On Tuesday, December 28, 2021 at 6:11:43 PM UTC-5, IBMMuseum wrote:
Not sure what system this was for.
Wasn't there a ZEOS or Zenith as well?
The Intel "Professional Workstation" (an EISA 486 system) has a socket for it too...
So I bought one of these quite a few weeks ago and in the TurboBoard it throws NMI's or the board fails to post when a 83Mhz POD is installed. Working on getting a stock 486 from David also thinking of buying a DX4 100 Overdrive off of eBay just to have
and fool around with.
This is the page I use:
https://ardent-tool.com/NCR/3350.html
"From "wault" on the Vintage Computer Forum
This board was manufactured by Intel and IDT and used over about a two year period on a variety of 486 systems using a 33Mhz bus in the early nineties. The board contains a total of 4 rows of 28 pins.
There are 64K and 128K versions and here are some of the part numbers: IDT7MB6091
IDT7MB6098
IDT7MB6098SA33K
I82485MA-33 (64K)
I82485MB-33 (128K)
Machines that I know of using this item:
Multibest Industrial MB4861DX
Epson ExpressStation 486
Packard Bell 22/23 motherboard
NCR 3350 and 3434
Reply 80 Planar
Intel L486
DECpc 433
Morse Technologies KP 486EDX
Zenith ZDS
Zeos 486/33"
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