AE6 Hardware External Reference Specification Version 1.0 October, 1986 Richard Hausman Mark Hoke 3Com Corporation 1365 Shorebird Way P.O. Box 7390 Mountain View, California 94039 USA AE6 External Reference Specification Contents Page Introduction 2 Overview Resources 3 Architecture 3 Network Interface Controller 3 Local Memory 3 Address Assignments 4 NIC Register Addresses 5 Technical Specifications NuBus line usage Voltage Tolerance Isolation Voltage Power Dissipation Temperature Variation Humidity Transceiver Selection; BNC Mode External Transceiver Mode Jumper Pin Block BNC Pin Assignments 15 Pin D Connector diagram 15 Pin D Connector signals 6 6 6 6 6 6 7 7 7 7 8 8 Programmatic Guidelines Programmatic Recommendations and Notes 9 Recommended Programming Sequences: Initialization Transmit Receive 10 AE6 Block Diagram 3Com Corporation - Proprietary and Confidential AE6 External Reference Specification 11 12 13 page 1 of 13 10/07/86 AE6 External Reference Specification Contents Page Introduction 2 Overview Resources 3 Architecture 3 Network Interface Controller 3 Local Memory 3 Address Assignments 4 NIC Register Addresses s Technical Specifications NuBus line usage Voltage Tolerance Isolation Voltage Power Dissipation Temperature Variation Humidity Transceiver Selection: BNC Mode External Transceiver Mode Jumper Pin Block BNC Pin Assignments 15 Pin D Connector diagram 15 Pin D Connector signals 6 6 6 6 6 6 7 7 7 7 8 8 Programmatic Guidelines AE6 Programmatic Recommendations and Notes 9 Recommended Programming Sequences: Initialization Transmit Receive 10 11 12 Block Diagram 13 3Com Corporation - Proprietary and Confidential External Reference Specification AE6 page 1 of 13 10/07/86 Introduction; The AE6 is a non-intelligent Ethernet adapter for the Apple NuBus personal computer. It makes use of a 3 chip LAN chipset from National Semiconductor Corp. The 3 chips are a Network Interface Controller (NIC), Serial Network Interface (SNI), and a Coax Transceiver Interface (CTI). This document provides both technical specifications for the adapter card and programatic guidelines specific to the AE6 implementation. The document may be used in conjunction with National's specification document titled DP8390/NS32490 Network Interface Controller (preliminary edition dated July, 1986). 3Com Corporation - Proprietary and Confidential AE6 External Reference Specification page 2 of 13 10/07/86 Qyeryiew Resources; * 16K bytes of RAM * 32K bytes of ROM * Apple NuBus interface * * * on-board 'Thin Net• transceiver multipacket buffering 'Thick Net• tranceiver connection Architecture: The AE6 is a low cost Ethernet adapter designed to provide the Apple PC to Ethernet connection. It supports back to back packet reception with multi-packet buffering using a 16K byte dual ported local memory. The adapter is structured to allow host access for fault isolation. Network Interface Controller: The Netw…

EtherTalk' Preliminary Note Final Draft; Working Draft 3 - October 15, 1987 Communications & Networking Apple Technical Publications Engineering Part No. 6588279 Copyright© 1987 Apple Computer, Inc. All rights reserved. CONFIDENTIAL APPLE COMPUTER, INC. This manual is copyrighted by Apple, with all right reserved. Under the copyright laws, this manual may not be copied, in whole or in part, 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 translation into another language. ©Apple Computer, Inc., 1987 20525 Mariani A venue 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. NuBus™ is a trademark of Texas Instruments. Ethernet® is a registered trademark of Xerox. Simultaneously published in the United States and Canada. Notice The information in this document reflects the current state of the product. Every effort has been made to verify the accuracy of this information; however, it is subject to change. Preliminary Notes are released in this form to provide the development community with essential information to work on compatible third-party products. EtherTalk Preliminary Note Apple Confidential Table of Contents Page Section Preface i i i You Should Know ... Document Contents Suggested Reading Chapter 1 1 2 2 2 3 AppleTalk AppleTalk Implementations LAP Functions Using EtherTalk Possible Applications Chapter 2 4 6 6 8 8 8 9 9 9 10 10 11 12 13 14 14 14 14 15 15 15 16 Introduction EtherTalk Overview Introduction Device Files 'adev' and 'cdev' Control Panel Device File AppleTalk Device File The 'adev' and 'atlk' Resources The LAP Manager INIT Resource Calls to the 'adev' Resource The GetADEV Call The SelectADEV Call Calls to the 'atlk' Resource The Alnstall and LWrtlnsert Calls The LWrtGet, AShutdown, and LWrtRemove Calls The LAP Manager AppleTalk Selection Installing the AppleTalk Selection Intranode Delivery Packet Reception AppleTalk Address Resolution Protocol (AARP) AARP Functions The Ethernet Driver Opening the Ethernet Driver Transmission and Reception Fina/Draft TOC-1 Table of Contents EtherTalk Preliminary Note Chapter 3 17 17 18 18 19 19 20 20 21 21 Calls to the LAP Manager Introduction Calling the LAP Manager LAP Manager Functions LWnlnsert (DO =2) LWnRemove (DO= 3) LWrtGet (DO= 4) LSetlnUse (DO= 5) LGetSelfSend (DO = 6) LRdDispatch (DO = 1) LGetATalklnfo (DO= 9) LAARPAttach (DO = 7) LAARPDetach (DO = 8) Chapter 5 27 27 28 28 28 28 28 28 29 29 29 29 30 30 30 32 33 33 35 Calls to the 'adev' File Introduction The 'adev' File Contents The 'adev' and 'atlk' Resources Calls to the 'adev' Resource The GetADEV Call (DO= 101) Status-flag Byte The SelectADEV Call (DO = 102) Calls to the 'atlk' Resource…

Macintosh OS Ethernet Driver Design Specification Proposal Alan B. Oppenheimer May 18, 1987 The following is a proposal for a Macintosh Ethernet driver. It is envisioned to be useable for any Ethernet implementation (card, SCSI device, etc.). The interface is such that it should also be applicable to other networks (e.g. Token Ring) with little or no changes. This proposal is for a general-purpose Ethernet driver, and does not address the issue of Apple Talk protocols running on Ethernet hardware. It conforms to IEEE 802.2 Type 1 service. Macintosh network developers are familiar with the Apple Talk driver interface; this interface is patterned directly after that. See the Apple Talk Manager chapter in volume 2 of Inside Macintosh for data structure details. Opening the Ethernet ddyer: The Ethernet driver is opened through a device manager Open call, indicating the slot (for a Mac II) in which the Ethernet card is installed. The driver is initially opened in "Apple Talk" mode. In this mode, packets sent by the driver are restricted to a maximum of 768 bytes. This is big enough to encapsulate AppleTalk packets, and allows more of a shared buffer pool to be allocated for packet reception. The driver can be changed to "general" mode, where it will transmit any valid Ethernet packet, through a control call defined below. The name of the Ethernet driver is '.ENEr. Commands to the Ethernet driver: Commands to the Ethernet driver are specified by means of Device Manager Control calls, with arguments passed in the queue element starting at CSParam. The following is a list of commands: EAttachPH: attach a "protocol handler" to the driver. Arguments are a two-byte protocol type and a handler address. The handler will be called (see "protocol handlers" below) when a packet of its type is received. If the protocol handler address is zero, a "default" protocol handler will be supplied by the driver which will enable the caller to issue standard read calls for that protocol type (see the ERead call). Note: to attach (or detach) a handler for 802.3 (which use protocol types O through $5DC), specify protocol type zero. EDetachPH: detach (remove) the protocol handler for the given protocol type. All pending reads are aborted with an error. EWrite: write out a packet on the Ethernet. The only argument is a WDS (write data structure) pointer. The WDS is a series of length/pointer pairs, terminated by a zero length. The data is "gathered" from each of the WDS entries, in the order provided. The first entry must start with the destination address (6 bytes for Ethernet), and then contain 6 unused bytes (in the Ethernet case) followed by the two-byte protocol type field. Data may then follow if desired. Ethernet Driver - DRAFT Apple Confidential Page 1 If the total length of the packet is too big (greater than 1514 bytes if "general", or 768 bytes if "AppleTalk" mode) an error is returned. If the total length of the packet is too small (less than 60 bytes for Ethe…

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…

3Com Ethernet Card Incomin~ Inspection Verification Dia~nostic Tool. vers. 31 Oct '88 The program ETestTool performs physical link level packet transmission and reception between multiple cards on a single machine. The current version allows for multiple machines to perform this test while sharing the same network. In this way, the collision detection and retransmission functionality is verified. Errors detected by the Network Interface Controller (NIC) are timestamped and reported to the screen display. The current version of ETestTool runs as an MPW tool using MPW 2.0 shell or greater. Due to it's UNIX-like structure, the tool may be easily ported to run under A/UX, if desired. This program only reports the statistics of network activity; there is little interpretation of card "Pass" or "Fail" done by the program. As such, one should be familiar with the NIC documentation in order to interpret many of the subtle problems that may exist on a card. The following errors are timestamped & reported to the Macintosh II screen and can be optionally saved to a disk file: • Card RAM failure • 3Com board rework failure • Slot manager failure • CRC, Frame alignment, FIFO overrun errors • FIFO underrun errors • Missed packets due to buffer overflows • Packets lost without an error status reported on either the transmjtter or receiver NIC / In addition, the following occurrences are tallied: • Total packets sent • Number of packet transmissions lost or corrupted • Average number of retries per packet transmission • Number of packets received with CRC errors and/or frame alignment errors • Number of packets missed due to buffer overflow • Number of FIFO overruns and underruns • Number of excessive collisions, out of window collisions • Number of carrier sense lost & collision detect heatbeat failures • Number of transmission timeouts • Number of multicast packets received (none are currently sent by the program) Startin~ the Verification Test Copy the file named ETestTool into the folder which contains the MPW 2.0 (or greater) Shell application. After double-clicking the MPW shell icon to start that application, select the New menu item from the File menu and name the window as you would like the ETestTool result file to appear. In this new window type the following, being certain to use the enter key at the end: ETestTool The test will automatically search for valid etherTalk cards, and will echo each card's slot number. After checking RAM size and verifying the RAM, the test for the 3Com rework is run. Failures are noted before running the packet transfer test. After the rework test, packets are sent from card to card, and errors are noted as they occur. To get the current error accumulatrion status and to pause, hit the mouse button. Press the mouse button again to continue testing. The cursor will spin a quarter turn for every 125 packets sent. To stop testing, simultaneously press the Command (Apple icon) and the period keys. The results may then be…

•~ 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…

EtherTalk Packet Formats - Draft Proposal May 18, 1987 Apple Network Systems Development Scope: this document specifies details of AppleTalk packets sent on Ethernet. Details: AppleTalk packets on Ethernet are sent using Ethernet protocol type $8098. They contain the standard 1~-byte Ethernet header (destination, source, type) followed by the full AppleTalk packet as defined in Inside AppleTalk. Specifically, an AppleTalk packet consists of the three-byte ALAP header (ALAP destination, source, type), followed by the ALAP data field, the first two bytes of which must be the ALAP data field length (the high six bits of the length field are ALAP protocol-dependent). If the packet is being broadcast, the ALAP destination must be $FF. Ethernet packets have a minimum size of 60 bytes. Including the Ethernet header, an EtherTalk packet could be as small as 19 bytes. Thus small EtherTalk packets must be padded to 60 bytes in length. The pad bytes should all be zeroes. Note that the receiving node can determine the actual packet length from the ALAP data field length bytes. The maximum size of an EtherTalk packet is 603 + 14, or 617 bytes. Ethernet Oestinatio '' Ethernet Source Ethernet rotocol T e $8098 ALAP dest ALAP source ALAP type LAP data length ALAP data Pad flf needed) May 18, 1987 EtherTalk Draft -- Apple CONFIDENTIAL 1