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cedrik
Joined: 16 Oct 2011
Posts: 2008
Location: Rom�nia
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rjluna2
Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
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 Posted: Wed Feb 18, 2015 2:36 pm Post subject: |
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That's interesting  |
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cedrik
Joined: 16 Oct 2011
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Location: Rom�nia
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Wed Feb 18, 2015 6:29 pm Post subject: |
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Well, I checked the datasheet for 287 and connections are surely strange.
If it's top view the only relatively sane possible configuration (left end is top)
pulls up NC(4) to Vss, connects !PEACK with CMD1 and NC(38 ) with RESET and D0.
Hmmm... some test purposes maybe.
Where do you find it? |
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cedrik
Joined: 16 Oct 2011
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Thu Feb 19, 2015 4:42 pm Post subject: |
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maybe in '99 he didn't find one on ebay and wanted to test some environment that required but did not use a 287?
Just guessing and wondering what strange stuff I have in my workshop.
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Mizutsuki Raki
Joined: 23 Mar 2014
Posts: 59
Location: Seoul, Korea
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| Posted: Sun Feb 22, 2015 4:40 am Post subject: |
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| Could you tell me a value of diode? |
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cedrik
Joined: 16 Oct 2011
Posts: 2008
Location: Rom�nia
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| Posted: Sun Feb 22, 2015 5:48 am Post subject: |
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| Mizutsuki Raki wrote: | | Could you tell me a value of diode? |
im not good at this.. but maybe if you tell me how to measure it i'll be able to do it 
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rjluna2
Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
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| Posted: Sun Feb 22, 2015 7:50 pm Post subject: |
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| What does the diode etch says besides visible '94' here |
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