Hmm, well this is odd. I got some non-parity RAM for my Macintosh IIsi and it appears to still be complaining with the 'chimes of death'. I've tried different sticks, different capacities, even paraty RAM just to be sure and all the same result. It boots just fine with none installed (well it would if my version of System 7 installed didn't use more then a MB of RAM to boot). Does anyone know why this would be happening? :-/