Dual LANStreamer MC 32

"Dual Wildwood"

@8FAA.ADF IBM Dual LANStreamer MC 32 Adapter
@8FAA.DGS IBM Dual LANStreamer MC 32 Adapter Diagnostics

194-208 IBM Dual LANStreamer MC 32 Adapter (HTML)
ZG94-0338 IBM Dual LANStreamer MC 32 Adapter (HTML)

e2qh2000.boo Dual LANStreamer MC 32 Installation and Testing Instructions

TRMDLS.EXE Option/Diagnostic/Driver Disk v2.0 (zipped image)
STRFLASH.EXE Flash Update Utility Diskette - Updated FDX microcode for DLS MC32.
Warning: Do not flash MCA DLS in a 520. Pull MCA DLS from system and flash in separate system. Flashing in the 520 can permanently damage the microcode on the DLC
STRS720.EXE Streamer Package for Server 720
Streamer Log Utility View message log maintained in flash memory

Streamers - General Information

Dual LANStreamer MC 32
Known Problems
Error Codes
ADF Sections

Based on content by William R. Walsh (original HERE).

Dual LANStreamer MC 32 "Dual Wildwood", FRU P/N 73G7140 / 73G5616 [P] [P]

Two Auto LANStreamers on the same PCB. Similar to the Dual EtherStreamer.

P1 MCA card edge
P2 RJ-45 TR "Port B"
P3 RJ-45 TR "Port A" (RPL port)
U14,53 Bel/IBM 60G3157
U17,106 73G7123 microcode flash
U26,51 73G2692 MPC
U30,60 63G9811 MCA interface
U36,42 AMD 73G1638 PLD
U37,52 50G7028 TR front end
Y1 40.0000 MHz osc (MCA BM)
Y2,3 49G3198/KF345A (32 MHz?) osc (TR)

U26,51 73G2692 MPC (Multi-Protocol Chip) contains a Token Ring and Ethernet MAC.

U30,60 63G9811 MCA bus master interface chip "Maunakea".

U13,50 (back) MCM6265CJ15 8Kx9 SRAM

U14,53 IBM 60G3157 / Bel S556-3001-04 These puppies clean up signals, making them more "square".

Unlike the Auto LANStreamer MC32, LANStreamer MC32 and the 8229 bridge TR interface card, there are no status LEDs of any sort on this adapter card.

Known Problems

Slot 8 Incompatibility in 8595 and 9595 (SF2223)
Failure to Obtain IP Address Via DHCP on Token Ring w/ SP2 (Q163383)

Error Codes

The 8-digit error codes on the display panel are 0281nnx0, where:

The first and last digit is always 0
281 is the decimal equivalent of the device ID
nn represents the type of error
x represents the slot number of the adapter in error.

The values for nn are:

85Configuration Compare failure
90Adapter Card Test failure
91Open Phase Test failure
92Computer problem
93Transmit/Receive Test failure
99General error


If you use Windows NT 4.0 (workstation or server) with this adapter, you must use Service Pack 3 or higher. Microsoft decided they should count MCA slots differently than IBM did. As a result, IBM Streamer family adapters don't work out of the box on a fresh NT install. You will get "a device attached to the system is not functioning" messages in the system event log and the adapter will not come up.

If you do elect to update the microcode on your adapter, it may be a good idea to run your computer on backup power during the flashing process. I would also suggest cycling power to the system before you do the flash to be sure you are "starting fresh".

The Dual LANStreamer MC 32 adapter has two ports that support data rates of 4 Mbps or 16 Mbps. You could use UTP on one port and STP on the other, likewise the data rates do not have to be the same for both ports. The Dual LANStreamer requires a 386 or better.

Note: To do RIPL, you must use adapter's port A.

ADF Sections AdapterId 08FAAh "IBM Dual LANStreamer MC 32 Adapter"

Adapter Data Rate
   This adapter can operate at 4 Mbps or 16 Mbps.  Autosense - adapter determines data rate, 16 Mbps data rate, and 4 Mbps data rate. (Ed. I recommend setting to 16Mbps if network supports it. Autosense may not correctly set ringspeed)
   < "Autosense">, 16 Mbps, 4 Mbps

Interrupt Level
   Interrupt that the 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.  Note: If multiple Auto LANStreamer adapters are in the same system, they must all use the same interrupt level.
   <"Interrupt 3">, 2, 10, 11

Adapter I/O Address Range
   I/O address range of the adapter.  It uses two 256 byte regions on 1024 byte boundaries. For micro channel I/O cycles, this adapter is selected when the micro channel I/O address is within its respective 256 byte region. If more than one adapter is used in your computer, each adapter must be assigned separate I/O address ranges.
   <"1C00-1CFF & 2000-20FF">, "2000-20FF & 2400-24FF" and many more...

Remote Program Load Address Range
   The adapter's Remote Program Load (RPL) memory space is relocatable within M/C memory space. The memory space may be located on any 16K boundary from hex 000C 0000 to 000D C000.
   <"Disabled">, "C0000-C3FFF", "C4000-C7FFF", "C8000-CBFFF", "CC000-CFFFF", "D0000-D3FFF", "D4000-D7FFF", "D8000-DBFFF", "DC000-DFFFF"

Streaming Data Select
   The Adapter can work with / wo Data Streaming.  For best performance, select <Enabled>.
   <"Enabled ">, "Disabled" 

   Bus Arbitration Fairness controls whether the adapter shares the bus equitably with other devices or retains control of the bus as needed.  Under normal circumstances, select <ON>.
   <"Fairness ON ">, "Fairness OFF"

Arbitration Level
   This adapter uses 2 arbitration levels. If more than one adapter is used in your computer,  each adapter must be assigned separate arbitration levels.
   <"Level 8 & 9">, and more...

Parity Enable/Monitor Feedback
   This adapter can generate and check data and address parity.  It can also monitor 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 "

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
Last update: 08 May 2024 - Changelog | About | Legal & Contact