Isa Interrupts - Samsung AlphaPC 164UX Technical Reference Manual

Interrupts
Table 3–3 ISA Interrupts
Interrupt
Number Interrupt Source
IRQ0 Internal timer
IRQ1 Keyboard
IRQ2 Interrupt from controller 2
IRQ3 COM2
IRQ4 COM1
IRQ5 Available
IRQ6 Diskette (floppy)
IRQ7 Parallel port
1
*IRQ8 Reserved
IRQ9 Available
IRQ10 Available
IRQ11 Available
IRQ12 Mouse
IRQ13 Available
IRQ14 IDE
IRQ15 IDE
1
The * symbol indicates an active low signal.
Functional Description
3–14