Artesyn ATCA 7370 / ATCA 7370-S Installation and Use (January 2015) - Manual (Page 117)

Maps and Registers
ATCA-7370/ATCA-7370-S Installation and Use (6806800P54H) 117
6.1.1 PIC (Non-APIC) D31:F0 Interrupt Mapping
Table 6-2 Non-APIC (PIC mode/8259 Mode) Interrupt Mapping
8259 IRQ Typical Interrupt Source Interrupt Source
Master 0 Internal 8254 Counter 0, Timer 0
(HPET)
1 Keyboard IRQ1 via SERIRQ
2 Internal Slave 8259 INTR output
3 Serial Port A IRQ3 via SERIRQ, PIRQ#
4 Serial Port B IRQ4 via SERIRQ, PIRQ#
5 Parallel/Generic IRQ5 via SERIRQ, PIRQ#
6 Floppy IRQ6 via SERIRQ, PIRQ#
7 Parallel/Generic IRQ7 via SERIRQ, PIRQ#
Slave 8 Internal RTC Internal RTC, Timer 1
(HPET)
9 Generic IRQ9 via SERIRQ, SCI,
TCO, or PIRQ#
10 Generic IRQ10 via SERIRQ, SCI,
TCO, or PIRQ#
11 Generic IRQ11 via SERIRQ, SCI,
TCO, or PIRQ# or Timer#2
(HPET)
12 PS/2 Mouse IRQ12 via SERIRQ, SCI,
TCO, or PIRQ# or Timer#3
(HPET)
13 Internal State Machine output
based on processor
FERR# assertion. May
optionally be used for SCI
or TCO interrupt if FERR#
not needed.