27256 in place of a 2764

Alexis thrashbarg at kaput.homeunix.org
Sun Jan 27 21:43:42 CST 2008


Ground the extra address pins and write the data to the lowest 8k of the
ROM. They are pins 1 and 26.

Make sure the grounded pins aren't attached to anything else on the
circuit. 

Alexis.


On Sun, 2008-01-27 at 19:37 -0800, David Griffith wrote:
> Under what conditions can a 27256 be used in place of a 2764?  I have a
> schematic that calls for the latter, of which I have none, but I have lots
> of the former.
> 



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