FIC a440 Servicehandbuch
Software Functional Overview
3-12
FIC A440 Series Service Manual
Hex Address
Device
3F0 – 3F7
Floppy Disk Controller
3F8 – 3FF
Serial Port 1
530 – 537
Windows Sound System
778 – 77B
ECP port
A79
PnP configuration – Write data port
CF8 – CFC
PCI BUS configuration register
ISA DMA Map
DMA Channel
Device
DMA 0
Unused
DMA 1
ECP
DMA 2
Floppy Disk
DMA 3
Audio
DMA 4
[Cascade]
DMA 5
Unused
DMA 6
Unused
DMA 7
Unused
Memory Map
Address Range
Length
Description
00000 ~ 9F7FFh
638KB
Base Memory
9F800 ~ 9FFFFh
2 KB
Extended BIOS Data Area
A0000 ~ BFFFFh
128 KB
Video Memory
C0000 ~ C9FFFh
40 KB
Video ROM
CA000 ~ DFFFFh
88 KB
Unused
E0000 ~ FFFFFh
128 KB
System ROM BIOS
IRQ Map
IRQ#
Description
IRQ 0
System Timer
IRQ 1
Keyboard
IRQ 2
[Cascade]
IRQ 3
SIR
IRQ 4
Serial Port
IRQ 5
Audio / VGA / USB / (LAN/MODEM)
IRQ 6
Floppy Disk Drive
IRQ 7
Parallel Port
IRQ 8
RTC Alarm
IRQ 9
Reserved for PCMCIA card
IRQ10
Cardbus
IRQ11
Reserved for PCMCIA card
IRQ12
PS/2 Mouse