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View Full Version : What is this (8088 FEP-2/3?) board?



SomeGuy
August 23rd, 2017, 08:38 AM
Does anyone know what exactly this board is?
https://imgur.com/a/KGR5F

It looks like a 16-bit ISA board, seems to have communication (SD and RD) indicator lights, has a ceramic Fujitsu 8088-2 CPU, and the ROM has the label "FEP-2/3".

There is a bit more discussion of it here: https://winworldpc.com/winboards/viewtopic.php?f=10&t=9760

Chuck(G)
August 23rd, 2017, 08:55 AM
Fujitsu uses the term "FEP" for front-end processors for their big servers. (e.g. PRIMERGY and PRIMEPOWER). That would appear to agree with the contents of this card, though I don't know exactly what system it came from.

Dwight Elvey
August 24th, 2017, 08:37 AM
My guess is that it is an ethernet card. It would connect to one of those
ethernet modules that clamped onto the thick ethernet cables.
Dwight

Chuck(G)
August 24th, 2017, 11:04 AM
I don't think so, Dwight.

Consider what's on the board--you have a NEC D27001 MPSC, a TI SN75118 dual differential reciver/transmitter (RS422) and a TDK ZJY51R3 line filter. And then there's the 9.8304MHz XCO--which is a commonly used baud rate reference (https://en.wikipedia.org/wiki/Crystal_oscillator_frequencies).

This thing screams RS422 data acquisition/process control to me. The Fujitsu QFP is an 8088 support device.