PAR64

["Kjell A. Andersen" <kjell@vmetro.no>]

Hi,
In PCI spec. 2.1 PAR64 was only required to be valid "one clock after
the initial address phase when REQ64# is asserted and the DAC command is

indicated on C/BE[3::0]#. PAR64 is also required to be valid the clock
after the second address phase of a DAC command when REQ64# is
asserted."

In PCI spec. 2.2 "PAR64 must be valid one clock after each address phase

on any transaction in which REQ64# is asserted." I.E. PAR64 must be
valid one clock after each address phase regardless of the DAC command.

Does anyone know the reason for this PAR64 spec. change?


Regards,
Kjell A. Andersen

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