52
Appendix C. Resources Map
1
st MB Memory Address Map
Memory address
Description
00000-9FFFF
SYSTEM MEMORY
A0000-BFFFF
VGA BUFFER
C0000-CFFFF
VGA BIOS
E0000-FFFFF
SYSTEM BIOS
100000
EXTEND MEMORY
IRQ Mapping Chart
IRQ0 System
Timer IRQ8
RTC
clock
IRQ1 Keyboard
IRQ9 SCI IRQ user by ACPI bus
IRQ2 IRQ
Controller
IRQ10 INTEL Network connection
IRQ3 COM2
IRQ11 ICH4 USB2.0 / AC97 audio
IRQ4 COM1
IRQ12 PS/2 mouse
IRQ5 ACPI for PCI IRQ
IRQ13 FPU
IRQ6 FDC
IRQ14 Primary
IDE
IRQ7 Printer
IRQ15 Secondary
IDE
DMA Channel Assignment
Channel Function
0
Available
1
Available
2
Floppy disk
3
Available
4
Cascade for DMA controller 1
5
Available
6
Available
7
Available
Summary of Contents for PCISA-6770 Series
Page 10: ......
Page 52: ...51 Digital Output is 1001b...