crystal.bk : cryst-4.fb4 Page 87 Monday, March 23, 1998 4:09 AM

4 Technical Information

System Specifications

I/O Addresses used by

0000 - 000F

DMA controller 1

PC Workstation

0020 - 0021

Master interrupt controller

 

002E - 002F

Configuration registers

 

0040

- 0043

Timer 1

 

0060, 0064

Keyboard controller

 

0061

 

Port B (speaker, NMI status and control)

 

0070

 

Bit 7: NMI mask register

 

0070

- 0071

RTC and CMOS

 

0080

 

Manufacturing port (POST card)

 

0081

- 0083,

 

 

008F

 

DMA low page register

 

0092

 

PS/2 reset and Fast A20

 

0096

- 0097

Little Ben

 

00A0 - 00A1

Slave interrupt controller

 

00C0 - 00DF

DMA controller 2

 

00F0 - 00FF

Coprocessor error

 

0130

- 013F

AD1816 sound system

 

0170

- 0177

Free (IDE secondary channel)

 

01F0 - 01F7

IDE primary channel

 

0200

 

AD1816 Joystick

 

0220

- 0232

AD1816 Sound Blaster

 

0278

- 027F

LPT 2

 

02E8 - 02EF

Serial port 4 (COM4)

 

02F8 - 02FF

Serial port 2 (COM2)

 

0330

- 0331

AD1816 MIDI

 

0372

- 0377

Free (Secondary flexible disk drive)

 

0378

- 037A

LPT1

 

0388

- 038B

AD1816 Adlib (FM)

 

03B0 - 03DF

VGA

 

03E8 - 03EF

COM3

 

03F0 - 03F5

Flexible disk drive controller

 

03F6

 

IDE primary channel

 

03F7

 

Flexible disk drive controller

 

03F8 - 03FF

COM1

 

04D0 - 04D1

Interrupt edge/level control

 

0678

- 067B

LPT2 ECP

 

0778

- 077B

LPT1 ECP

 

0CF8 - 0CFF

PCI configuration space

 

8000

 

PIIX4 Power Management I/O space

 

8400

 

NS317 ACPI Registers

 

8800

 

PIIX4 SMBus I/O space

 

 

 

 

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