In message <[EMAIL PROTECTED]> Mark Murray writes:
: The low-voltage cards are keyed so you cannot plug them into 5v
: slots; perhaps the dual-voltage slots have protective circuitry
: that co-operates with this?
Yes. The dual voltage cards are supposed to bring certain pins high
and/or low to denote which voltages they like. In my brief reading of
the Mindshare books, it appears that cards are only required to take
5V on Vcc, but aren't required to take it on Vpp.
Warner
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