I think it was possible to diable parity checking in the BIOS setup when you needed to mix types and just as today, if you put a non-parity (non-ECC) module in the first memory slot, then the extra ECC bits on any other modules are ignored. You should be able to find out for sure using wikipedia or the crucial or Kingston FAQ pages. IAC, why are you messing with such ancient technology when so much better stuff is available so cheap?
. Also check your prices. Crucial still has normal and EDO simms. The price isn't bad if you consider it was $40. or more per MegaByte (That's right, $160. for a 4MB module) not that long ago...
.bh.