Technical specifications
8.5 Hardware description
SIMATIC IPC847D
Operating Instructions, 01/2014, A5E32997454-AA
167
PCI / PCIe cards and the on-board PCI / PCIe devices require PCI interrupt channels. These
interrupt channels can be shared and are plug-and-play compatible, that is, several devices
can share the same interrupt. The IRQ is assigned automatically.
PCI interrupt channels must be derived from the PIC interrupt pool, that is PCI modules also
use PIC resources. These IRQ channels are assigned automatically.
The Host PCI IRQ channels A to H are permanently assigned in APIC mode. These default
settings cannot be modified.
The Host PCI IRQ channels A to H in PIC mode are assigned automatically in BIOS. The
assignment can be changed by disabling functions. Resulting free IRQs are assigned to the
slots.
Memory address assignments
PCI VGA modules can be operated with expansion ROM up to 48K.
Description of the basic function
Possible alternative function
Conventional system memory
Conventional system memory extended
XBDA, extended Bios Data Area
VGA graphics refresh memory
Shared SMM for power management
SW graphics / text refresh memory
VGA graphics/text refresh memory
1
1
Not used (no RAID, no PXE)
1
1
Not used (no RAID, with PXE)
1
1
1
1
000E 4000 000F FFFF 112 K System BIOS
0010 0000 CFFF FFFF 3.5 GB System memory at ≥ 4 GB memory
Depends on memory configuration
E000 0000 FFEF FFFF 511
PCIe Configuration Space
1
Optional memory allocation, depending on settings in BIOS Setup
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