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Unknown EPROM
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JardaXor



Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
PostPosted: Thu Sep 13, 2012 1:23 am    Post subject: Reply with quote
Nono, but the structure of conductors inside the ceramic (zebra) and contact square is different.
It's (I think) oldest or newest design.
The color difference should be due to light and camera setings...
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CPUShack



Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
PostPosted: Thu Sep 13, 2012 1:38 am    Post subject: Reply with quote
yah I noticed the traces diff too, I think I have seen it before, but apparently not in my collection. Its pretty cool
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JardaXor



Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
PostPosted: Thu Sep 13, 2012 2:42 pm    Post subject: Reply with quote
Another find - pictures will make soon.

NSC MM52030 - purple
TI TMS2532JDL-45 - purple

On some NSC found second code - similar like on the first picture here:
MM1702AQ (SM55273)
MM2708Q (SM00246)
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