Wher to get ZIFs and EPROMs?

[ECMnut at aol.com]

Bob,
I have had problems with 'some' 250ns chips in my 7749 ecm.
I got a prom error and it went into limp mode.  I think he should
use 200 or faster.  On the other hand, I may have had some duds.
Mike V
> 
>  These are National Semiconductor 256's, CMOS, quartz windows, at
>  250ns access. They are pulls that I purchased from Astro Marketing.
>  If these will do, $1 @ plus ship. I have 30 that I can sell.
>  
>  I'm posting this so that maybe someone can help as to the access time,
>  I don't know if these are correct for Ted's application.
>