Technical specifications   
8.5 Hardware description 
  SIMATIC IPC847D 
164  Operating Instructions, 01/2014, A5E32997454-AA 
 
System resources used by the BIOS/DOS 
The following tables describe the system resources for the factory state of the device. 
 
Description of the basic function 
Possible alternative function 
Programmable interrupt controller 
System CMOS/real-time clock 
00A0  00A1  2  Programmable interrupt controller   
Switchable in Setup, then free 
Switchable in Setup, then free