Adaptec SBC-596, SBC-599 manual Scsi Terminators

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The AIC-7880 supports the SCSI Configured AutoMatically (SCAM) protocol, which assigns SCSI IDs dynamically and resolves SCSI ID conflicts automatically at bootup. If your system includes SCSI disk drives or other devices that support SCAM, you do not need to manually assign SCSI IDs to these devices.

Most SCSI devices currently in use, however, do not support SCAM. The SCSI IDs on these devices must be set manually. To change the SCSI IDs on these devices, refer to the device’s documentation.

If you install more than one SCSI host adapter in the computer, each adapter forms a separate SCSI bus. SCSI IDs can be reused as long as the ID is assigned to a device on a separate SCSI bus (e.g., each SCSI bus can have a device with SCSI ID 0).

SCSI Terminators

To ensure reliable communication, the SCSI bus must be properly terminated. Termination is controlled by a set of electrical resistors, called terminators. Terminators must be placed (or enabled) at the two extreme ends of the SCSI bus. All devices that lie between the ends must have their terminators removed (or disabled).

Termination on the Ultra Wide SCSI itself is controlled by software commands via the SCSISelect utility. The default setting is set to Automatic. When set to Automatic, if the AIC-7880 detacts that SCSI cables are connected to any of its two SCSI connectors, it automatically sets the termination setting for the low and high bytes of the 16-bit Wide SCSI bus. The low byte controls 8-bit SCSI; the low and high bytes together control 16-bit Wide SCSI.

Chapter 6 SCSI Setup and Configurations 65

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Contents SBC-596/599 Acknowledgements Copyright NoticePage SBC-596/599 series comparison table Packing list Contents Chapter Software Configuration Chapter Award Bios Setup Scsi Setup and Configuration Appendix a Programming the Watchdog Timer General Information Introduction FeaturesStandard PC system SpecificationsMechanical and environmental Board layout and dimensions Page Installation Guide Jumpers Connectors Locating jumpers Locating connectors Open Closed Setting jumpersInstall a CPU in the ZIF socket CPU installation and upgradingVoltage Select J1, J2, J3, and J4 Frequency Ratio J5 Clock Setting J8 Mtxc CLK Setting/P55C Enabled J7Battery Select and Clear Cmos J9 Scsi Select J10 SBC-599 onlyISA Timing J11 SBC-599 only LCD/EL Select J13 Dual Power Select J15Installing SIMMs Installing Dram SIMMsSpeaker connector CN1 Front panel connectors CN1,CN2,CN3,CN4Connecting the hard drive Fan power supply connector CN5Scsi connectors CN6, CN7 SBC-599 only IDE hard drive connector CN8, CN9Floppy connector CN10 Connecting the floppy drive VGA interface connections SBC-599 only CRT connector CN16Flat panel connector CN11 LCD power select J12Keyboard connectors CN12, CN19 COM-port connectors CN13, CN17 Printer port connector CN14IR connector CN15 Ethernet connector UTP1, SBC-599 only USB connectors CN18, CN20Watchdog select J14 Watchdog timer configurationonSoftware Configuration Utility with IDE Bus Master Driver Utility with VGA Bios SBC-599 onlySystem Bios which supports CRT only VGA display software configuration SBC-599 only Pin Pin name Connections for four standard LCDs SBC-599 onlyPin Pin name Connections to Planar EL 640 x 480 AD4 ELConnections to Toshiba LTM10C042 640 x 480 TFT Color LCD Connections to Sharp LM64C142 640 x 480 Dstn Color LCD Ethernet software configuration SBC-599 only Page Award Bios Setup System test and initialization System configuration verificationLoad Defaults Entering setupStandard Cmos Setup Bios Features Setup Chipset Features Setup Power Management Setup PnP/PCI Configuration Integrated Peripherals Load Bios defaults User Password Exit without saving Save & exit setupPCI Svga Setup SBC-599 only Before you begin Simultaneous display mode InstallationDriver installation Sleep modeWindows setup Changing Color Schemes Windows 95 Drivers Setup Proce- dure Step Windows NT Drivers Setup ProcedureOS/2 Drivers Setup Procedure Installing from DiskettePreliminary Steps Page Selecting Monitor Type Selecting Screen Resolution/Refresh RateInstallation Notes Scsi Setup and Configurations SBC-599 only Installation and Setup Scsi Configuration GuidelinesScsi ID Numbers Scsi Terminators Termination Termination Connecting Internal Scsi Devices Installing Scsi DevicesConfiguring the Scsi Adapter Page Basic Host Adaptec Settings Default Basic Host Adapter SettingsScsi Device Settings Boot Device SettingsSome older SCSI-1 devices do not support Sync Page Host adapter Bios is enabled Advanced Host Adapter SettingsPage Using SCSISelect Menus Using the Scsi Disk Utilities Installing Device Drivers Windows 95 or Windows NT Quick Start InstructionsWindows 95 / Windows NT Troubleshoot- ing Troubleshooting Tips Scsi Device TroubleshootingPage My CD-ROM drive doesn’ t work properly under Windows Page Information for DOS/Windows 3.1x Users DOS and Windows 3.1x Device DriversDOS and Windows 3.1x Aspi Managers DOS Formatting Utilities Formatter and Partitioner afdisk Page Scsi Setup and Configurations Page Programming the Watchdog Timer REM Watchdog timer example program Pin Assignments Speaker connector CN1 HDD LED connector CN2Reset connector CN3 Fan power connector CN5 Power LED/keyboard lock connector CN4Pin Function Wide Scsi connector CN6Pin Function Scsi connector CN7 Pin Signal IDE hard drive connectors CN8, CN9Pin Signal Pin Floppy connector CN10Enavee GND External keyboard connector CN12 COM port connectors CN13 COM2, CN17 COM1 Printer port connector CN14 IR connector CN15 Keyboard and PS/2 mouse connector CN19 USB connectors CN18, CN20Ethernet 10BASE-T connector UPT1 108 IRQ Default Settings IRQ Default Settings