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Appendix B Technical Summary
PPC-7508F USER
′
S MANUAL
Page: B-7
I/O Address Read Target Write Target Internal Unit
80h DMA Controller DMA controller &
LPC/PCI
DMA
81h-83h DMA Controller DMA Controller DMA
84h-86h DMA Controller DMA Controller &
LPC or PCI
DMA
87h DMA Controller DMA Controller DMA
88h DMA Controller DMA Controller &
LPC or PCI
DMA
89h-8Bh DMA Controller DMA Controller DMA
8Ch-8Eh DMA Controller DMA Controller &
LPC or PCI
DMA
08Fh DMA Controller DMA Controller DMA
90h-91h DMA Controller DMA Controller DMA
92h Reset Generator Reset Generator Processor I/F
93h-9Fh DMA Controller DMA Controller DMA
A0h-A1h Interrupt Controller Interrupt Controller Interrupt
A4h-A5h Interrupt Controller Interrupt Controller Interrupt
A8h-A9h Interrupt Controller Interrupt Controller Interrupt
ACh-ADh Interrupt Controller Interrupt Controller Interrupt
B0h-B1h Interrupt Controller Interrupt Controller Interrupt
B2h-B3h Power Management Power Management Power Management
B4h-B5h Interrupt Controller Interrupt Controller Interrupt
B8h-B9h Interrupt Controller Interrupt Controller Interrupt
BCh-BDh Interrupt Controller Interrupt Controller Interrupt
C0h-D1h DMA Controller DMA Controller DMA
D2h-DDh Reserved DMA Controller DMA
DEh-DFh DMA Controller DMA Controller DMA
F0h See Note 3 FERR# /IGNNE#/
Interrupt Controller
Processor interface
170h-177h IDE Controller
1
IDE Controller
1
Forwarded to IDE
1F0h-1F7h IDE Controller
2
IDE Controller
2
Forwarded to IDE
376h IDE Controller
1
IDE Controller
1
Forwarded to IDE
3F6h IDE Controller
2
IDE Controller
2
Forwarded to IDE
4D0h-4D1h Interrupt Controller Interrupt Controller Interrupt
CF9h Reset Generator Reset Generator Processor interface
Notes:
1. Only if IDE Standard I/O space is enabled for Primary Drive. Otherwise, the target is PCI.
2. Only if IDE Standard I/O space is enabled for Secondary Drive. Otherwise, the target is PCI.
3. If POS_DEC_EN bit is enabled, reads from F0h will not be decoded by the ICH2. If
POS_DEC_EN is not enabled, reads from F0h will forward to LPC.