SBC comm SBC-770 manual Base Memory

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Halt On

During the power-on-self-test (POST), the computer stops if the BIOS detects a hardware error. You can tell the BIOS to ignore certain errors during POST and continue the boot-up process. These are the selections:

No errors: POST does not stop for any errors.

All errorsIf: the BIOS detects any non-fatal error, POST stops and prompts you to take corrective action.

All, But Keyboard: POST does not stop for a keyboard error, but stops for all other errors.All, But DiskettePOST does not stop for diskette drive errors, but stops for all other errors.

All, But Disk/Key: POST does not stop for a keyboard or disk error, but stops for all other errors.

Memory

You cannot change any values in the Memory fields; they are only for your information. The fields show the total installed random access memory (RAM) and amounts allocated to base memory, extended memory, and other (high) memory. RAM is counted in kilobytes (KB: approximately one thousand bytes) and megabytes (MB: approximately one million bytes).

RAM is the computer's working memory, where the computer stores programs and data currently being used, so they are accessible to the CPU. Modern personal computers may contain up to 64 MB, 128 MB, or more.

Base Memory

Typically 640 KB. Also called conventional memory. The DOS operating system and conventional applications use this area.

54 SBC-770 User Manual

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Contents SBC-770 Page Acknowledgements Copyright NoticeTechnical Support Aaeon Customer ServicesMessage to the Customer Product Warranty Packing list Dear Customer Contents Award Bios Setup Ethernet Software configuration Page General Information Highly integrated SBC IntroductionFeatures Standard SBC functions SpecificationsFlat Panel/CRT Interface Mechanical and environmental Board layout Board dimensions Installation Label Function Jumpers and connectorsCN1 Locating jumpers Locating connectors Setting jumpers CPU installing and upgrading Mounting the CPU and cooling Modules Step Memory Installation Procedures Installing Dram DIMMsSystem Memory Supplementary information about DimmCache memory LCD driving voltage select J4 Clear Cmos J2CPU frequency ratio select J6 System temperature thermal sensor J5Pentium II CPU jumper setting examples 450/100MHz 500/100MHz 550/100MHz LCD clock signal select J7 DOC address select J8 COM2 RS-232/422/485 select J10, J9 CPU fan power connector CN5 Power connectors PWR1, CN5Power connector PWR1 Hard drive LED CN2 Power LED and Keylock CN1External speaker CN3 Reset switch CN4Connecting the hard drive IDE hard drive connector CN7, CN8IDE hard drive connectors CN7, CN8 IrDA connector CN9 Parallel port IRQ Parallel port connector CN10Parallel port connector table CN10 Connecting the floppy drive Floppy drive connector CN12Floppy drive connector CN12 USB connector CN14 VGA display connector CN15 Display connectors CN15, CN6LCD display connector CN6 COM2 RS-232/422/485 serial ports CN11 100Base-Tx Ethernet connector CN17Serial ports CN16, CN11 Keyboard and PS/2 mouse connector CN18, CN13 DiskOnChip socket U34 DiskOnChip DOC 2000 Installation Award Bios Setup To Enter Setup Before Boot Press DEL KEY Starting setupThese keys helps you navigate in Setup Setup keysGetting help Case of ProblemsBios Main setup MenuPage Standard Cmos setup Hard Disks Award Bios Setup Drive a Drive B Pannel Base Memory Extended Memory Bios features setup Virus Warning Boot Sequence PS/2 Mouse Function Control Chipset features setup Sdram RAS-to-CAS Delay Sdram Precharge Control Memory Hole at 15M-16M Power management setup Power Management Determines the manner in which the monitor is blanked Standby Mode Reload Global Timer Events PNP/PCI configuration setup PNP OS Installed DMA n Assigned to Load Bios defaults/Load setup defaults Integrated peripherals setup Select Enabled only if your hard drives support block mode Select a DMA channel for the port Supervisor/User password setting Enter Password IDE HDD auto detection Save & exit setup Page Flat Panel/CRT Controller Display Drivers and Utilities Software drivers Hardware configurationBefore you begin Necessary prerequisitesWindows Driver installationDriver Installation Page Driver Installation Page Driver Installation Page Driver Installation Windows NT Windows NT Page Ethernet Software Configuration Ethernet software configuration Programming the Watchdog Timer Outportb0x443, 30 // set watchdog to 30 seconds How to program the Watchdog TimerDemo program