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Hanzu · 05 September 2017, 14:15

I tried to answer you earlier, but EAB was offline that day so I forgot to try again. I have ordered AT27C256 from China but that has not arrived yet. When it arrives I have to make sure I do the programming right, since it is OTP type of chip.

I have began to question my assumption that U52 (socketed AT27C256) is SCSI ROM chip and U40 Lattice is main firmware of the card. Could you try your card if it boots when U52 is PLCC extractor removed. If that only removes SCSI function we can be sure what it does.

05 September 2017, 14:15	#9
Hanzu Repairer-Preserver-Gamer Join Date: Sep 2013 Location: Finland Age: 51 Posts: 113	I tried to answer you earlier, but EAB was offline that day so I forgot to try again. I have ordered AT27C256 from China but that has not arrived yet. When it arrives I have to make sure I do the programming right, since it is OTP type of chip. I have began to question my assumption that U52 (socketed AT27C256) is SCSI ROM chip and U40 Lattice is main firmware of the card. Could you try your card if it boots when U52 is PLCC extractor removed. If that only removes SCSI function we can be sure what it does.