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The default value is Enabled. Enabled Video shadow is enabled Disabled Video shadow is disabled · C8000 - CFFFF Shadow / D0000 - DFFFF Shadow These categories determine whether optional ROM will be copied to RAM by 16 byte. The default value are Disabled. Enabled Optional shadow is enabled. Disabled Optional shadow is disabled. 4-13 BIOS Configuration 4.7. CHIPSET FEATURES SETUP Figure 4.4: Chipset Features Setup # These three items will be available when Auto Configuration is set to Disabled. *These two item will be available when SDRAM Clock Frequency is set to Disabled. • Auto Configuration The default value is Enabled. Enabled For 50 - 60ns EDO DRAM Timing. Disabled For slow speed DRAM Timing. · RAS Pulse width Refresh The default value is 4T 4T Set RAS Pulse width Refresh to 4T. 5T Set RAS Pulse width Refresh to 5T. 6T Set RAS Pulse width Refresh to 6T. 7T Set RAS Pulse width Refresh to 7T. 4-14 6SMM7 · RAS Precharge Time The default value is 2T 2T Set RAS Precharge Time to 2T. 3T Set RAS Precharge Time to 3T. 4T Set RAS Precharge Time to 4T. 5T Set RAS Precharge Time to 5T. · RAS to CAS Delay The default value is 2T 2T Set RAS to CAS Delay to 2T. 3T Set RAS to CAS Delay to 3T. 4T Set RAS to CAS Delay to 4T. 5T Set RAS to CAS Delay to 5T. · ISA Bus Clock Frequency The default value is PCICLK/4 PCICLK/4 Set ISA Bus Clock Frequency to PCICLK/4. PCICLK/3 Set ISA Bus Clock Frequency to PCICLK/3. 7.159MHz Set ISA Bus Clock Frequency to 7.159MHz. · Starting Point of Paging The default value is 1T 1T Set Starting Point of Paging to 1T. 2T Set Starting Point of Paging to 2T. 4T Set Starting Point of Paging to 4T. 8T Set Starting Point of Paging to 8T. · SDRAM CAS Latency The default value is 3T 2T Set SDRAM CAS Latency to 2T. 3T Set SDRAM CAS Latency to 3T. 4-15 BIOS Configuration · SDRAM WR Retire Rate The default value is X-1-1-1 X-1-1-1 Set SDRAM WR Retire Rate to X-1-1-1. X-2-2-2 Set SDRAM WR Retire Rate to X-2-2-2. · CPU to PCI Burst Mem. WR The default value is Enabled Enabled Enabled CPU to PCI Burst Mem. WR. Disabled Disabled this function. · System BIOS Cacheable The default value is Enabled. Enabled Enable System BIOS cacheable. Disabled Disable System BIOS cacheable. · Video RAM Cacheable The default value is Enabled. Enabled Enable video RAM cacheable. Disabled Disable video RAM cacheable. · Memory Hole At 15M-16M The default value is Disabled. Disabled Normal Setting. Enabled Set Address=15~16MB remap to ISA BUS. 4-16 6SMM7 · AGP Aperture Size The default value is 64MB. 4MB Set AGP Aperture Size to 4MB. 8MB Set AGP Aperture Size to 8MB. 16MB Set AGP Aperture Size to 16MB. 32MB Set AGP Aperture Size to 32MB. 64MB Set AGP Aperture Size to 64MB. 128MB Set AGP Aperture Size to 128MB. 256MB Set AGP Aperture Size to 256MB. · Concurrent function (MEM) The default value is Enabled. Disabled Disabled Concurrent function (MEM). Enabled Enabled Concurrent function (MEM). · Concurrent function (PCI) The default value is Enabled. Disabled Disabled Concurrent function (PCI). Enabled Enabled Concurrent function (PCI). · CPU Pipeline Control The default value is Enabled. Disabled Disabled this function. Enabled Enabled CPU Pipeline Control function. · PCI Delay Transaction The default value is Enabled. Disabled Disabled PCI Delay Transaction Function. Enabled Enabled PCI Delay Transaction Function. · SDRAM Synchronous Mode 4-17 BIOS Configuration The default value is Enabled. Disabled Disabled this Function. Enabled Enabled SDRAM Synchronous Mode Function. · SDRAM Clock Frequency The default value is 100MHz. 66MHz Set SDRAM Clock Frequency to 66MHz. 75MHz Set SDRAM Clock Frequency to 75MHz. 83MHz Set SDRAM Clock Frequency to 83MHz. 100MHz Set SDRAM Clock Frequency to 100MHz. · CPU Clk High Than SDRAM The default value is No. No Disabled this Function. Yes Enabled CPU Clk High Than SDRAM Function. · Auto Detect DIMM/PCI Clk The default value is Enabled. Disabled Disabled Auto Detect DIMM/PCI Function. Enabled Enabled Auto Detect DIMM/PCI Function. · Spread Spectrum The default value is Disabled. Disabled Normal 0.25%(Cntr) Set Spread Spectrum 0.25%(Cntr) 0.50%(Down) Set Spread Spectrum 0.50%(Down) 4.8. POWER MANAGEMENT SETUP 6SMM7 Figure 4.5: Power Management Setup # These five items will show up when Power Up by Alarm is Enabled. • Power Management The default value is User Define. Disabled Disabled this function. User Define Set Power Management to User Define . Min Saving Set Power Management to Min Saving . Max Saving Set Power Management to Max Saving . · PM Control by APM The default value is Yes. Yes Enable software APM function. No Disable software APM function. · Video Off Option The default value is Susp,Stby->Off. Susp,Stby->Off Set Video Off Option to Susp,Stby->Off. Suspend->Off Set Video Off Option to Suspend->Off. All Modes->Off Set Video Off Option to All Modes->Off. Always On Set Video Off Option to Always On. · Video off Method The default value is V/H SYNC+Blank. V/H SYNC+Blank BIOS will turn of...