Inside AppleTalk Second Edition 1990
Inside AppleTalk, second edition, is Apple Computer's specification of the AppleTalk network protocols, by Gursharan S. Sidhu (technical director), Richard F. Andrews and Alan B. Oppenheimer (staff engineers) of Apple's Network Systems Development group. It was published by Addison-Wesley in the Apple Communications Library, copyright 1990 by Apple Computer, Inc., ISBN 0-201-55021-0. The hosted scan is of the fourth printing, January 1993.[1] Its pages are numbered by chapter (1-1, 2-1 and so on).[2]
Contents
[edit | edit source]Page numbers are from the book's contents list.[3]
- Introduction, p. I-1
- Part I, Physical and Data Links
- 1 LocalTalk Link Access Protocol, p. 1-1
- 2 AppleTalk Address Resolution Protocol, p. 2-1
- 3 EtherTalk and TokenTalk Link Access Protocols, p. 3-1
- Part II, End-to-End Data Flow
- 4 Datagram Delivery Protocol, p. 4-1
- 5 Routing Table Maintenance Protocol, p. 5-1
- 6 AppleTalk Echo Protocol, p. 6-1
- Part III, Named Entities
- 7 Name Binding Protocol, p. 7-1
- 8 Zone Information Protocol, p. 8-1
- Part IV, Reliable Data Delivery
- 9 AppleTalk Transaction Protocol, p. 9-1
- 10 Printer Access Protocol, p. 10-1
- 11 AppleTalk Session Protocol, p. 11-1
- 12 AppleTalk Data Stream Protocol, p. 12-1
- Part V, End-User Services
- 13 AppleTalk Filing Protocol, p. 13-1
- 14 Print Spooling Architecture, p. 14-1
- Appendix A: LocalTalk Hardware Specifications, p. A-1
- Appendix B: LLAP Access Control Algorithms, p. B-1
- Appendix C: AppleTalk Parameters, p. C-1
- Appendix D: Character Codes, p. D-1
- Glossary, p. G-1
- Index, p. Index-1
What it settles
[edit | edit source]Appendix A is the one part of the book with hardware content. It corresponds to Apple document 062-0190-B.[4]
- Signalling: FM-0 (biphase space) bit encoding with a nominal 4.34 µs bit cell, SDLC framing, RS-422 balanced drivers and receivers, 230.4 kbit/s over up to 300 m. The preferred implementation uses a Zilog 8530 SCC, whose hunt bit and missing-clock detection give the carrier-sense indications.
- Connection module: a transformer, a DB-9 or DIN-8 connector on a 460 mm cable, and two 3-pin miniature DIN connectors (similar to Hosiden TCP8030-01-010), each with a coupled switch that puts a 100 Ω termination resistor (R2) across the line when only one connector is used. The other parts are R3 and R4 (1 kΩ) for receiver noise immunity, R5 (1 kΩ) and C1 (0.1 µF) to isolate the device frame grounds, and R1 (1 MΩ) as a static drain for the cable shield.
- Pin mapping: RXD+ on DB-9 pin 8 / DIN-8 pin 8, TXD+ on 4 / 6, RXD− on 9 / 5, TXD− on 5 / 3.
- Transformer: 1:1 ratio with electrostatic shielding; core Siemens B65651-K000-R030 or equivalent; magnetising inductance 20 mH minimum; leakage inductance 15 µH maximum; capacitance 5 pF maximum; windings of #32 AWG wire.
What this document does not contain
[edit | edit source]It is a protocol specification. Apart from Appendix A it contains no hardware detail, no service procedures and nothing about specific Apple products' network ports.
Pages that cite this document
[edit | edit source]
Download: Inside AppleTalk Second Edition 1990.pdf
References
[edit | edit source]- ↑ Gursharan S. Sidhu, Richard F. Andrews and Alan B. Oppenheimer, Inside AppleTalk, 2nd ed. (Addison-Wesley, 1990; fourth printing 1993), title page and copyright page (PDF pp. 6-7).
- ↑ Open Library, Inside AppleTalk, record OL1596597M, from Library of Congress catalogue data ("1 v. (various pagings)"). Retrieved 2026-09-30.
- ↑ Sidhu, Andrews and Oppenheimer, Inside AppleTalk, 2nd ed., Contents (PDF pp. 8-19).
- ↑ Sidhu, Andrews and Oppenheimer, Inside AppleTalk, 2nd ed., Appendix A, LocalTalk Hardware Specifications, pp. A-1 to A-8 (PDF pp. 516-523).