How much would a 3Mb (or larger) memory expander card
cost?
All luck. They're so obscure there really is no set price.
How much would a car power adapter cost?
You'd probably be best off just getting an AC to car converter. I have a
"Curtis Power Maker 50" which I paid about $50 for, and it works fine.
Were there ever any cards released that used the ROM
slot?
Were there ever any cards released that used the PDS slot?
All I can think of is the modem and memory cards.
Where can I find a detailed pin-out diagram of the
Portable's video out
socket & a PC's VGA video socket?
This could be tough. An adapter is required to use an external monitor
on the Mac Portable, and I've never heard of anybody actually owning one.
Unless you can find a _lot_ more information, you'd probably have better
luck finding a SCSI-based monitor.
Tom
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