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el_gecko
Joined: 25 May 2005
Posts: 1553
Location: Nice, France
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 Posted: Tue Jul 31, 2007 5:50 pm Post subject: DEC microVAX CPU |
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Hello!
I found this DEC MicroVAX 3100 M80 mainboard, powered by a 50 MHz
KA47 processor. I would like to know which chip is the CPU. I have other
VAX mainboards where the CPU is in the bottom right corner of the board,
but in this case, the quartz and cache chips seems to be around the left
one. Anybody could help me?
Note: the two chips have the same pinouts...
Thanks in advance,
Jérôme
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Unzlbunzl
Joined: 30 Jan 2007
Posts: 468
Location: Graz, Austria
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| Posted: Wed Aug 01, 2007 1:59 am Post subject: |
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| as far as i know, these too purple/gold on the left (cut off) are the cpu, have similiar boards, not sure either. |
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picur10
Joined: 22 May 2006
Posts: 1229
Location: Budapest, Hungary
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| Posted: Wed Aug 01, 2007 2:33 am Post subject: |
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| Here is my KA48 from a VAXstation 4000 VLC. click |
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el_gecko
Joined: 25 May 2005
Posts: 1553
Location: Nice, France
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| Posted: Wed Aug 01, 2007 2:46 am Post subject: |
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Wow, are you joking? These two chips are too eye-candy for that lol.
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el_gecko
Joined: 25 May 2005
Posts: 1553
Location: Nice, France
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| Posted: Wed Aug 01, 2007 2:49 am Post subject: |
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| picur10 wrote: | | Here is my KA48 from a VAXstation 4000 VLC. click |
Are you sure that it's the CPU? Your KA48 seems to be the same than my KA47... 
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picur10
Joined: 22 May 2006
Posts: 1229
Location: Budapest, Hungary
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| Posted: Wed Aug 01, 2007 5:58 am Post subject: |
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I'm not totally sure. I had only a broken piece of a cpu board. After a long searching I found a sematic picture of that what said this is the SOC cpu. I'm searching that damn site for an hour without success.  |
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Unzlbunzl
Joined: 30 Jan 2007
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picur10
Joined: 22 May 2006
Posts: 1229
Location: Budapest, Hungary
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| Posted: Wed Aug 01, 2007 8:49 am Post subject: |
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Great! I looked for this page! Thanks Unzlbunzl! 
3100 (M76)
4000 vlc |
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el_gecko
Joined: 25 May 2005
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Location: Nice, France
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