IBM PC 300PL manual Maps, O address map

Appendix

B.

System

address

maps

Figure

36

(Page

2 of

3). I/O address map

Address

(Hex)

Size

Description

0080–008F

16

bytes

ICH1, DMA

page

registers

0090–0091

15

bytes

General

I/O

locations

— available to PCI bus

0092

1

byte

PS/2

keyboard

controller

registers

0093–009F

15

bytes

General

I/O

locations

00A0–00A1

2

bytes

Interrupt

controller

2

00A2–00BF

30

bytes

APM

control

00C0–00DF

31

bytes

DMA

2

00E0–00EF

16

bytes

General

I/O

locations

— available to PCI bus

00F0

1

byte

BX,

Coprocessor

Error

register

00F1–016F

127

bytes

General I/O locations — available to PCI bus

0170–0177

8

bytes

Secondary

IDE

channel

01F0–01F7

8

bytes

Primary

IDE

channel

0200–0207

8

bytes

Available

0220–0227

8

bytes

SMC 37C673, Serial port 3 or 4

0228–0277

80

bytes

General

I/O

locations

—

available

to PCI bus

0278–027F

8

bytes

SMC

27C673,

LPT3

0280–02E7

102

bytes

Available

02E8–02EF

8

bytes

SMC

PC37C673,

Serial

port

3

or

4

02F8–02FF

8

bytes

COM2

0338–033F

8

bytes

SMC PC37C673, serial port 3 or 4

0340–036F

48

bytes

Available

0370–0371.

2

bytes

SMC SIO system board Plug and Play index/data

registers

0372–0375

4

bytes

Available

0376–0377

2

bytes

IDE

channel

1 command

0378–037F

8

bytes

LPT2

0380–03B3

52

bytes

Available

03B4–03B7

4

bytes

Video

03BA

1

byte

Video

03BC–03BE

16

bytes

LPT1

03C0–03CF

16

bytes

Video

03D4–03D7

4

bytes

Video

03DA

1

byte

Video

03D0–03DF

11

bytes

Available

03E0–03E7

8

bytes

Available

03E8–03EF

8

bytes

COM3

or

COM4

03F0–03F5

6

bytes

Diskette

channel

1

03F6

1

byte

Primary IDE channel command port

03F7

(Write)

1

byte

Diskette

channel

1

command

03F7,

bit

7

1

bit

Diskette

disk

change

channel

03F7,

bits

6:0

7

bits

Primary

IDE

channel

status port

03F8–03FF

8

bytes

COM1

0400–047F

128

bytes

Available

0480–048F

16

bytes

DMA

channel

high

page

registers

Appendix B. System address maps37