For the people who burn their own eproms is their anyone who uses the 27C256B.
My problem is that I have some 27C256B 's lying around but my eprom programmer can't program this specific type (I think this version is a newer version of the older 27C256 with different VCC and programming pulses during the write process).
I have also some 27C512 and I can burn those just fine.
So if anyone uses the 27C256B can you tell me what programmer you use to burn the eproms.
So in the meanwhile I'll replace the 27C256 by a 27C512.
I know that I then have to start the programming at &h8000 but are their any other modifications needed?
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That means a blank check fails after you've tried a write attempt?
tantalum would also be a good choice here).