IBM SBC-659P manual Advanced Chipset Features, Sdram CAS Latency Time, Sdram Cycle Time Tras/Trc

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Advanced Chipset Features

SDRAM CAS Latency Time

When synchronous DRAM is installed, the number of clock cycles of CAS latency depends on the DRAM timing. Do not reset this field from

the default value specified by the system designer.

SDRAM Cycle Time Tras/Trc

Select the number of SCLKs for an access cycle.

The choices: 5/7, 7/9 disable.

SDRAM RAS-to-CAS Delay

This field lets you insert a timing delay between the CAS and RAS strobe signals, used when DRAM is written to, read from, or refreshed. Fast gives faster performance; slow gives more stable performance. This field applies only when synchronous DRAM is installed in the system.

54SBC-659P User Manual

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Contents SBC-659P Copyright Notice Acknowledgments Aaeon Customer Services Message to the CustomerProduct Warranty Packing list Page Contents Award Bios Setup Drivers and Utilities General Information Introduction Features Specifications Standard Half-size SBC functionsCompact Flash socket onboard Mechanical and environmental Board Layout Board Dimensions Installation Safety precautions Removing the CPUInstalling a CPU Setting jumpers Installing Sodimm Supplementary information about DimmJumpers Jumpers FunctionConnectors Connector FunctionLocating Jumpers and Connectors Locating of Solder Side Connectors Mechanical Drawing Mechanical Drawing Clear Cmos JP2 Front Panel JP1System Frequency JP3 COM2 Ring, +5V, +12V JP4 RS-232/422/485 COM2JP5,JP6 Setting Digital Video Output Connector CN1 Pin SignalExternal Power On Connector CN2 IDE Hard Drive Connector CN3 USB connector CN5, CN6 Floppy Drive Connector CN7 VGA connector CN8 VGA display connector CN8Audio Connector CN9 Ethernet ConnectorsCN12,CN10 COM 1 CN 13 & COM 2 CN 11 Serial Ports Internal Keyboard Connector CN15 Power connector CN16Parallel port connector CN17 Parallel port IRQIrDA Connector CN19 PS/2 keyboard and mouse connectorsCN18CPU Fan power connectors CN20 North bridge chip Fan Connector CN21Compact Flash Connector CN22 Award Bios Setup Starting setup To Enter Setup Before Boot Press DEL KEYSetup keys These keys helps you navigate in Award BiosCase of Problems Getting HelpMain Setup Menu PnP/PCI Configuration Load Fail-Safe DefaultsLoad Optimized Defaults Set Supervisor/User PasswordStandard Cmos Features Date and Time ConfigurationAward Bios Setup Drive a Drive B Memory Halt OnBase Memory Extended Memory Other MemoryAdvanced Bios Features Virus WarningProcessor Number Feature Quick Power On Self TestFirst/Second/Third/Fourth Boot Device CPU Internal Cache/External CacheBoot Up Floppy Seek Boot Up NumLock StatusBoot Up System Speed Swap Floppy DriveTypematic Rate Setting- Key strokes repeat at a Typematic Delay Msec- Sets the delay timeTypematic Rate Chars/Sec- Sets the number Security OptionHDD S.M.A.R.T Capability Report No FDD For WIN 95- ReportEPA Logo Select Small LogoEPA showAdvanced Chipset Features Sdram RAS-to-CAS DelaySdram CAS Latency Time Sdram Cycle Time Tras/TrcSystem Bios Cacheable Video Bios CacheableCPU Latency Timer Delayed TransactionOn board Display Cache Setting CAS Latency Paging Mode ControlAGP Graphics Aperture Size Display Cache FrequencyRAS#Timing RAS-to-CAS OverrideRAS#Percharge Timing Integrated Peripherals On-Chip Primary PCI IDEOn-Chip Secondary PCI IDE IDE Primary/Secondary Master/Slave PIOIDE HDD Block Mode Power on FunctionUSB Controller USB Keyboard SupportKB Power on Password Hot Key Power OnUart Mode Select Onboard FDC ControllerParallel Port Mode ECP Mode Use DMAOnboard Serial Ports 1 Onboard Parallel PortWatch Dog Timer Power Management Setup Acpi FunctionPower Management Video Off MethodSuspend Mode HDD Power DownVideo Off In Suspend Suspend TypeResume By Alarm Power On By RingReload Global Timer Events PnP OS installed PnP/PCI ConfigurationsReset Configuration Data Resources Controlled By IRQ ResourcesDMA Resources PCI/VGA Palette SnoopShutdown Temperature PC Health StatusClock By Slight Adjust Frequency/Voltage ControlAuto Detect DIMM/PCI CLK Spread SpectrumLoad Fail-Safe Defaults Load Optimized Default Load Optimized DefaultSet Supervisor Password Enter PasswordSet User Password Save to Cmos and Exit Save to Cmos and ExitExit without Saving Drivers Installation Installing Drivers Installing Chipset Driver for Windows 95/98 Installing Ultra ATA Storage Driver for Windows 95/98 Installing Intel 82559 for Windows 95 or 98 Ver Installing VGA for Windows 95/98 Installing Audio for Windows 95/98 Installing Security Driver for Windows NT Please perform this procedure firstInstalling Ultra ATA Storage Driver for Windows NT Installing VGA for Windows NT Installing Audio for Windows NT Installing Intel 82559 for Windows NT ==Intel Pro Adapter will appear ==Click on OKInstalling VGA for Windows Installing Audio for Windows