David wrote
>But why is there a 56MB RAM limit?!?!?
First of all because a DRAM expansion card bigger than 48M (+8M) to fit
into the duo series' expansion slot was never manufactured.
Also Apple specifies different max. RAM levels for their different models
of the duo line. This may have to do with the cards available at the time
the respective models came out, but most likely as well with the
different CPU�s capability (depending on ROM and Memory Manager) to
address RAM - would be interesting to see whether a 48M card would work
e.g. in a PB Duo150.
BTW thanks for pointing me to macsolutions.com - they do have the 48M
expansion, although at the soaring price of $325..
Edgar
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