Help resurrect my Xerox Alto

[Brent Hilpert]

On 2010 Sep 20, at 9:16 PM, Nick Allen wrote:

>  Need to find the 14 pin opamp (as I am also a purest and want it to  
> be ORIGINAL), found a pair on ebay:   
> http://cgi.ebay.com/ws/eBayISAPI.dll? 
> ViewItem&item=330471900022&rvr_id=143156802920&crlp=1_263602_263622&UA= 
> %3F*F%3F&GUID=94213f4c1260a0269d971e47ff8e9d4d&itemid=330471900022%24&f 
> f4=263602_263622
>
> WAY to expensive, and I only need 1, anyone have one they might be  
> able to sell me, or able to find a cheaper source?

Well, if you can't find a (reasonably-priced) 14-pinner, the pinout  
patterns of the 8 and 14-pin DIP versions are the same, so an 8-pin is  
a drop-in replacement for the the 14-pin.

Begs the question of why the 14-pin version was ever produced, machine  
insertion/handling perhaps.

I have a couple of 8-pin DIP 741s (UA741C) from 1974 (7409).