Detailed descriptions
16.4 System resources
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
16-19
I/O address (hex)
0CFC
0CFF
4
PCI configuration data
fixed
0D00
0EFF
512
Unused
0F00
0F4F
80
Super IO
0F50
0FFF
176
Unused
1000
10FF
256
Internal allocation
1180
11FF
128
Internal allocation
1800
187F
128
Internal allocation
8800
8BFF
1023
SATA RAID Controller
8C00
FEFF
29288 Unused at SATA-RAID
8870
8897
39
PATA RAID Controller
8898
FEFF
30311 Unused at PATA-RAID
1880
886F
28655 Unused
FF00
FF0F
16
EIDE bus master register
16.4.2.2 Interrupt assignments
Interrupt
Description
Comment
IRQ0
Timer output 0
fixed
IRQ1
Keyboard
fixed
IRQ2
Cascaded (IRQ9)
fixed
IRQ3
Serial port 2
2)
IRQ4
Serial port 1
2)
IRQ5
PCI, Plug and Play
1)
Priority interrupt for PROFIBUS
IRQ6
FD controller
fixed
IRQ7
Parallel port 1
2)
IRQ8
Real-time clock (RTC)
fixed
IRQ9
PCI, Plug and Play
(Redirected IRQ2)
1) 2)
Priority interrupt for Ethernet and
RAID controller
IRQ10
PCI, Plug and Play
1) 2)
Priority interrupt for VGA
IRQ11
Reserved for SOM or ISA modules
2)
IRQ12
PS/2 mouse
2)
IRQ13
Numeric processor
fixed
IRQ14
1. HD controller 1 (primary)
2)
IRQ15
2. HD controller 2 (secondary)
2)