Siemens SIMATIC IPC647D Operating Instructions Manual page 163

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 by the BIOS. The
assignment can be changed by disabling functions. You can also assign free IRQs to the
host PCI IRQ line in the BIOS menu "PCI Configuration".
Memory address assignments
PCI VGA modules can be operated with expansion ROM up to 48K.
Address
from to
0000 0000 0007 FFFF
0008 0000 0009 F7FF
0009 F800 0009 FFFF
000A 0000 000A FFFF
000B 0000 000B 7FFF
000B 8000 000B FFFF
000C 0000 000C BFFF
000C 0000 000C E9FF
000C F000 000D FFFF
000C F000 000C FFFF
000D 0000 000D FFFF
000C F000 000D 37FF
000D 3800 000D FFFF
000C F000 000D 47FF
000D 4800 000D FFFF
000E 0000 000E 1FFF
000E 2000 000E 3FFF
000E 4000 000F FFFF
0010 0000 CFFF FFFF
E000 0000 FFEF FFFF
FFF0 0000 FFFF FFFF
Optional memory allocation, depending on settings in BIOS Setup
1
SIMATIC IPC647D
Operating Instructions, 01/2014, A5E32996306-AA
Size Description of the basic function
512 K Conventional system memory
127 k Conventional system memory extended
2 K XBDA, extended Bios Data Area
64 K VGA graphics refresh memory
32 K SW graphics / text refresh memory
32K VGA graphics/text refresh memory
48 K VGA BIOS expansion
59 K VGA BIOS
1
68 K Not used (no RAID, no PXE)
1
4 K PXE
1
64 K Not used (no RAID, with PXE)
1
18 K RAID
1
50 K Not used (RAID, no PXE)
1
22 K RAID and PXE
1
46 K Not used
1
8 k USB
8 k DMI data
112 K System BIOS
3.25 GB System memory 4 GB memory
configuration
511 MB PCIe Configuration Space
1 MB Firmware HUB
32 GB RAM expansion
Technical specifications
8.5 Hardware description
Possible alternative function
Shared SMM for power management
Not used
Always occupied
via EMM High DOS Memory
via EMM High DOS Memory
via EMM High DOS Memory
Depends on memory configuration
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