Could some kind soul crosscheck an MK4564-25IRL DRAM against a D4164-2 for me? I suspect that I can replace the former with the latter, but the various datasheet archives on the 'net are being spectacularly unhelpful in providing a spec sheet for the 4564's :-( I'm expecting that they're exactly the same pinout and organisation, and that the 4564-25's are 250ns parts and the 4164-2's are 200ns parts, so they're a drop-in replacement, but it'd be handy if someone can confirm that! Worst-case I can pull some 4564's off a spare board, but I'd rather use the box of 4164's that I have if they'll fit... cheers J. -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.