copy eproms

Richard M richm at ntlworld.com
Tue Dec 4 09:15:43 GMT 2001


Yes, but depending on what the ECU does with the extra address line, it may
not work if you only copy the bottom 128K into the larger eprom - best to
duplicate the 128K code onto the 256K part (same in the lower 128K and upper
128K), so the code will be the same from the ECU's perspective, irrespective
of what state the most significant address bit is in.
Regards
Rich
----- Original Message -----
From: Tom Cheung <tomcheung at telus.net>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, December 04, 2001 6:49 AM
Subject: copy eproms


> can i copy data from a 27c128 eprom to a 27c256 eprom easily?
> i will purchase a needhams programmer to do this
>
> the 128k eprom is harder to get and may be more expensive
>
>
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