System Memory Map; Hardware Interrupts; Dma Assignments - Epson ActionNote 890 Programming Instructions Manual

Hardware Interrupts

I Interrupt
Function
IRQ0 Timer
IRQ1
Keyboard
IRQ2
Cascade
IRQ3 COM2 (2F8H) (COM4 02E8)
IRQ4
COM1 (3F8H) (COM3 03E8)
IRQ5 Optional sound card
IRQ6 Diskette Controller
IRQ7
LPT1
IRQ8 Clock/Calendar
I
IRQ9 Video
IRQ10
Available
Available
IRQ11
I
IRQ12 Touchpad
IRQ13 Reserved for Coprocessor
IRQ14 Hard Disk Drive Controller
I
IRQ15 Available

System Memory Map

000000H
0A0000H
0C0000H
0E0000H
0EA000H
0F0000H
100000H
FFE000H
Duplicated code assignment at address 0E0000
FFFFFFH

DMA Assignments

Channel
DMA0
DMA1
DMA2
I
DMA3
I
DMA4
DMA5
DMA6
DMA7
I
8/25/95
EPSON ActionNote 890 Series
640KB base memory
reserved for graphics display area
128KB
Reserved
for VGA BIOS
40KB
Power Management Utility
64KB for system BIOS
Extended memory
Device
Available
Optional Sound Card
Diskette Controller
ECP
Cascade for CTRL 1
Available
Available
Available
I
AN890-9