WSB-9454 CPU Card
Page 195
D.2 1st MB Memory Address Map
Memory address Description
00000-9FFFF System memory
A0000-BFFFF VGA buffer
F0000-FFFFF System BIOS
1000000-
Extend BIOS
Table D-2: 1
st
MB Memory Address Map
D.3 IRQ Mapping Table
IRQ0 System Timer IRQ8 RTC clock
IRQ1 Keyboard IRQ9 ACPI
IRQ2 Available IRQ10
LAN
IRQ3 COM2 IRQ11
LAN/USB2.0/SATA
IRQ4 COM1 IRQ12
PS/2 mouse
IRQ5 SMBus Controller IRQ13
FPU
IRQ6 FDC IRQ14
Primary IDE
Table D-3: IRQ Mapping Table
D.4 DMA Channel Assignments
Channel Function
0 Available
1 Available
2 Floppy disk (8-bit transfer)
3 Available
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available
Table D-4: IRQ Mapping Table
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