User`s manual

4.1 PCI Interrupts and Arbitration
Figure 4–1 Interrupt Control and PCI Arbitration
LJ04140A.AI5
ISA
Slots
CPU
PCI
Slot 3
PCI-to-ISA
Bridge
Clock
Multiplier
Jumpers
Combination
Control
Keyboard/
Mouse
Control
System
Interrupt
PLDs
pci_req_s3_l
pci_gnt_s3_l
PCI
Slot 2
pci_req_s2_l
pci_gnt_s2_l
PCI
Slot 1
pci_req_s1_l
pci_gnt_s1_l
PCI
Slot 0
pci_req_s0_l
sio_int
pci_gnt_s0_l
21071-DA
sys_irq0
pci_isa_irq (0)
(1)
(2)
cpu_irq
<5,2:0>
irq_resetd_l
jmp_irq<2:0>
rtc_irq_l
nmi
drq<7:5,3:0>
<7:3> <12, 1>
irq<15:3, 1>
MUX
pci_inta<3:0>
pci_intb<3:0>
pci_intc<3:0>
pci_intd<3:0>
PCI Bus
4–2 Functional Elements