Siemens SIMATIC Box PC 820, Manual

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2-4
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
2.2 Processor
Which Processor Type can be Used?
Pentium III 450/500/550 MHz in slot 1
Celeron 400, 433 im Slot 1
Clock Setting S2
S2(4) ISA Bus Frequency PCI Bus Frequency CPU Bus Frequency
on 8.25MHz 33MHz 66MHz
off 8.25MHz 33MHz 100MHz
1)
1)
Frequency is dependent on the processor and is set automatically e.g. 100 MHz for
Pentium III.
!
Warning
If you change the CPU type, you must also update the appropriate BIOS for the
CPU type. Information on suitable combinations can be found in the Product
Information Bulletin or obtained from the relevant hotline.
Standard Settings
1 2
3
ON
OFF
S2
4
Figure 2-1 Standard Setting of the Switches S2
Motherboard
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