Specifications

Table D–3 (Cont.) I/O Address Map
Range (Hex) Function
0C84 Baseboard enable
0C85–0CFF Baseboard configuration
Table D–4 Interrupt Map
Priority
Interrupt
Controller
Interrupt
Number Interrupt Source
1 1 IRQ0 System timer
2 1 IRQ1 Keyboard controller
3–10 1 IRQ2 Interrupt controller 2
3 2 IRQ8 Real-time clock
4 2 IRQ9 Available for EISA options
5 2 IRQ10 Available for EISA/ISA options
6 2 IRQ11 Available for EISA/ISA options
7 2 IRQ12 Mouse
8 2 IRQ13 Numeric coprocessor
9 2 IRQ14 IDE hard disk drive (available for
EISA/ISA options if no IDE)
10 2 IRQ15 Available for EISA/ISA options
11 1 IRQ3 COMx
1
12 1 IRQ4 COMx
1
13 1 IRQ5 LPTy
2
14 1 IRQ6 Diskette drive
15 1 IRQ7 LPTy
2
1
Can be COM1 through COM4.
2
Can be either LPT1 or LPT2.
D–4 Device Mapping