Question on Config Cycle

[Wilson Leung <wilsonl@cs.sfu.ca>]

Hi PCI experts,

I am designing a slow PCI target device (slow as defined on p.80).  I 
have the following questions:

During configuration cycle, which of the following is true?

1. Since address decoding is done externally (by IDSEL), the slow
   target device MUST claim the transcation as if it was a fast
   device. (i.e. right after FRAME is asserted)

or

2. It can claim the transcation slowly (i.e. 3 clocks after FRAME
   is asserted).


Also, are slow devices common?
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