Foxconn P55A Series User Manual download pdf (Page 37)

Advanced Chipset Features

► Memory Remap Feature

This item is used to enable/disable memory remapping around memory hole.

PCI doesn't actually care much which addresses are used, but by convention the PC platform

puts them at the top of the 32-bit address space. For many years it wasn't possible or practical to

put that much RAM into a PC. But now it is, so it's up to the memory controller and host bridge to

gure out what to do. Many systems cause that high RAM to simply be ignored, resulting in the

loss of effective RAM. More complex systems will take the RAM that would occupy that 3.5-4GB

address space and re-map it into the 4.0-4.5GB address space. The RAM doesn't care because

it's just an array of storage cells, it's up to the memory controller to associate addresses with

those storage cells. Of course, that only works if you're using a 64-bit (or 32bit physical address

extension (PAE) enabled) OS that can deal with physical addresses larger than 32 bits. Once

this option is enabled, BIOS will display the true size of memory installed.

► Initate Graphic Adapter

This item is used to select which graphics controller is used as the primary boot device.

► SLP_S4# Min. Assertion Width

SLP_S4# is a signal for power plane control. This signal shuts off power to all non-critical

systems when in the S4 (Suspend to Disk) or S5 (Soft Off) state.

This setting indicates the minimum assertion width of the SLP_S4# signal to ensure that the

DRAMs have been safely power-cycled. Setting values are: [4 to 5 seconds], [3 to 4 seconds],

[2 to 3 seconds], [1 to 2 seconds].

Advanced Chipset Features

IMC Type : *Field Family IMC Help Item

Management Engine Version : 6.0.0.1126

Memory Remap Feature [Enabled]

PCI MMIO Allocation: 4GB To 3328MB

Initate Graphic Adapter [PCIE/PCI]

SLP_S4# Min. Assertion Width [1 to 2 seconds]

↑↓←→:Move Enter:Select +/-/:Value F10:Save ESC:Exit F1:General Help

F9:Optimized Defaults

[Enabled]

ENABLE: Allow

remapping of

overlapped PCI memory

above the total

physical memory.

DISABLE: Do not allow

remapping of memory.

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Foxconn P55A Series User Manual Page 37