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Appendix b - system resources, B.1 system memory map, B.2 direct memory access channels – ADLINK NuPRO-E340 User Manual

Page 91: Appendix b, system resources: pr, B appendix: system resources, System memory map, Direct memory access channels

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System Resources

77

NuPRO-E340

Appendix B - System Resources

B.1 System Memory Map

Table B-1: System Memory Map

B.2 Direct Memory Access Channels

Table B-2: Direct Memory Access Channels

Note (1): DMA channel 0, 1, or 3 will be occupied when using the parallel port.

Address Range

(decimal)

Address Range

(hex)

Size

Description

(4GB-2MB)

FFE00000 –

FFFFFFFF

2 MB

High BIOS Area

(4GB-18MB) –

(4GB-17MB-1)

FEE00000 –

FEEFFFFF

1 MB

FSB Interrupt Memory Space

(4GB-20MB) –

(4GB-19MB-1)

FEC00000 –

FECFFFFF

1 MB

APIC Configuration Space

960 K – 1024 K

F0000 – FFFFF

64 KB

System BIOS Area

896 K – 960 K

E0000 – EFFFF

64 KB

Extended System BIOS Area

768 K – 896 K

C0000 – DFFFF 128 KB

PCI expansion ROM area
C0000 – C7FFF: Onboard VGA BIOS
CB800 – CC7FFF: Intel 82577LM
PXE option ROM when onboard LAN
boot ROM is enabled.

640 K – 768 K

A0000 – BFFFF

128 KB Video Buffer & SMM space

0 K – 640 K

00000 – 9FFFF 640 KB DOS Area

Channel Number

Data Width

System Resource

0

8-bits

Parallel port

(1)

1

8-bits

Parallel port

(1)

2

8-bits

Diskette drive

(1)

3

8-bits

Parallel port

(1)

4

Reserved - cascade channel

5

16-bits

Open

6

16-bits

Open

7

16-bits

Open