Ardent Tool of Capitalism

Your go-to destination for everything IBM PS/2 and Micro Channel
Reference
Material		 Software
& Drivers		 IBM
Systems		 Non-IBM
Systems		 MCA
Adapters		 Parts &
Technology		 Setup &
Config

EduQuest Token Ring Adapter

EduQuest TR Adapter
ROM Images

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

EduQuest TR Adapter

FRU P/N 6263325, P/N 6263326 [P] [P]

This is a proprietary "inverted ISA" adapter designed specifically for the EduQuest line.

EduQuest TR Adapter

P1 3-pin jumper (rearmost pins jumped)
S1 DIP switchblock
T1,2 39F6511
U1 50G6144(ESD) 16/4 TR Iface
 U11,12 TC55329J-35 32Kx9 SRAM
U? 6263329 µcode + RPL? ROM
Y1 32.0000 MHz osc

Jumpers/Switches Not a clue, but I'd suspect they are similar to or the same as the ISA TR adapters.

I should find out if this adapter supports RPL. It probably does... seems that booting from a centralized server was pretty common in the educational market so as to cut costs.

Looks just like an ISA version of the ubiquitous short 16/4 adapter for MCA machines.

ROM Images

The original device is Toshiba TC57H1024AD-85 (U?, not marked visibly).

6263329 - © IBM CORP. 1991, 1993 [P]

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: 05 Apr 2025 - Changelog | About | Legal & Contact