Sony 486DX User Manual

AR-B1474 User¡

¦s Guide

2-3

000-01F

DMA controller 1

020-021

Interrupt controller 1

022-023

M1429 chipset address

040-04F

Timer 1

050-05F

Timer 2

060-06F

8042 keyboard/controller

070-071

Real-time clock (RTC), non-maskable interrupt (NMI)

080-09F

DMA page registers

0A0-0A1

Interrupt controller 2

0C0-0DF

DMA controller 2

0F0

Clear Math Co-processor

0F1

Reset Math Co-processor

0F8-0FF

Math Co-processor

170-178

Fixed disk 1

1F0-1F8

Fixed disk 0

201

Game port

208-20A

EMS register 0

210-213

SSD

214-215

Watchdog

218-21A

EMS register 1

278-27F

Parallel printer port 3 (LPT 3)

290-293

SSD

294-295

Watchdog

2E8-2EF

Serial port 4 (COM 4)

2F8-2FF

Serial port 2 (COM 2)

310-313

SSD

314-315

Watchdog

378-37F

Parallel printer port 2 (LPT 2)

380-38F

SDLC, bisynchronous 2

390-393

SSD

394-395

Watchdog

3A0-3AF

Bisynchronous 1

3B0-3BF

Monochrome display and printer port 1 (LPT 1)

3C0-3CF

EGA/VGA adapter

3D0-3DF

Color/graphics monitor adapter

3E8-3EF

Serial port 3 (COM 3)

3F0-3F7

Diskette controller

3F8-3FF

Serial port 1 (COM 1)