 and 230 to “Ta- ble 7 on page 44.” ■ Add a new bullet under “S…

I PowerPC™ Microprocessor Common Hardware Reference Platform: A System Architecture Personal Use Copy - Not for Reproduction LICENSE INFORMATION To the extent that Apple Computer, Inc., International Business Machines Corporation, and Motorola, Inc. (referred to as “the creators”) own licensable copyrights in the PowerPC Microprocessor Common Hardware Reference Platform: A System Architecture (including accompanying source code samples), the creators grant you a copyright license to copy and distribute portions of this document (including accompanying source code samples) in any form, without payment to the creators, for the purpose of developing original documents, code, or equipment (except integrated circuit processors) which conform to the requirements in this document and for the purpose of using, reproducing, marketing, and distributing such code or equipment. This authorization applies to the content of this specification only and not to the referenced material. This authorization does not give you the right to copy and distribute this document in its entirety. In consideration you agree to include for each reproduction of any portion of these documents or any derivative works the copyright notice as displayed below. You are responsible for payment of any taxes, including personal property taxes, resulting from this authorization. If you fail to comply with the above terms, your authorization terminates. The creators and others may have patents or pending patent applications, or other intellectual property rights covering the subject matter described herein. This document neither grants or implies a license or immunity under any of the creators or third party patents, patent applications or other intellectual property rights other than as expressly provided in the above copyright license. The creators assume no responsibility for any infringement of third party rights resulting from your use of the subject matter disclosed in, or from the manufacturing, use, lease, or sale of products described in, this document. Licenses under utility patents of IBM® in the field of information handling systems are available on reasonable and non-discriminatory terms. IBM does not grant licenses to its appearance design patents. Direct your licensing inquiries in writing to the IBM Director of Licensing, International Business Machines Corporation, 500 Columbus Avenue, Thornwood, NY 10594. Licenses under utility patents of Apple Computer, Inc., that are necessary to implement the specification set forth in this document are available on reasonable and non-discriminatory terms. Apple Computer, Inc. does not grant licenses to its appearance design patents. Direct your licensing inquires in writing to Mac OS Licensing Department, Apple Computer, Inc., 1 Infinite Loop, MS 305-1DS, Cupertino, CA 95014. © Copyright Apple Computer, Inc., International Business Machines Corporation, Motorola, Inc. 1995. All rights reserved. Note to U.S. Government Users—Docu…

PowerPC Microprocessor CHRP binding 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 1 PowerPC™ Microprocessor Common Hardware Reference Platform (CHRP™) System binding to: IEEE Std 1275-1994 Standard for Boot (Initialization, Configuration) Firmware Revision: 1.7 [Approved Version] Date: September 23, 1996 September 23, 1996 Revision 1.7 [Approved Version] 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 September 23, 1996 Revision 1.7 [Approved Version] PowerPC Microprocessor CHRP binding PowerPC Microprocessor CHRP binding 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 3 Purpose of this PowerPC Microprocessor CHRP™ System binding This document specifies the application of Open Firmware to a PowerPC Microprocessor CHRP System, including requirements and practices to support unique hardware and firmware specific to the platform implementation. The core requirements and practices specified by Open Firmware must be augmented by system-specific requirements to form a complete specification for the firmware implementation of a PowerPC Microprocessor CHRP System. This document establishes such additional requirements pertaining to the platform and the support required by Open Firmware. Task Group Members The following individuals were members of the Task Group that produced this document: Rob Baxter, Motorola® Mitch Bradley, FirmWorks Steve Bunch, Motorola Bob Coffin, IBM® (editor) Ron Hochsprung, Apple® John Kingman, IBM Dr. Luan Nguyen, IBM John O’Quin, IBM Andy Rawson, IBM Mike Segapeli, IBM Trademarks The following terms, denoted by a registration symbol (®) or trademark symbol(™) on the first occurrence in this publication, are registered trademarks or trademarks of the companies as shown in the list below: Trademark Company AIX™ International Business Machines Corporation Apple Apple Computer, Inc. CHRP Apple Computer, Inc. Ethernet™ Xerox IBM International Business Machines Corporation Microsoft® Microsoft Corporation Macintosh™ Apple Computer, Inc. September 23, 1996 Revision 1.7 [Approved Version] 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 PowerPC Microprocessor CHRP binding Mac™ OS Apple Computer, Inc. Motorola Motorola, Inc. PowerPC International Business Machines Corporation Windows NT™ Microsoft Corporation Revision History Revision 0.1 07/27/95 Initial draft; limited distribution to CHRP AIM(Apple, IBM & Motorola) Team Revision 0.2 08/15/95 Initial draft with distribution to CHRP AIM Team for review. Revision 0.3 09/08/95 Distribution to CHRP AIM Team for review…