Epson 890 SERIES 用户手册

EPSON ActionNote 890 Series

000000H

640KB base memory

reserved for graphics display area

0C0000H

Reserved

for VGA BIOS

Power Management Utility

0F0000H

64KB for system BIOS

100000H

Extended memory

Duplicated code assignment at address 0E0000

FFFFFFH

Channel

DMA1

Device

Available

Optional Sound Card

I Interrupt

 Function

IRQ0

IRQ1

Timer

   Keyboard

 DMA2

 Diskette Controller

I

DMA5

 DMA7

Cascade for CTRL 1

Available

 Available

 Available

 IRQ2

 Cascade

I

 IRQ3

  COM2 (2F8H) (COM4 02E8)

I

IRQ4

  COM1 (3F8H) (COM3 03E8)

IRQ5

IRQ6

Optional sound card

Diskette Controller

 IRQ7

 LPT1

IRQ8

IRQ9

Clock/Calendar

I 

Video

 IRQ10

 Available

IRQ12

Available

I 

Touchpad

 IRQ13

 Reserved for Coprocessor

I

IRQ14

IRQ15

Hard Disk Drive Controller

I 

Available