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PCIIISA BUS Isolation
SBC/PCI/ISA Bus Structure - Physical View
SSC
(slot 18)
Keyboard (IRQ 1)
ISA BUS
Serial1
(IRQ 4)
Serial2
(IRQ 3)
Floppy
(IRQ 6)
Parallel
(IRQ 7)
Ethernet (IRQ 10)
SCSI
(IRQ 11)
Mouse
(IRQ 12)
I
PCI to PCI
PCI to PCI
Bridge
Bridge
I
I
PCI slots
PCI slots
13 (IRQ 11)
9 (IRQ 11)
14 (IRQ 15)
10 (IRQ 15)
15 (IRQ 9)
11 (IRQ 9)
16 (IRQ 10)
12 (IRQ 10)
Figure
7.
PhYSical Bus Structure Diagram
ISASlots
19,20,21
(IRQs 3 and 5)
Memory D4000-DFFF
Primary
4 - - - - - - - - -
I~
PCI BUS
PCI to PCI
Bridge
Secondary
1 - - - - - - - - - , •
I
I
PCI slots
5 (IRQ 11)
6 (IRQ 15)
7 (IRQ 9)
8 (IRQ 10)
PCI BUS
PCI to PCI
Bridge
Tertiary
4--. - - - - - - " -
PCI BUS
PCI slots
1 (IRQ 11)
2 (IRQ 15)
3 (IRQ 9)
4 (IRQ 10)
Chapter 4. PCIIISA BUS and Adapters
17
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