Path: utzoo!attcan!uunet!husc6!cmcl2!nrl-cmf!mailrus!iuvax!inuxc!inuxa!rowley
From: rowley@inuxa.UUCP (David Rowley)
Newsgroups: sci.electronics
Subject: Re: I Can't copy an EPROM... Help!
Message-ID: <327@inuxa.UUCP>
Date: 17 Sep 88 21:03:00 GMT
References: <7023@aw.sei.cmu.edu>
Organization: AT&T Consumer Products, Indianapolis
Lines: 12

> I'm trying to copy a set of debug ROMs (Part # Motorola 133ABUG) and I've
> had no success.  Is there something I've missed?

I know on an apple computer although the ROM's are pin for pin compatible
with a 2716 there is one small difference:  one of the chip enable lines
has been inverted.  If you read the fine print of a data manual you will
find this is an option: the polartity of the chip select lines.

So.... maybe your lines are also inverted.

But then again it seems if this were true you would have trouble copying
the data to the EPROM programmmer.