Siemens SIMATIC PC 847B, Руководство по эксплуатации

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Detailed descriptions
16.4 System resources
SIMATIC Rack PC 847B
Operating Instructions, 06/2008, A5E02203168-01
159
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.
16.4.2.3 Memory address assignments
PCI VGA modules can be operated with expansion ROM up to 48K.
Address
from
to
Size Description of the basic
function
Possible alternative
function
0000 0000 0007 FFFF 512K Conventional system memory
0008 0000 0009 F7FF 127K Conventional system memory
extended
0009 F800 0009 FFFF 2K XBDA, extended Bios Data
Area
000A 0000 000A FFFF 64K VGA graphics refresh memory Shared SMM for power
management
000B 0000 000B 7FFF 32K SW graphics / text refresh
memory
Not used
000B 8000 000B FFFF 32K VGA graphics/text refresh
memory
000C 0000 000C BFFF 48K VGA BIOS expansion
000C 0000 000C E9FF 59K
1)
VGA BIOS Always occupied
000C F000 000D FFFF 68K
1)
Not used (no RAID, no PXE) via EMM High DOS
Memory
000C F000 000C FFFF 4K
1)
PXE
000D 0000 000D FFFF 64K
1)
Not used (no RAID, with PXE) via EMM High DOS
Memory
000C F000 000D 37FF 18K
1)
RAID
000D 3800 000D FFFF 50K
1)
Not used (RAID, no PXE) via EMM High DOS
Memory
000C F000 000D 47FF 22K
1)
RAID and PXE
000D 4800 000D FFFF 46K
1)
Not used
000E 0000 000E 1FFF 8K USB
000E 2000 000E 3FFF 8K DMI data
000E 4000 000F FFFF 112K System BIOS
0010 0000 CFFF FFFF 3.2 GB System memory 4 GB memory
configuration
Depends on memory
configuration
E000 0000 FFEF FFFF 511 MB PCIe Configuration Space
FFF0 0000 FFFF FFFF 1 MB Firmware HUB
1)
Optional memory allocation, depending on settings in BIOS Setup