Etherstreamer MC32
   C14 Connector
Microcode Secrets (Level features)
Etherstreamers Under W95
Etherstreamer Under NT4
ADF Sections

DP8392CN MDIP package DP8392C Data Sheet
  DP8392C Coaxial Transceiver Interface (CTI) is a coaxial cable line driver/receiver for Ethernet/Thin Ethernet (Cheapernet) type local area networks. The CTI  consists of a Receiver, Transmitter, Collision Detector, and a Jabber Timer.

Peter Wendt 
  "The FRU 74G0865 is in fact the Etherstreamer MC32 (Ethernet card) with 3 physical interfaces: RJ45 UTP, BNC Coax and "the odd looking female" is a mini-centronics 14-pin AUI for Thickwire - as used on some Apples. This is the port that is present as 15-pin Sub-D on most "generica" Ethernet cards. "

> connect the early PowerMacs to Ethernet. The most common is a "Y" type adapter that has the friendly net connector (C14?) on the bottom, and two RJ45s at the top. 

The "Y" type adapter mentioned is a "Farallon Etherwave AAUI Transceiver". They call the mini centronics "C14" connector an "AAUI" connector.

 10BT Port____________ ____________ ______//____ _____ etc....
                      Y            Y     //     Y
                     NIC          NIC          NIC
 

> You can chain several devices on one 10BT port by using regular 10BT cables and going from one adapter to the next using the RJ45 ports. Obviously performance isn't going to be optimal. The little collision LEDs on the "Y" units light up frequently.  Other connectors include a wireless tranceiver, one that adapts the C14 to AUI, and other hub type deals that act as printservers for AppleTalk printers and LJs with serial ports.

Current Microcode Flash Level
                                 CURRENT    PREVIOUS
 - IBM EtherStreamer MC 32         C0        B3,AC
 - IBM Dual EtherStreamer MC 32    C0        B3

Microcode Levels:
   The microcode has a common base and evolves; therefore, changes are cumulative. Some changes are based on adding new adapters to the Streamer family (adding PCI adapters, multi port adapters). Significant functional changes between levels are as follows.

AC --> B3     Fixes to ethernet full duplex operation
B3 --> B4     Corrected error code 0800 (ICD bus parity error)
B4 --> C0,C3  Reprioritized handling of frames based on frame types
                    to prevent timeouts in managed networks
C4 --> C7     Fix to RIPL
C7 --> CB     Changes how AutoSense works (see NOTE below)
CB --> CC     Adds TRFDX (token-ring Full Duplex) support - "BETA"
CC --> CG     Changes to TRFDX, fix a cable sense problem in 'CC',
                    fixes to RPL on PCI adapters
CG --> D0     Minor changes for FDX Draft 4 compatability

NOTE: To establish compatability with some speed-detecting hubs (ie. 3Com and Synoptics) the AUTOSENSE algorithm has been changed. Microcode prior to 'CB' would allow an adapter set to AUTOSENSE, which had a 'saved speed', to be the first to open on a ring; this is no longer the case. It is still  recommended that any servers have their adapters set to fixed speeds (16 or 4).

 8FA0  IBM LANStreamer MC 32 Adapter 
 8FA2  IBM Auto LANStreamer MC 32 Adapter 
 8FA8  IBM EtherStreamer MC 32 Adapter 
 8FAA  IBM Dual Auto LANStreamer MC 32 Adapter 
 8FAB  IBM Dual EtherStreamer MC 32 Adapter 
 8FA4  IBM LANStreamer MC 16 Adapter 

 Works great with a Auto LAN MC32 in my TR-Network under Win95.  Improves data-thoughput quite a lot. Notify that you should use an IRQ above 8 for the 32-bit adapters. 

 Q156324  Differences in Slot #s 
 Q167632  Failures after applying SP2 (Apply SP3 instead!) 

Adapter Media Type Selection
   Select which cable type is connecting the adapter card to the network.  The choices are Autosense, in which the adapter determines the media, AUI, UTP, or Coax.
   <"Autosense" >, UTP, COAX, AUI

System Interrupt Level
  Interrupt level that  adapter uses to interrupt the system unit.  Interrupt level 3 is preferred, but the adapter can operate on any of the four levels if necessary.
   <"Interrupt  3">, 2, 10, 11

Micro Channel I/O Address
   Select the micro channel I/O address range of the adapter.  For micro channel I/O cycles, this Ethernet Network adapter is selected when the micro channel I/O address is within a 256 byte region. If more than one adapter is used in your computer, each adapter must be assigned a separate I/O address range.
  <"1C00-1CFF">, 2000-20FF, 2400-24FF, 2800-28FF, 2C00-2CFF, 3000-30FF, 3400-34FF, 3800-38FF, 3C00-3CFF, 4000-40FF, 4400-44FF, 4800-48FF, 4C00-4CFF, 5000-50FF, 5400-54FF, 5800-58FF, 5C00-5CFF, 6000-60FF, 6400-64FF, 6800-68FF, 6C00-6CFF, 7000-70FF, 7400-74FF, 7800-78FF, 7C00-7CFF, 8000-80FF, 8400-84FF, 8800-88FF, 8C00-8CFF, 9000-90FF, 9400-94FF, 9800-98FF, 9C00-9CFF, A000-A0FF, A400-A4FF, A800-A8FF, AC00-ACFF, FC00-FCFF

Streaming Data Select
   This Ethernet Network Adapter can operate with or without Data Streaming.  For best performance, enable streaming.
  <"Enabled">, Disabled

Fairness
   Whether adapter shares bus equitably with other devices or retains control of the bus as needed.
    < "Fairness ON " >, Fairness OFF

Arbitration Level
   This adapter can operate on one of thirteen arbitration levels: 1, 2, 3 or 5 thru E. If more than one adapter is used in your computer, each adapter must be assigned a separate arbitration level.
    <"Level 1">, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E (Ed. Odd, but 4 is listed...)

Parity Enable/Monitor Feedback
   Micro Channel Parity Enable/Monitor Slave devices feedback signal: This Ethernet Network adapter provides the capability of generating and checking data and address parity.  In addition, this adapter also provides the capability of monitoring slave device's Selected Feedback Return Exception signals during DMA operations.
    <"Parity OFF/Monitor OFF">, Parity ON /Monitor OFF, Parity OFF/Monitor ON, Parity ON /Monitor ON