I found some information on the web as follows, but incomplete.
http://en.wikipedia.org/wiki/Input/output_base_address
http://wiki.osdev.org/I/O_Ports
Where to download the specification?
See Question&Answers more detail:osI found some information on the web as follows, but incomplete.
http://en.wikipedia.org/wiki/Input/output_base_address
http://wiki.osdev.org/I/O_Ports
Where to download the specification?
See Question&Answers more detail:osA good source for current (and not from 1994) I/O port map is chipset documentation, e.g. Intel? 7 Series Chipset Family PCH Datasheet (see section 9.3, I/O Map). For example, here are some ports which are commonly used in modern PCs and are not mentioned in the old lists:
Note that some I/O ranges are dynamic and can be moved by reprogramming various bits in the corresponding PCI devices configuration.