@E000.ADF IBM Token-Ring Network Adapter (ver. 1.10)
@E000.ADF IBM Token-Ring Network Adapter (ver. 1.00, less RAM choices, different fixed resources)
@E000.DGS Diagnostics
187-076 IBM Token-Ring Network Adapter/A
190-004 IBM Token-Ring Network PS/2 Model P70 386 Adapter/A (39F9598) (summary only)
bk8r1001.boo LAN Tech Ref Token-Ring Network Shared-RAM Adapters, SC30-3588-01
bk8r1000.boo Token-Ring Network Adapter Interface Ver 1, Release 1.0, SC30-3588-00
bk8p7001.boo LAN Tech Ref: 802.2 and NetBIOS APIs, SC30-3587-01
96X5767
IBM Token-Ring Network Trace and Performance Program User's Guide 1st Ed (Dec 1987)
Understanding Token Ring (by Bret Glass)
Interactive Token-Ring Network Troubleshooting
Long Token-Ring Adapter
Short Token-Ring Adapter
ROM Images
Known Problems
Long Token-Ring Adapter (4Mbs) P/N 83X7488(A)
There are no visible part IDs on the board. The IDs shown here are completely made up.
![](TR4_Long.gif)
P1 DE9 TR connector
U1 "RX" 6405686
U2 "TX" 56X2276
U3 Motorola 6413006
U4 OKI 67X0745
U5 63X4521 (heatsinked)
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U6 6407274
U7 83X7485 µcode ROM Odd
U8 83X7486 µcode ROM Even
U9,10 8Kx8 SRAM
U11 RPL ROM (socket)
Y1 16.0 MHz osc
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U7,8 83X7485 / 83X7486 µcode ROMs,
soldered in!
U9,10 8Kx8 SRAM -
Mitsubishi M5M5165P-70,
Sony CXK5864AP-70, or equivalent
The jumper-like "shunts" are able to be removed from the pins. Purpose
unknown. (possibly testing/debugging?)
Short Token-Ring Adapter (4Mbs) FRU P/N 25F7540
![](TR4_Short.gif)
CD1 DE9 TR connector
Y1 32.00000 MHz osc
ZM1 25F7335
ZM4 51F1439(ESD)
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ZM5,7 8Kx9 SRAM
ZM9 25F9158 µcode ROM Even
ZM10 25F9157 µcode ROM Odd
ZM11 RPL ROM (socket)
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ZM5,7 8Kx9 SRAM -
Mitsubishi M5M5179P-55 or equivalent
TROPIC Chipset, 16 KB of RAM
ROM Images
Short Adapter
All µcode ROMs are 32Kx8 (ZM9 / ZM10).
25F9158 / 25F9157 - © IBM CORP. 1988
93F0196 / 93F0197 - © IBM CORP. 1988, 1991
Known Problems
PS/2 Adapter Installation Restrictions 3270, Token Ring, Etc. (H005662)
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