I know it's a long shot but I'm desperate :)
Cheers
Geoff
Perhaps this site may be of use
http://www.applegate.co.uk/elec/pselect/ps_1594.htm
I've gone through this myself lately with a couple of chips on some telecom
hardware I'm reverse engineering. I ended up having the chips taken off by
somebody with rework equipment, and doing the programming and reading myself
with a programmer.
-Chris