Epson ActionTower 3000 Computer - Manuel (Page 118)

Hardware Interrupts
IRQ no. Function
IRQ0 Timer output
IRQ1 Keyboard
IRQ2 Cascade from IRQ controller 2
IRQ3 Serial port 2
IRQ4 Serial Port 1
IRQ5 Parallel port 2
IRQ6 FDD controller
IRQ7 Parallel port 1
IRQ8 Real-time clock
IRQ9 Reserved
IRQ10 Reserved
IRQ11 Reserved
IRQ12 PS/2 mouse
IRQ13 Math coprocessor
IRQ14 HDD controller
IRQ15
Reserved
Specifications A-13