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Detailed descriptions
16.4 System resources
SIMATIC Rack PC 840 V2
16-18
Operating Instructions, Edition 05/2006, A5E00248055-04
I/O address (hex)
00A2
00BF
30
Motherboard resources
00C0
00DF
32
DMA controller
00E0
00EF
16
Motherboard resources
00F0
00FE
15
Numeric data processor
0110
016F
112
Unused
0170
0177
8
Secondary EIDE channel
0178
01EF
120
Unused
01F0
01F7
8
Primary EIDE channel
Switchable in Setup,
then free
01F8
01FF
116
Unused
0200
0273
16
Reserved for game port
0274
0277
4
ISA PNP Read Data Port
0279
0279
4
ISA PNP Read Data Port
027C
02E7
108
Unused
02E8
02EF
8
Reserved
02F8
02FF
8
COM2
Switchable in Setup,
then free
0300
031F
32
Unused
0320
032F
16
Unused
0330
033F
16
Unused
0340
035F
32
Unused
0360
0367
8
Unused
0370
0371
2
SOM
0372
0375
4
Unused
0376
0376
1
Secondary EIDE channel
0378
037F
8
LPT 1
Switchable in Setup,
then free
0380
03AF
48
Unused
03B0
03BB
12
S3 Graphics Pro Savage DDR
03BC
03BF
4
Reserved
03C0
03DF
16
S3 Graphics Pro Savage DDR
03E0
03E7
8
Unused
03E8
03EF
6
Reserved
03F0
03F5
6
Standard floppy disk controller
03F6
03F6
1
Primary EIDE channel
03F7
03F7
1
Standard floppy disk controller
03F8
03FF
8
COM1
Switchable in Setup,
then free
Dynamic area; resources are managed via Plug and Play
0400
0777
888
Unused
0778
077F
8
ECP LPT 1
0780
0CF7
1400
unused
0CF8
0CFB
4
PCI configuration index
fixed