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EPSON ActionNote 890 Series
System Memory Map
000000H
640KB base memory
0A0000H
128KB
reserved for graphics display area
0C0000H
Reserved
0E0000H
40KB
for VGA BIOS
0EA000H
Power Management Utility
0F0000H
64KB for system BIOS
100000H
Extended memory
FFE000H
Duplicated code assignment at address 0E0000
FFFFFFH
DMA Assignments
Hardware Interrupts
Channel
DMA0
DMA1
Device
Available
Optional Sound Card
I Interrupt
Function
IRQ0
IRQ1
Timer
Keyboard
DMA2
Diskette Controller
I
DMA3
DMA4
DMA5
DMA6
DMA7
ECP
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
IRQ11
IRQ12
Available
I
Touchpad
IRQ13
Reserved for Coprocessor
I
IRQ14
IRQ15
Hard Disk Drive Controller
I
Available
8/25/95
AN890-9