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Ii annex: resources, A io range, B memory range – BECKHOFF CB3053 User Manual

Page 68: C interrupt

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Annex: Resources

page 68

Beckhoff New Automation Technology CB3053

II Annex: Resources

A IO Range

The used resources depend on setup settings.
The given values are ranges, which are fixed by AT compatibility. Other IO ranges are used, which are
dynamically adjusted by Plug & Play BIOS while booting.

Address

Function

0-FF

Reserved IO area of the board

170-17F

1F0-1F7

IDE1

278-27F

2E8-2EF

2F8-2FF

COM2

370-377

378-37F

3BC-3BF

3E8-3EF

3F0-3F7

3F8-3FF

COM1

B Memory Range

The used resources depend on setup settings.
If the entire range is clogged through option ROMs, these functions do not work anymore.

Address

Function

A0000-BFFFF

VGA RAM

C0000-CFFFF

VGA BIOS

D0000-DFFFF

AHCI BIOS / RAID / PXE (if available)

E0000-EFFFF

System BIOS while booting

F0000-FFFFF

System BIOS

C Interrupt

The used resources depend on setup settings.
The listed interrupts and their use are given through AT compatibility.
If interrupts must exclusively be available on the ISA side, they have to be reserved through the BIOS
setup. The exclusivity is not given and not possible on the PCI side.

Address

Function

IRQ0

Timer

IRQ1

PS/2 Keyboard

IRQ2 (9)

IRQ3

COM1

IRQ4

COM2

IRQ5

IRQ6

IRQ7

IRQ8

RTC

IRQ9

IRQ10

IRQ11