AIMB-785 User Manual 102
B.24 Fixed I/O Ranges Decoded by Intel PCH
Table B.26: Fixed I/O Ranges Decoded by PCH
I/O Address Read Target Write Target Internal Unit
00h-08h
DMA Controller DMA Controller DMA
00h–08h DMA Controller DMA Controller DMA
09h–0Eh RESERVED DMA Controller DMA
0Fh DMA Controller DMA Controller DMA
10h–18h DMA Controller DMA Controller DMA
19h–1Eh RESERVED DMA Controller DMA
1Fh DMA Controller DMA Controller DMA
20h–21h Interrupt Controller Interrupt Controller Interrupt
24h–25h Interrupt Controller Interrupt Controller Interrupt
28h–29h Interrupt Controller Interrupt Controller Interrupt
2Ch–2Dh Interrupt Controller Interrupt Controller Interrupt
2Eh–2Fh LPC
SIO
LPC
SIO
Forwarded to LPC
30h–31h Interrupt Controller Interrupt Controller Interrupt
34h–35h Interrupt Controller Interrupt Controller Interrupt
38h–39h Interrupt Controller Interrupt Controller Interrupt
3Ch–3Dh Interrupt Controller Interrupt Controller Interrupt
40h–42h Timer/Counter Timer/Counter PIT (8254)
43h RESERVED Timer/Counter PIT
4Eh–4Fh LPC
SIO
LPC
SIO
Forwarded to LPC
50h–52h Timer/Counter Timer/Counter PIT
53h RESERVED Timer/Counter PIT
60h Microcontroller Microcontroller Forwarded to LPC
61h NMI Controller NMI Controller Processor I/F
62h Microcontroller Microcontroller Forwarded to LPC
64h Microcontroller Microcontroller Forwarded to LPC
66h Microcontroller Microcontroller Forwarded to LPC
70h
RESERVED
1 NMI and RTC Control-
ler
RTC
71h RTC Controller RTC Controller RTC
72h RTC Controller NMI and RTC Control-
ler
RTC
73h RTC Controller RTC Controller RTC
74h RTC Controller NMI and RTC Control-
ler
RTC
75h RTC Controller RTC Controller RTC
76h RTC Controller NMI and RTC Control-
ler
RTC
77h RTC Controller RTC Controller RTC
80h DMA Controller, LPC,
PCI,
or
PCIe*
DMA Controller and
LPC, PCI, or PCIe
DMA
81h–83h DMA Controller DMA Controller DMA
84h–86h DMA Controller DMA Controller and
LPC, PCI, or PCIe
DMA
87h DMA Controller DMA Controller DMA
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