Philip Blundell wrote:
> 
> >       Sorry, I don't know the answer to that; I'm a new to programming at
> >       this low level and IO ports are a concept that I haven't looked into
> >       yet.
> 
> What does `lspci -vv' say when the system is running?


So the term IO ports refers to PCI I/O space on the SA at address 7C000000 to
7c00ffff thats maped to ffe00000 to FFe0ffff (?) ??


[root@linux-3 /root]# lspci -vv
00:06.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c860 (rev
02)
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping-
SERR+ FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 8 min, 64 max, 32 set, cache line size 08
        Interrupt: pin A routed to IRQ 24
        Region 0: I/O ports at 8000000 [disabled]
        Region 1: Memory at 00001000 (32-bit, non-prefetchable)

00:07.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev
24)
        Subsystem: Unknown device 10b7:9055
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 10 min, 10 max, 32 set, cache line size 08
        Interrupt: pin A routed to IRQ 22
        Region 0: I/O ports at 2000
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME-
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

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