EtherTalk And Alternate AppleTalk Reference

•~ MacintoshTll EtherTalk and Alte~ate AppleTalk Reference . Alpha Draft; Working Draft 1 - December 11, 1987 Communications & Networking Apple Technical Publications Engineering Part No. 6588279 - ·. · ·-~ 'T f . :. _:_;..,~ ! ;_'. S APPLE COMPUTER, INC. This manual is copyrighted by Apple, with all right reserved. Under the copyright laws, tlUs manual may not be copied, in whole or in pait, without the written consent of Apple Computer, Inc. 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 lent to another person. Under the law, copying includes tramlation into another language. C App1e Computer, Inc.. 1987 20525 Mariani Avenue Cupertino, California 95014 (408) 996-1010 Apple and the Apple logo are registered trademarks of Apple Computer, Inc. AppleTalk is a registered trademark of Apple Computer, Inc. NuBusn1 is a trademark of Texas Instruments. Ethernet® is a registered trademark of Xerox. Simultaneously published in the United States and Canada. Contents Flgur• and tabl• v Radio and televlslon Interference xx Preface You Should Know... vii Document Contents vii Suggested Reading vii Chapter 1 lntroducHon 1 AppleTalk 2 AppleTalk Implementations 3 LAP Punaions 3 Using EtherTalk 4 Possible Applications 5 Chapter 2 EtherTalk Overview 7 Block Diagram 8 Devic.e riles 'adev' and 'cdev' 9 Control Panel Device File 9 AppleTalk Device File 11 1be 'adev' and 'atlk' Resources 11 1be LAP Manager INIT Resource 12 Calls to the 1adeV' Resource 12 1be GetADEV Call 13 1be SelectADEV Call 14 Calls lO the 'atlk' Resource 15 The Alnstall and LWrtlnsert Calls 15 1be LWrtGet, AShutdown, and LWrtRemove Calls 17 The LAP Manager 18 AppleTalk Seleaion 19 Installing the AppleTalk Seleaion 19 Intranode Delivery 19 Packet Reception 19 AppleTalk Address Resolution Protocol (AA.RP) 20 MRP Functions 20 The Ethernet Driver 20 Opening the Ethernet Driver 21 Transmission and Reception 21 Chapter 3 Coll to th• 'adev' AJe 23 The 'adev' File Contents 24 The 'adev' and 'atlk' Resources 25 Calls to the 'adev' Resource 25 T<e GetADEV Call (DO• 101) 26 Status-flag Byte 27 The Select.A.DEV Call (DO• 102) 28 Calls to the 'atlk' Resow'c:e 28 The Aimta1l Call (DO • 1) 29 The AShutdown Call (DO • 2) 29 Chapter 4 Calla to th• LAP Manager 31 Calling the LAP Manager 32 LAP Manager Functions 33 LWrtinsert (DO • 2) 33 LWltRemove (DO • 3) 34 LWrtGet (DO • 4) 35 LSetlnUse (DO - 5) 35 LGetSeUSend (DO • 6) 35 LRdDispatch (DO • 1) 36 LGetATalklnfo (DO• 9) 36 LAARPAttach (DO • 1) 37 LAA.R.PDetach (DO - 8) 37 Chapter 5 MRP and Data Packets 39 AboutMRP 40 Protocol sets 40 Hardware Addresses 41 Protocol Addresses 41 Obtaining an Addres,, 42 MRP Functions 42 Packet Categories 42 EtherTalk Addresses 43 A.ARP Operation 43 The Address Mapping Table 43 II Contents Choosing an Address 44 Random Address Selection 44 Probe Pac:kefs 44 Response to Probe Packets 45 Avoiding Duplicate Tentative…