What is the exact relationship between Microdrives and Compact Flash Type II cards?
According to the Compact Flash spec: The configuration of the CompactFlash Card shall be controlled using the standard PCMCIA configuration registers starting at address 200h in the Attribute Memory space of the storage card or for True IDE Mode, pin 9 being grounded. The other two modes mentioned by b1tr0t are I/O mode and memory mode, according to the specs.