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1.3
Hardware Configuration and Specification
1.3.1
Memory Address Map
Table 1-2
Memory Address Map
Address Range
000000 - 09FFFF
0A0000 - 0BFFFF
0C0000 - 0CBFFF
0F0000 - 0FFFFF
100000 - top limited
FE0000 - FFFFFF
1.3.2
Interrupt Channel Map
Table 1-3
Interrupt Channel Map
Priority
Interrupt Number
1
SMI
2
NMI
IRQ 0
3
4
IRQ 1
IRQ 2
5
IRQ 8
6
IRQ 9
7
IRQ 10
8
9
IRQ 11
10
11
IRQ 12
12
IRQ 13
13
IRQ 14
14
IRQ 15
15
IRQ 3
16
IRQ 4
17
IRQ 5
18
IRQ 6
19
IRQ 7
1-4
Definition
640 KB memory
128 KB video RAM
Video BIOS
64 KB system BIOS
Extended memory
256 KB system ROM
Power management unit
Parity error detected, I/O channel error
Interval timer, counter 0 output
Keyboard
Interrupt from controller 2 (cascade)
Real-time clock /
Cascaded to INT 0AH (IRQ 2) / Audio / PCMCIA/Internal Modem
Audio (option) / PCMCIA / Internal modem / Serial communication
port 2 / PCMCIA / USB
Audio (option) / PCMCIA / Internal modem / Serial communication
port 1 / PCMCIA
PS/2 mouse
INT from coprocessor
Hard disk controller / PCMCIA controller
CD-ROM controller / PCMCIA controller
Serial communication port 2 / Internal modem / Audio / PCMCIA
Serial communication port 1 / Internal modem / Audio / PCMCIA
Parallel port (option) / Audio / PCMCIA
Diskette controller
Parallel port (option) / Audio / Internal Modem
Base memory
Reserved for graphics display buffer
Video BIOS
System BIOS
SIMM memory
Duplicate of code assignment at 0E0000-0FFFFF
Interrupt Source
Function
Service Guide
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