1-6 Technical Information
Table 1-4 Interrupt Level Assignments
Interrupt
Assignment
IRQ 0
Counter/Timer
IRQ 1
Keyboard
IRQ 2(9)
Cascade (INT output from slave)
IRQ 3
COM2 and COM4
IRQ 4
COM1 and COM3
IRQ 5
Parallel Port 2/Audio (if present)
IRQ 6
Diskette Drive Controller
IRQ 7
Parallel Port 1
IRQ 8
Real-time clock
IRQ 10
Available/Audio (if present)
IRQ 11
Network Interface Board
IRQ 12
PS/2 mouse
IRQ 13
Coprocessor
IRQ 14*
Primary IDE
IRQ 15*
Secondary IDE
NETWORK INTERFACE
The computer comes equipped with a network interface board installed in one of the
expansion slots in the system unit. The three connectors on the board allow connection to
an Ethernet network and communication with other computers. Access to the connectors is
provided at the rear of the system unit. Figure 1-1 shows the location of the network
interface board and the three connectors. For more information, see Section 2 of this
addendum.
