Siemens PC 677B Operations Instructions Page 210

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Detailed descriptions
17.3 System resources
SIMATIC Panel PC 677B
210 Operating Instructions, 05/2007, A5E01035609-01
17.3.2.4 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 Software 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 3,2GB System memory 4 GB
memory configuration
Depends on memory
configuration
D000 0000 FFEF FFFF 767 MB Configuration space
FFF0 0000 FFFF FFFF 1 MB Firmware HUB
1)
Optional memory allocation, depending on settings in BIOS Setup
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