PCI IO Space

[Luca Rastello <rastello@cadence.com>]

With reference to page 59 of the PCI-to-PCI Bridge Architecture Spec
(rev 1.1 18/12/98), about the ISA mode in Base/Limit address decoding,
it is state that if the ISA Enable bit in the Bridge Control register
affects addresses I/O range defined by the I/O base and limit registers
and int the first 64KB of PCI I/O Space (0000 0000h to 0000 FFFFh). 

I am not clear though whether these first 64KB of I/O Space are to be
intended as the first 64KB of the space defined by the base/limit
registers, or if it is a different I/O address space.

Thanks to anyone who will answer,

Luca

-- 
+---------------------------------------------------------------+
| Luca RASTELLO                            +---_-----------+    |
| Consulting Engineer                      | c a d e n c e |    |
| mailto:rastello@cadence.com              +---------------+    |
+---------------------------------------------------------------+