EtherTalk Interface Card Preliminary Note

EtherTalk™ Interface Card Preliminary Note Final Draft 5{29/87 Apple User Education Copyright© 1987 Apple Computer, Inc. All rights reserved. Ether'Ialk Interface Card Preliminary Note 9 APPLE COMPUTER, INC. This document and the product described in it are copyrighted, with all rights reserved. Under the copyright laws, this document may not be copied, in whole or part, without written consent of Apple Computer. The same proprietary and copyright notices must be affixed to any permitted copies as were affixed to the original. This exception does not allow copies to be made for others, whether or not sold, but all of the material purchased may be sold, given, or loaned to another person. Under the law, copying includes translating into another language or format © Apple Com,Puter, Inc., 1987 20525 Mariam Ave. Cu_pertino, California 95014 (408) 996-1010 Apple, the Apple logo, and AppleTalk are registered trademarks of Apple Computer, Inc. EtherTalk, A/UX, .and Macintosh are trademarks of Apple Computer, Inc. Ethernet is a registered trademark of Xerox Corporation. Nubus is a trademark of Texas Instruments. Tlie information in this document reflects the current state of the product. Every attempt has been made to verify the accuracy of this mformation, however, it is subject to change. Preliminar1 notes are released in this form to provide the development commumty with essential information in order to facilitate work on third-party products. Apple Computer Confulential i May 29, 1987 Etheflalk lnterfaa Card Preliminary Note Table of Contents iii iii 1 1 List of Figures List of Tables Introduction Product Overview 2 3 Where to Find Additional Information Network Architecture, Protocols, and Interfaces EtherTalk Card Media Access Method Media Accessc.d by the EtherTalk Card Operating Systems and Drivers EtherTalk Card Hardware Description 4 4 5 5 7 7 8 9 10 11 12 Local Memory Address Assignments NIC Register Addresses Programming Guidelines Initialization Procedure Receive Buffer Ring Overflow Procedure Packet Transmission Apple Computer Confuiential ii May 29, 1987 EtherTalk Interface Card Preliminary Note List of Figures 3 5 6 7 Figure 1. OSI Layers Figure 2. EtherTalk Card Architecture Figure 3. Hardware Model Figure 4. Address Assignments List of Tables 8 9 Table 1. Page 0 Address Assignments (PSl=O, PSO=O) Table 2. Page 1 Address Assignments (PSl=O, PSO=l) Apple Computer Con[ulential iii May 29, 1987 Ethefl'alk Interface Card Preliminary Note Introduction This document is intended for application developers writing communication software for Local Arca Networks (LANs) using the Institute of Electrical and Electronics Engineers (IEEE) 802.3 standards. The document contains programming information for the EtherTalk Interface CanfTM. It is assumed that programmers developing applications for networking environments arc familiar with the software environment they will use. Some familiarity with LANs is also assume…