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computers / comp.sys.ibm.ps2.hardware / Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

SubjectAuthor
* Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SXLouis Ohland
`* Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SXIBMMuseum
 +- Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SXLouis Ohland
 `* Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SXLouis Ohland
  `* Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SXIBMMuseum
   `- Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SXlharr...@gmail.com

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Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX
VINTAGE MOTHERBOARD
Date: Tue, 28 Dec 2021 12:47:45 -0600
Organization: csiph.com Internet News Service
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 by: Louis Ohland - Tue, 28 Dec 2021 18:47 UTC

https://www.ebay.com/itm/324896616161

BIN / MAO

Not sure what system this was for.

Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

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Subject: Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX
VINTAGE MOTHERBOARD
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Tue, 28 Dec 2021 21:44 UTC

> https://www.ebay.com/itm/324896616161
>
> BIN / MAO
>
> Not sure what system this was for.

This is the same pinout as the Intel "Turbocache" like the Reply 60/65/80 Turboboard would use...

Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX
VINTAGE MOTHERBOARD
Date: Tue, 28 Dec 2021 15:59:35 -0600
Organization: csiph.com Internet News Service
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 by: Louis Ohland - Tue, 28 Dec 2021 21:59 UTC

Wasn't there a ZEOS or Zenith as well?

On 12/28/2021 15:44, IBMMuseum wrote:
>> https://www.ebay.com/itm/324896616161
>>
>> BIN / MAO
>>
>> Not sure what system this was for.
>
> This is the same pinout as the Intel "Turbocache" like the Reply 60/65/80 Turboboard would use...

Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX
VINTAGE MOTHERBOARD
Date: Tue, 28 Dec 2021 16:30:24 -0600
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 by: Louis Ohland - Tue, 28 Dec 2021 22:30 UTC

https://ia801604.us.archive.org/9/items/bitsavers_inteldataBocessorHardwareReferenceManual_34104475/1990_i486_Microprocessor_Hardware_Reference_Manual.pdf

Page 209 is the section on cache

On 12/28/2021 15:44, IBMMuseum wrote:
>> https://www.ebay.com/itm/324896616161
>>
>> BIN / MAO
>>
>> Not sure what system this was for.
>
> This is the same pinout as the Intel "Turbocache" like the Reply 60/65/80 Turboboard would use...

Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

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Subject: Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX
VINTAGE MOTHERBOARD
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Tue, 28 Dec 2021 23:11 UTC

>>> 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...

Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX VINTAGE MOTHERBOARD

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Subject: Re: Auction: ULTRA RARE VINTAGE NEW CACHE MEMORY MODULE FOR 486DX SX
VINTAGE MOTHERBOARD
From: lharris...@gmail.com (lharr...@gmail.com)
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 by: lharr...@gmail.com - Wed, 29 Dec 2021 07:24 UTC

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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