julesrichardsonuk at yahoo.co.uk
Fri Sep 14 15:00:09 CDT 2007
Zane H. Healy wrote:
>> I've been trying to google up an answer, but have had no luck. What is the
>> difference between a 27256 and a 27C256 EPROM? Can a 27C256 EPROM be
>> substituted for a 27256?
> It never fails...
On a related note, is there such a thing as a homebrewed cross-reference
showing which EPROMS can be treated as the 'same' from a programming point of
For instance, my programmer knows nothing of Mitsubishi EPROMs, but does
acknowledge many other manufacturers. I had no luck earlier trying to program
a Mitsubishi 27218 part as an AMD EPROM of equivalent size, but it worked fine
by telling the programmer that it was an Intel 27128 - presumably the timings
vary slightly between manufacturers, but it's often possible to find something
that's "close enough".
(If anyone else has an old Elan universe-series EPROM / PAL programmer, shout.
I'd be interested to know if you have programming cartridges that are
different to mine)
More information about the cctalk