User Guide

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2.2.5 Math Coprocessor .................................... 2-13
2.2.6 Video Display............................................ 2-13
2.2.7 Communication Status.............................. 2-14
2.2.8 Enhanced IDE Features ........................... 2-14
2.2.9 Num Lock After Boot................................. 2-15
2.2.10 Memory Test............................................. 2-15
2.2.11 Large Memory Support Mode ................... 2-16
2.2.12 Auto-Configuration Mode.......................... 2-16
2.2.13 Fast Boot Mode......................................... 2-16
2.3 Advanced System Configuration.............................. 2-17
2.3.1 Shadow RAM............................................ 2-18
2.3.2 Internal Cache (CPU Cache) .................... 2-19
2.3.3 External Cache ......................................... 2-19
2.3.4 E0000h - FFFFFh (System BIOS) ............ 2-20
2.3.5 C0000h - C7FFFh (Video BIOS)............... 2-20
2.3.6 Memory at 15MB-16MB............................ 2-20
2.3.7 DRAM Lead-off Timing (Read/Write) ....... 2-20
2.3.8 RAS to CAS Delay.................................... 2-21
2.3.9 DRAM Write Burst Timing ........................ 2-21
2.3.10 DRAM Read Burst Timing ........................ 2-22
2.4 PCI System Configuration........................................ 2-23
2.4.1 PCI IRQ Setting ........................................ 2-23
2.4.2 VGA Palette Snoop................................... 2-24
2.5 Non-PnP ISA Card Configuration ............................ 2-25
2.5.1 System Resources Used by Non-PnP
ISA Cards.................................................. 2-27
2.5.2 Expansion ROM Region ........................... 2-27