Seco Qseven QUADMO747-E6 Series User Manual page 30

QUADMO747-E6xx
User Manual - Rev. First Edition: 1.0 - Last Edition: 1.2- Author: S.B. - Reviewed by G.M.
4.6 I/O Mapping – IRQ
4.6.1 ISA Addressing
On conventional ISA bus, addressing space ranges from 00 Hex to 3FF Hex: some of these I/O
addresses are occupied by system resources; therefore they cannot be used for direct I/O access.
Please notice, however, that free I/O addresses can change, since PCI dynamical allocation can
occupy some of the spaces that are left from BIOS settings. Disabling, via BIOS, some resources
can also free some I/O addresses. Finally, additional I/O addresses can be occupied by non-
standard devices placed on the Carrier Board of Quadmo747-E6xx module.
Therefore, for an exhaustive list of I/O addresses used, it is better to look into your O.S. Device
Manager, to see what addresses are effectively free.
Here following, however, there is a list of addresses usually occupied for system resources.
Device
0x00-0xFF
IDE1 0x170-0x177
IDE0 0x1F0-0x1F7
IDE1 0x376-0x377
COM4 0x2E8-02xEF
COM2 0x2F8-02xFF
IDE0 0x3F6-0x3F7
VGA standard 0x3B0-0x3DF
COM3 0x3E8-0x3EF
IDE0 0x3F6-0x3F7
COM1 0x3F8-0x3FF
0x400-0x47F
0x4D0-0x4D1
0x800-0x80F
PCI / PCIe 0xCF8-0xCFF
PCI / PCIe Devices 0x1000-0xEFFF
0x162E-0x162F
0x164E-0x164F
0xF000-0xFFFF
Range
RESERVED FOR MOTHERBOARD PRIMARY RESOURCES
Available in case the Carrier Board doesn't have SMSC SCH3114 Super
I/O controller, able to manage 4 Serial Ports
Available in case there isn't any Super I/O controller on the Baseboard
Available in case the Carrier Board doesn't have SMSC SCH3114 Super
I/O controller, able to manage 4 Serial Ports
Available in case there isn't any Super I/O controller on the Baseboard
RESERVED FOR MOTHERBOARD PRIMARY RESOURCES
RESERVED FOR MOTHERBOARD PRIMARY RESOURCES
RESERVED FOR MOTHERBOARD PRIMARY RESOURCES
PCI configuration register
PCIO BIOS starts to assign I/O resources from 0xFFF0 downwards
RESERVED FOR SUPER I/O CONFIGURATIONS
RESERVED FOR SUPER I/O CONFIGURATIONS
RESERVED FOR MOTHERBOARD PRIMARY RESOURCES
Copyright © 2012 SECO s.r.l.
QUADMO747-E6xx
Note
Page 30