EPROM identification

[Ludis Langens]

WEG1192 at aol.com wrote:
> 
> 3.1L V-6s == Corvette

Huh?

> 014

National Semiconductor

> 045915

27256 or equivalent.

> AD9050B

50th week of 1990.

> I have quite a few EPROMs like this in which only the last series of numbers
> changes. Any help would be appreciated.

There are lots of slightly different NatSemi 27256's.  NMOS/CMOS. 
25/21/12.5 volt VPP.  5/6 volt VCC (during programming).  And so on.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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