USB Port

Item

Specification

 

 

Universal HCI

USB 1.1

 

 

USB Class

Support legacy keyboard for legacy mode

 

 

Memory Address Map

 

Address

Size

Function

 

 

 

 

000000

- 07FFFF

512KBytes

Host Memory

 

 

 

 

080000

- 09FFFF

128KBytes

Host/PCI Memory

 

 

 

0A0000 - 0BFFFF

128KBytes

PCI/ISA Video Buffer Memory

 

 

 

0C0000 - 0C7FFF

32KBytes

Video BIOS Memory

 

 

 

0C8000 - 0DFFFF

96Kbytes

ISA Card BIOS & Buffer Memory

 

 

 

0E0000 - 0EFFFF

64Kbytes

BIOS Extension Memory

 

 

 

Setup and Post Memory

 

 

 

PCI Development BIOS

 

 

 

0F0000 - 0FFFFF

64Kbytes

System BIOS Memory

 

 

 

 

100000

- UPPER LIMIT

 

Main Memory

 

 

 

UPPER LIMIT - 4GBytes

 

PCI Memory

 

 

 

 

PCI INTx# and IDSEL Assignment Map

PCI INTx #

PCI Devices

Device IDSEL: ADxx

 

 

 

INTA#

ADIMM-slot

N

 

 

 

INTB#

PCI-Slot1

AD20

 

 

 

INTC#

PCI-Slot2

AD22

 

 

 

INTD#

PCI-Slot3

AD24

 

 

 

PCI Slot IRQ Routing Map

PCI INTX#

INTA

INTB

INTC

INTD

Bus Mastering

 

 

 

 

 

 

PCI slot 1

Route 4

Route 1

Route 2

Route 3

Enabled

 

 

 

 

 

 

PCI slot 2

Route 3

Route 4

Route 1

Route 2

Enabled

 

 

 

 

 

 

PCI slot 3

Route 2

Route 3

Route 4

Route 1

Enabled

 

 

 

 

 

 

Chapter 1

17

Page 25
Image 25
Acer power sx/sxb/sc manual USB Port, Memory Address Map, PCI INTx# and Idsel Assignment Map, PCI Slot IRQ Routing Map