AHA-1520B Installation Guide Installation AHA-1520B a Rev

Introduction Contents This installation guide provides the instructions needed to install and use your new SCSI host adapter. Once you have performed the simple installation steps listed on pages 2 through 5, your host adapter and Installation and Setup SCSI devices are ready for operation. Installation Steps ...... 2 - 5 We recommend that you keep this installation guide with your impor- tant computer documents. One of the benefits of SCSI is that you can connect as many as seven peripherals to your host adapter. If you are Helpful Hints not connecting the full complement of seven peripherals during your initial installation, when the time comes to add another peripheral, Using Your Host Adapter . 6 this installation guide will help with that installation. Setting Host Adapter Also, this installation guide includes information on the Adaptec Switches ...... 7 SCSISelect™ configuration utility. After installation, you can use this

AAA AAAA AAAA AAAA AAAA AAAA utility to reconfigure your host adapter without having to reopen the Connecting to the LED AAA AAAA AAAA AAAA AAAA AAAA computer or handle the card. Connector ...... 7

SCSISelect Utility Internal SCSI Connector Configuring the Host Switch Block Uses a 50-pin internal SCSI ribbon cable to connect internal SCSI devices. Controls host adapter BIOS Adapter ...... 8 LED Connector and I/O port addresses in Connects to the non-Plug and Play systems. Starting the SCSISelect computer's LED cable to display activity on Utility ...... 8 the SCSI bus.

1 2 3 4 3 2 1 SCSISelect Settings ...... 9

Pin 1 Need Assistance? Troubleshooting Checklist .11 AHA-1520B Installation Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 1 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95

Common Problems and AAA AAAA AAAA AAAA AAAA AA AAAA A

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Solutions ...... 11 AA A

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External SCSI Connector AA A

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Uses 50-pin high-density external AA A

Common Error Messages . .13 AA A Host Adapter BIOS PROM SCSI cables to connect external AA A

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Provides booting capabilities SCSI devices. AA A

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from a SCSI hard disk drive. Contacting NEC ...... 13 AA A

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Also stores the onboard AA A

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SCSISelect configuration utility. AA A

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AHA-1520B Host Adapter AA A

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AA A Step 3: Insert the host adapter in the slot; press Installation and Setup down firmly so that the bus contacts are securely seated in the slot. Secure the host adapter bracket with the screw you removed in Step 2. WARNING: Turn OFF power to the computer Expansion Slot and disconnect the power cord. Bracket Screw

Host Adapter Bracket Step 1: Remove the cover from the computer case. (If necessary, refer to the instructions in your computer documentation.)

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Bus Contacts

Back of Your Computer

16-bit ISA Expansion Slots (typically black)

Step 2: Locate an unused 16-bit ISA expansion slot (this slot is typically black); unscrew and remove the expansion slot bracket that covers the card-slot opening.

Expansion Slot Bracket Screw AHA-1520B Installation Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 2 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95 Expansion Slot Bracket AAA AAAA AAAA AAAA AAAA AA AAAA A

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(typically black) AA A

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AA A Step 4: Prepare each internal SCSI device for Step 6: Plug one end of the internal SCSI cable installation: (If you are installing External SCSI into the host adapter’s internal SCSI connector. devices only, skip to Step 10.) ■ Make sure the colored stripe on one side of the cable ■ Make sure all SCSI devices (internal and external) are is aligned with pin-1 of the host adapter’s connector. assigned a unique SCSI ID from 0 to 6. Refer to the Pin-1 of the connector is usually designated by a device’s documentation for instructions on setting small triangle (▲), or a “1” on the connector. The host the SCSI ID. adapter’s internal connector is also keyed to ensure the cable is not plugged-in backwards. If you plan to boot your computer from a SCSI hard disk drive, assign SCSI ID 0 to this drive. If you have a second hard disk drive, assign SCSI ID 1 to the drive. ■ In Step 7, you will attach one of your internal devices to the end of the cable. Right now, install (or enable) Colored terminators on that device. Also, remove (or disable) Stripe terminators on all devices that you plan to install in

the middle of the cable. AAA AAAA AAAA AAAA AAAA AAAA 50-pin SCSI AAA AAAA AAAA AAAA AAAA AAAA On most internal SCSI devices the termination setting Ribbon Cable is controlled by setting a jumper or a switch, or by physically removing or installing a resistor module(s). Refer to the device’s documentation to determine how to enable or disable termination on your particu- Pin 1 lar device. Internal SCSI Connector

Step 7: Plug the other end of the cable into the last internal device (this device must be terminated, see Step 4). Pin 1

Termination Enabled

Termination Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 3 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95

Disabled ColoredAAA StripeAAAA AAAA AAAA AAAA AA AAAA A

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Step 5: Install and mount each internal SCSI device AA A

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(Refer to your computer and device documentation Device AA A

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for instructions.) AA A

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AA A Step 8: Plug the remaining connectors on the cable ■ In Steps 11 and 12, you will be attaching one of your into any remaining internal devices (these devices external devices to the end of the daisy-chain. Right must not be terminated, see Step 4). now, install (or enable) terminators on that device. Also, remove (or disable) terminators on all devices Pin 1 that you plan to attach in the middle. On most external SCSI devices, termination is controlled by installing or removing a terminating plug (see Step 11). Refer to the device’s documentation to determine how to enable or disable termination on Colored Stripe your particular device.

To Host 2nd Internal SCSI Adapter Device To 1st Internal SCSI Device Termination

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Enabled AAA AAAA AAAA AAAA AAAA AAAA Step 9: Connect an available DC power cable Termination (from your computer’s power supply) to the power Disabled Termination input connector on the SCSI device. Disabled Power Input Connector on the Back of the Drive Step 11: Plug one end of the external SCSI cable into the host adapter’s external SCSI connector and plug the other end of the cable into either one of the SCSI connectors on the external SCSI device. (If you are installing only one external device, attach a terminating plug to the device.)

DC Power Cable (from the Power Supply)

Step 10: Prepare each external SCSI device for Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 4 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95

AAA AAAA AAAA AAAA AAAA AA AAAA A installation: (If you are not installing external SCSI AAA AAAA AAAA AAAA AAAA AA AAAA A

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AA A ■ AA A Make sure all SCSI devices (external and internal) are AA A

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assigned a unique SCSI ID from 0 to 6. Refer to the AA A

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device’s documentation for instructions on setting AA A

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the SCSI ID. AA A

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If you plan to boot your computer from a SCSI hard AA A

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disk drive, assign SCSI ID 0 to this drive. If you have a AA A

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second hard disk drive, assign SCSI ID 1 to the drive. AA A

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Terminating Plug AA A

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AA A ® Step 12: Connect other external SCSI devices by ■ Windows 95: Windows 95 has embedded driver daisy-chaining each device to the previous device support for your host adapter. When you start until all external SCSI devices have been connected. Windows 95, the host adapter is detected and the (The device at the end of the chain must have a appropriate driver is automatically installed. To take terminating plug installed.) advantage of various productivity tools and accesso- ries, you should also install Adaptec EZ-SCSI software. See the EZ-SCSI software documentation for installation instructions. ■ NetWare, OS/2, Windows NT™, and UNIX: The most current versions of these operating systems have embedded driver support for your host adapter as part of their installation software. For instructions on installing embedded driver support, see the operating system documentation.

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AAA AAAA AAAA AAAA AAAA AAAA Congratulations! Installation of your host 3

adapter is complete. For useful information on 2

4 using your host adapter, refer to Helpful Hints on page 6. For instructions on using the SCSISelect configuration utility, refer to SCSISelect Utility on Terminating Plug page 8. If you need further help, refer to Need Assis- tance? on page 11. Step 13: Reinstall your computer cover and connect all power cables; turn ON your computer:

Step 14: Install the appropriate host adapter software driver for your operating system: ■ DOS and Windows® 3.x: Because drivers for DOS and Windows 3.x are not embedded in the operating system, you must load them yourself. If your host ® Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 5 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95 adapter came bundled with Adaptec EZ-SCSI soft- AAA AAAA AAAA AAAA AAAA AA AAAA A

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ware, see the EZ-SCSI software documentation for AA A

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installation instructions. If you wish to purchase AA A

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EZ-SCSI, you can call Adaptec to order directly. AA A

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If you purchased your host adapter as part of a bun- AA A

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dle created by a third party, you can use the drivers AA A

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they provide. Please refer to the documentation pro- AA A

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vided by the third party or contact them directly for AA A

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AA A Hard Disk Drives Helpful Hints ■ Every hard disk must be physically low-level formatted, partitioned, and logically formatted before it can Using Your Host Adapter be used to store data. SCSI hard disks are physically formatted at the factory and do not need to be physi- ■ You may need to install the manufacturer’s propri- cally formatted again. etary device drivers if you use SCSI devices other than If you connected a new hard disk drive to your host hard disk drives and CD-ROM drives. (See your adapter, you must partition and logically format the device’s documentation.) drive. For DOS and Windows (3.x and 95) use the ■ For all SCSI devices connected to the host adapter, DOS Fdisk and Format commands (see your com- make sure to use high-quality SCSI cables to ensure puter and DOS documentation). For other operating reliable data transfer. systems, see your operating system documentation. ■ When one or more Fast SCSI devices are connected to ■ If you are booting from a SCSI hard disk drive, make the host adapter, the combined length of all cables sure the Hard Disk (or Drives) setting in your (internal and external) must not exceed 3 meters computer’s CMOS setup program is set to NoneAAA orAAAA AAAA AAAA AAAA AAAA (9.8 feet) to ensure reliable operation. If no Fast SCSI No Drives Installed, as is required for SCSI hardAAA diskAAAA AAAA AAAA AAAA AAAA devices are connected, the combined length of all drives. (See your computer documentation.) cables must not exceed 6 meters (19.7 feet). See your ■ If both SCSI and non-SCSI (e.g., IDE) disk drives are device’s documentation to determine if it is a Fast installed, then the non-SCSI disk drive is always the SCSI device. boot device. ■ Your host adapter can support the SCSI Configured AutoMatically (SCAM) protocol, which assigns SCSI Multiple Host Adapters IDs dynamically and resolves SCSI ID conflicts auto- ■ Multiple SCSI host adapters can be installed in your matically at bootup. To enable or disable SCAM sup- computer; you are limited only by the available sys- port, see Advanced Host Adapter Settings on page 10. If tem resources (e.g., I/O port and BIOS addresses). your system includes SCSI disk drives or other devices that support SCAM, when SCAM is enabled ■ Each host adapter you install forms a separate SCSI you do not need to manually assign SCSI IDs to these bus with a different set of SCSI devices. SCSI IDs can devices. Most SCSI devices currently in use, however, be reused as long as the ID is assigned to a device on do not support SCAM and must have their SCSI IDs a different host adapter (e.g., each host adapter can set manually. have a device with SCSI ID 0). AHA-1520B Installation Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 6 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95

■ If you have two or more SCSI host adapters, enableAAA AAAA AAAA AAAA AAAA AA AAAA A AAA AAAA AAAA AAAA AAAA AA AAAA A

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the BIOS only on the boot host adapter; disable the AA A

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BIOS on the remaining host adapters. AA A

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AA A Setting Host Adapter Switches If you wish to disable BIOS functionality and still have access to SCSISelect, do not disable the BIOS The switch block on your host adapter, is factory set to PROM with the switches. Instead, change the Host work in a Plug and Play system. Since resources in a Adapter BIOS setting in SCSISelect to Disabled. Plug and Play system are assigned automatically, you ■ Host Adapter I/O Port Address—If your system is should not have to change these settings. Plug and Play, the I/O port address is set automati- If your system is not Plug and Play, you may have to cally. If your system is not Plug and Play, you should change the I/O port address and BIOS address settings. choose an I/O address range that does not conflict The table below lists all possible settings on the switch with the I/O address range of another device installed

block. in your system. 1 2 3 4 3 2 1 Connecting to the LED Connector OPEN (Optional) Most computers have an LED disk activity light on the front panel. If you disconnect the cable from

the LED connector on the motherboard and connectAAA itAAAA to AAAA AAAA AAAA AAAA the LED connector on the host adapter, the LED onAAA theAAAA AAAA AAAA AAAA AAAA Host Adapter BIOS Address sw1 sw2 sw3 front panel of the computer will light whenever there is DC000-DFFFF Off Off Off activity on the SCSI bus. D8000-DBFFF On Off Off D4000-D7FFF Off On Off D0000-D3FFF On On Off Note: If you are using non-SCSI disk drives (e.g., CC000-CFFFF Off Off On IDE), you may not want to connect your com- C8000-CBFFF On Off On puter’s LED to the host adapter, since the LED Inactive1 Off On On will no longer indicate non-SCSI disk activity. BIOS PROM Disabled2 On On On Host Adapter I/O Port Address sw4 340-35F Off

140-15F On LED Cable (Open = Off) from Motherboard 1 Do not use this setting in Legacy/Non-Plug and Play systems. 2 If you disable the BIOS PROM, you must run SCSISelect to synchronize the host adapter’s resource table with your new selection. Synchroniza-

tion is automatically performed just by entering SCSISelect. Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 7 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95

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AAA AAAA AAAA AAAA AAAA AA AAAA A ■ Host Adapter BIOS Address—If your system is Plug LED AA A AA A

Cable AA A and Play, the BIOS address is set automatically. If AA A

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your system is not Plug and Play, you should choose 1 AA A Pin 1 AA A

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a BIOS address range that does not conflict with the AA A

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LED Connector AA A BIOS address range of another device installed in AA A on Host Adapter AA A

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your system. AA A

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In order to boot from a SCSI disk drive connected to AA A

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the host adapter, a BIOS address must be selected. If AA A

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you set the BIOS address to BIOS PROM Disabled (set AA A

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tionality (including access to the SCSISelect utility at AA A

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system bootup) and you cannot boot from a SCSI disk AA A

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drive. AA A

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AA A SCSISelect Utility Starting the SCSISelect Utility If the BIOS PROM is enabled, you can start the SCSISelect utility by pressing Ctrl-A when the following prompt Configuring the Host Adapter appears briefly at boot time: The SCSISelect configuration utility allows you to change Press for SCSISelect (TM) Utility! host adapter and SCSI settings without having to open The first menu that appears displays the options the computer or handle the adapter. SCSISelect also con- Configure/View Host Adapter Settings and SCSI Disk tains utilities that allow you to low-level format or verify Utilities. the disk media of your SCSI hard disk drives. Adaptec AHA-1520B/1522B SCSISelect(TM) Utility v1.11 The SCSISelect settings are listed in the table below. If you want to view and/or change the current settings, or AHA-1520B/1522B at Port 0340h if you would like to format or verify a disk, see Starting Would you like to configure the host adapter or run the SCSI disk utilities? Select the option and press . the SCSISelect Utility on this page. Detailed descriptions Press to switch between color and monochrome modes. of each setting begin on page 9. Options

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Basic Host Adapter Settings Configure/View Host Adapter Settings AAA AAAA AAAA AAAA AAAA AAAA SCSI Disk Utilities Host Adapter Interrupt (IRQ) Channel Host Adapter SCSI ID SCSI Parity Checking Host Adapter SCSI Termination Arrow keys to move cursor, to select option, to exit (*=default) SCSI Device Settings Initiate Sync Negotiation Maximum Sync Transfer Rate Note: SCSISelect is also provided on a bootable Enable Disconnection diskette. If your system does not allow you to Send Start Unit SCSI Command1 Select Ctrl-A Advanced Host Adapter Settings access SCSI by pressing at boot ISA Plug and Play Support time, you can run SCSISelect from this diskette. Plug and Play SCAM Support To run, simply insert the diskette in a bootable Host Adapter BIOS floppy drive and boot your system. Save this Support Removable Disks Under BIOS as Fixed Disks1 diskette. You may need it later if you ever lose Extended BIOS Translation for DOS Drives > 1 GByte1 access to the BIOS PROM. 1 Settings take effect only if Host Adapter BIOS is enabled.

Using SCSISelect Menus Guide Installation AHA-1520B A Rev. 511162-00, Number: Part 495339-00 Number: Spec Print 8 of 16 Page 5/30/96 Date: Current pm 3:43 1996 30, May Modified: Last Location:File n:\mario\1520b_ig.nec\1520b_ig.frm ECN Date: 6/11/95

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SCSISelect uses menus to list options you can select. To AA A