IBASE SI-28 - Manual (Page 27)

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PCIE Configuration
The fields under PCIE Configuration features settings for Primary Dual Slot Config,
GPP Slots Power Limit, GFX ports, GPPs and NB-SB port features.
Internal Graphics Mode
The settings for IB828 are Disabled and UMA; while the IB828 has additional settings
of Sideport and UMA+sideport.
Init Display First
The default setting is IGX.
NB Power Management
The default setting is Auto.
Memory Hole At 15M-16M
In order to improve performance, certain space in memory can be reserved for ISA
cards. This memory must be mapped into the memory space below 16 MB. The
choices are Enabled and Disabled.
System BIOS Cacheable
The setting of Enabled allows caching of the system BIOS ROM at F000h-FFFFFh,
resulting in better system performance. However, if any program writes to this
memory area, a system error may result.