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rjluna2
Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
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 Posted: Sun Jan 04, 2015 6:44 pm Post subject: IBM PS/2 8570-Axx/-Bxx Series Processor Boards |
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I wanted to start this thread for anyone who has these processor boards from their IBM PS/2 model 8570-Axx/-Bxx series with various upgrade and whatnot.
I'll start here: I have IBM PS/2 model 8570-A61 that I bought used and use the computer until the floppy disk controller failed. I pulled the board and scanned to uploaded at Wikimedia Commons. Here is the 33 MHz math coprocessor that I got it from eBay some time ago to make it little more powerful. I successfully ran with Windows 95 along with Windows 3.11 for Workgroup.
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Glory_Cloud
Joined: 24 Jul 2010
Posts: 2942
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| Posted: Sun Jan 04, 2015 7:54 pm Post subject: |
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The PS2 8570 models 061/081/121/161 all had a 386-DX20mhz cpus.
The model A21 and A16 had 386-DX25Mhz processors. The Exx models
were 386DX16's I believe, The odd one was the 8570-B21 which had a
486DX-25 processor. |
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rjluna2
Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
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gg1978
Joined: 31 Jul 2012
Posts: 1052
Location: Indiana, USA
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| Posted: Fri Jan 30, 2015 1:36 pm Post subject: |
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I have one of those daughterboards at home, though i forget what speed the chips are rated for.. Will have to get a picture and post it too  |
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