I/o address map – Intel Notebook Computer 7200 User Manual

Page 4

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I/O Address Map

Hex range

Device

000 - 00F

DMA controller-1

020 - 021

Interrupt controller-1

040 - 043

Timer 1

048 - 04B

Timer 2

060 - 06E

KB controller M38813 chip select

070 - 071

RTC and NMI mask

080 - 08F

DMA page register

0A0 - 0A1

Interrupt controller-2

0C0 - 0DF

DMA controller-2

1F0 - 1F7

Fixed disk select

3F6 , 3F7

2F8 - 2FF

Serial port 2

378 - 37A

Parallel port 1

3B4 , 3B5

CRT controller index (mono)

3D4 , 3D5

CRT controller index (color)

3BA

Feature control

3C0 - 3DA

3F2 - 3F7

Floppy disk controller

3F0 , 3F1

Configuration port

3F8 - 3FF

Serial port 1


System Memory Map

Address

Size

Function

000000 - 09FFFF

640KB

640KB Base Memory

0A0000 - 0BFFFF

128KB

Video RAM

0C0000 - 0CBFFF

48KB

VGA BIOS

0CC000 - 0DFFFF

80KB

Reserved

0E0000 - 0EFFFF

64KB

Reserved

0F0000 - 0FFFFF

64KB

System BIOS for Kernel

100000 -

15MB to
127MB

Extended Memory

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