Adaptec AHA-2840A, AHA-2842A Installation Guide

Download

AAAA

Installation Guide

AHA-2840A/2842A

High Performance Bus Master

VL-to-Fast SCSI Host Adapter with SCSISelect

AHA-2840A/2842A Installation Guide

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B

Part Number: 510590-00, Rev B

Part Number: 510590-00, Rev B Print Spec Number: 492663-00

Print Spec Number: 492663-00

Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

Current Date: 5/9/96 ECN Date: 6/3/96

™

AAAA

Getting Started

This guide tells you how to install and configure the AHA

™

-2840A/2842A SCSI host adapters. With the exception of the AHA-2842A floppy drive controller, the installatio n pro ced ure is the same for both host adapter models . (See Controlling Floppy Drives on page 3.)

Here is an overview of host adapter installati on:

1 Insert the host adapter in a VL-Bus

™

slot in your

computer.

2 Connect SCSI cables and SCSI peripherals. 3 Terminate the SCSI bus. 4 Adjust host adapter configuration, if necessary,

by setting switches and running the SCS ISele ct utility.

™

5 Load software, if necessar y.

The following sectio ns explain each inst all ation step.

Board Layout

This figure identifies the major AHA-2840A/2842A components. The following table describes each component.

J1 S1 J2 U1 J3

U6J5

U9U8

Location Description Location Description

J1 External LED Connector S1 Switch Block J2 Floppy Drive Connector* U1 Floppy Drive Controller* J3 Internal SCSI Connector U6 VL-Bus to Adapter Interface J4 External SCSI Connector U8 Host Adapter BIOS ROM J5 Write-back Enable Jumper U9 AIC-7770 Bus Master Chip

*AHA-2842A only

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

Default Settings

AHA-2840A/2842A host adapters operate correctly with their factory default setti ngs in the majority of PC systems featuring VL-Bus slots. The default set tings ar e:

Parameter Default Setting

Interrupt Level IRQ 11 Data FIFO Threshold 100% Port Address 1C00h Host Adapter BIOS Enabled at address D8000h Host Adapter SCSI ID 7 SCSI Bus Parity Enabled SCSI Bus Reset at Host Adapter Initialization Enabled SCSI Bus T erm inat ion En abled Floppy Drive Controller Enabled (AHA-2842A only) Greater than 1 GByte Support Disabled BIOS Support for More than 2 Drives Disabled

Removable Drive Support

Support removable drive as boot device only

See Section , Configuring the Host Adapter to learn how to change these settings .

Installing the Host Adapter

Inserting the Board

WARNING: Turn OFF and disconnect the

power to your computer and attached devices before you remove the chassis cover. See your computer’s documentatio n for instruct ion s on how to do this .

1 Remove the chassis cover to expose the expansion

slots and external access covers .

2 Locate an unused VESA

expansion slot, as shown in the diagram below.

VL-Bus Slots

local bus (VL-Bus)

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

3 Remove the correspondin g expansion board

access cover on the comput er ch ass is.

4 Align the bus connector on the bottom of the host

adapter with the VL-Bus slot and carefully press it down into the slot. Secure the host adapter bracket to the computer chass is with the screw from the removed expansion slot cover.

Note: Do not replace the chassis cover or

reconnect the power yet !

Setting Switches

If you need to change switch block setti ngs , do it now before you replace the chassis cover and run SCSISelect. (See Section , Switch Block Settings.) In most cases, you will never have to change the default switch settings . The follow ing are some situatio ns in which you should change the settings:

Controlling Fl oppy Drives

If your floppy drives are connected to another floppy controller (e.g., the one on the motherboard), set sw5 to On to disable the AHA-2842A floppy controller.

If you want to use the floppy controller on the AHA-2842A you must disable other floppy control lers in the computer; refer to the documentation for your computer or floppy controller.

Using Multiple Host Adapters

The AHA-2840A/2842A port address must be different from the port addresses of other expans io n boards and host adapters. If another board is using the default AHA-2840A/2842A port address of 1C00h, change sw1-sw4 to a different port address (see Section , Switch Block Settings).

Each installed host adapter must also have a different BIOS addr ess , which is set by sw6 and sw 7. Or, you can disable the AHA-2840A/2842A BIOS by setting sw8 to On. (See the next section.)

Disabling the BIOS

CD-ROM drives , tape driv es , and other no ndi sk devices do not use the host adapter BIOS. Therefore,

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

if no SCSI hard disk drives are connected to the host adapter, you can reduce bootup time if you disable the host adapter BIOS.

Matching I/O Address and Slot Number

In EISA/VL-Bus systems, we recomm end that the host adapter I/O address match the num ber of the VL-Bus slot in which the host adapter is installed. (See your PC document ati on to determ ine the slot numbers.) If the host adapter is installed in slot #1 leave the I/O address at the default (1C00h); if it is in slot #2, change the I/O address to 2C00h; if it is in slot #3, change the address to 3C00h, etc.

Jumper Block

Leave the jumper on jumper block J5 installed unless you are experiencing problems with write-back signals. (See Section 8, Troubleshooting Checkl ist.)

Connecting Peripherals

Setting SCSI IDs

You must assign a different SCSI ID to each device on the AHA-2840A/2842A SCSI bus. See your SCSI peripheral document atio n for direct io ns on how to determine the ID and change it.

■ The default SCSI ID for AHA-2840A/2842A host

adapters is SCSI ID 7. You can change the ID with the SCSISelect utility, if necessary. (See Section , Configuring the Host Adapter.)

■ We reco m men d that you ass ign SCSI IDs 0 and 1

to the first two SCSI hard disk drives in your PC.

Connecting Cables

SCSI devices are cabled together in a single, connected series called the SCSI bus. The SCSI bus cables must run sequentially from one device to the next, with no bran ches .

The host adapter is at the end of the SCSI bus if either the internal or external SCSI connect or is unused. The host adapter is in the middle of the bus if internal and external SCSI devices are installed .

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

Caution: AHA-2840A/2842A host adapters

support only single-ended SCSI devices . Differential SCS I devices may be damaged if

connected to the host adapter . The peripheral documentation will tell you whether the device is single-ended or differential.

1 Lay out the cables and find the pin-1 element of

each cable and peripheral connector. On internal cables, pin 1 is usually marked with a

contrasting color on one edge of the ribbon cable, and a small triangle marks pin 1 on the SCSI connector. External cable connectors can only be plugged-in one way, so pin-1 orientatio n is automatic.

2 Attach the SCSI cable(s) to the host adapter and

the peripheral(s), using the internal and/o r external connector(s).

3 Be sure to maintain correct pin-1 orientation

throughout the bus. The AHA-2840A/2842A uses a 50-pin high-density external connector, and a 50-pin flat ribbon-type internal connector.

4 If you are installing an AHA-2842A and you are

using the onboard floppy cont roller, co n n ect the 34-pin ribbon cable to the onboard floppy connector. Be sure to maintain pin-1 orientation, as described earlier.

Terminating the SCSI Bus Cable

The last ph ysical SCSI device on either end of the SCSI bus must have a set of resistors called termina- tors. Terminators must be removed from, or disabled on, all other devices on the SCSI bus.

The AHA-2840A/2842A and m ost SCSI peripherals have built-in terminators that can be enabled or disabled. Terminate only the devic es at e ach end of th e SCSI bus.

Termi nati ng the Host Adapter

Termination is enabled by default on AHA-2840A/ 2842A host adapters. You must disable host adapter

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

terminatio n if you attac h SCSI devic es to both the internal and external SCSI c onnect o rs, sin ce the ho st adapter is then in the middle of the SCSI bus.

The table below lists the three possible SCSI device/ host adapter configurations.

Devices Connected to Host Adapter Host Adapter Termination

Internal devices only (host adapter at end of bus)

External devices only (host adapter at end of bus)

Internal and external devices (host adapter in the middle)

Enabled

Disabled

Host adapter termination for the AHA-2840A/ 2842A is controlled by the SCSISelect progr am , not by switches. If you need to disable host adapter termination, first complete the physical installation, then run SCSISelect and follow the directions in Section , Configur ing t he Host Adap ter.

Termi nati ng Other SCSI Peripher als 1

Check the manufacturer's documentation to determine how to enable or disable SCSI bus termination on your SCSI peripheral devic e(s).

2 Install/enable term inat ors on SCSI dev ices at the

ends of the SCSI bus (cable).

3 Remove/disable terminators on all other devices

on the SCSI bus.

4 Be sure the SCSI cables are connect ed sec urely.

They may have been loosened if you changed jumpers or switch settings on the peripherals.

Reassembling and Starting the System

1 Replace the computer chassis cover, following the

instruct ion s in your co mput er’s documentation.

2 Be sure all power switches are OFF, then reconnect

power cables to your computer.

3 Turn ON the power for the computer and the

peripheral(s).

At bootup the host adapter BIOS sign -on message appears on t he screen (unless the BIOS is disabled). The message includes a list of installed SCSI devic es and a BIOS status message.

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

In most cases your computer, host adapter, and SCSI peripherals are now ready to use.

Configuring the Host Adapter

Your host adapter includes the built-in, menu-driven SCSISelect configuration utility. SCSISelect lets you change host adapter settings such as interrupt channel and host adapter termination without opening your computer or setting switches. SCSISelect also includes a low-level formatting uti lity .

Running SCSISelect

There are two ways to invoke SCSISelect:

■ Press Ctrl-A when prompt ed at boot time.

■ At the DOS prompt type debug and press Enter.

Debug

Then at the

xxxx

where

xxxx

= first 4 digits of host adapter BIO S

address in hex. (D8000h is the default address.)

Use the arrow (↑↓) and Enter keys to make selections in SCSISelect. Press Esc at any time to retur n to the previous menu. You can press F6 to restore the original default settings. To abandon changes you made in the Configure/View Hos t Adapter Sett ings menu, press Esc an d selec t No when asked if you want to save the changes.

prompt (a hyphen), type

Main Menu Options

Configure/View Host Adapter Settings

The Configuration screen displays the basic software configurable options: IRQ, Host Adapter SCSI ID, Parity Checking, and Host Adapter Termination. Highlight an option and press Enter to see a list of possible values. Some options include information to help you determine which value to select.

If you select SCSI Device Configuration you can view another menu and change these opt ions for each device on the SCSI bus: Initiate Synchr on ou s Negotiation, Maximum Synchronous Transfer Rate, Enable Disconnect, Send Start Unit Comman d, and Include in BIOS Scan.

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

If you select Advanced Configuration Options you can view a menu of these advanced options: Data FIFO Threshold, Host Adapter BIOS Enable or Dis able, Support Removable Disks under the BIO S as Fixed Disks, Exten ded BIO S Trans lat ion , SCSI Bus Reset at Host Adapter Initialization, and BIOS Support for More than 2 Drives.

SCSI Disk Utilities

When you select SCSI Disk Utilities from the Main Menu, the SCSI devices installed at SCSI IDs 0 through 7 are displayed (including nondisk devices). When you select one of the installed devices , the Utilities menu appears.

Format Dis k

accesses the Adaptec SCSI low-level

format utility. Most SCSI devic es are preform att ed and do not need to be formatted again.

Verify Disk Media scans the select ed devi ce's med ia for defects. If bad blocks are encountered, a prompt will ask if you want the blocks reas sign ed; if you select Yes, those blocks will no longer be used.

View Configuration Tips

This option gives you access to useful informat ion about host adapter termination, DOS memory configuration, and other topic s.

I/O Operating Environment Software

DOS/Windows

Under MS®-DOS 5.0 or higher, you can connect up to seven SCSI hard disk driv es to the AH A-2840A/ 2842A without additional software. (To do this you must enable BIOS Suppo rt fo r More than Two Drives, which is disabled by default.) Older versions of DOS support up to two hard disk drives .

You can make the host adapter treat removable media drives as hard disk dr ives . To do this, run SCSISelect, ch oo se Advanced Configuration Options, and set the Support Removable Disks Under BIOS as Fixed Dis ks o ptio n to All Disks. If you use this setting, you may not remove the media while your comput er sy stem po wer is on.

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

You need additional software, such as Adaptec’s EZ-SCSI, if you want to

■ Remov e and insert magnet o-opt ical and other

removable media while your computer is running

■ Support more than tw o hard disk driv es under

versions of DOS prior to MS-DOS 5.0

■ Use devic es other than hard disk drives , suc h as

SCSI tape drives, CD-ROM drives, scanners, etc.

Other Operating Environments

The AHA-2840A/2842A host adapters support DOS,



Novell UNIX Contact Adaptec or your operatin g system vend or for informatio n on the cur ren t schedule for I/ O operating env ironment software suppo rt.

If you have a problem during installatio n, check the following items first:

■ Are all SCSI peripheral devices powered?

■ Are all SCSI bus cables and power cables properly

■ Do the host adapter and all devices on the SCSI

■ Are all devices on the SCSI bus terminated prop-

■ If your system has multiple host adapters, did you

■ If your system has no write-back feature and the

■ If your system h as write-back, and the system

NetWare, OS/2, Windows NT, SCO



and Novell UnixWare operating sys tems .

T roubleshooting Checklist

connected?

bus have unique SCSI IDs?

erly? (See Section , Connecti ng Peripherals.)

assign each host adapter a unique BIOS address or disable the BIOS on all but one host adapter?

host adapter do es not respond , did yo u try removing the jumper on jumper block J5?

behaves er ratica l ly o r doe s n ot work, did you ma ke sure the jumper on jumper block J5 is installed?

Computer Will Not Boot from a SCSI Disk Drive

If both SCSI and non-SCSI disk drives are installed, then the non-SC SI disk dr ive is always th e boot

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

device. If the system has only SCSI disk drives, check the follow in g:

1 Make sure your computer's CMOS Setup is set to

No Drives Installed, as required for SCSI host adapters.

2 Make sure the boot hard disk SCSI ID is 0. T he

SCSI ID is normally set with jumpers or switches on the drive.

3 If this does not solve the problem, back up all data

on the SCSI hard disk and perform a low-level format with the SCSISelect Format Disk

option. See the MS-DOS docum entation for inst ruct io ns on partitioning th e disk after for m att ing.

Conflicts With Other Option Cards or Devices

Your host adapt er and other devices may no t share system resources such as IRQ channels, port addresses, and BIOS addresses. If you experience conflicts, change IRQ channels with the SCSISelect utility or set the host adapter switches to a different port address and/or BIOS address.

Switch Block Settings

The AHA-2840A/2842A switch block is located in the upper left-hand corner of the board. This table shows all the possible settin gs of the eight switches . Default settings are marked w ith an aster isk (*).

sw1 sw2 sw3 sw4 I/O Address sw5 Floppy Controller

Off Off Off Off 1C00h* Off Enabled* On Off Off Off 2C00h On Disabled Off On Off Off 3C00h sw6 sw7 BIOS Address On On Off Off 4C00h Off Off D8000h* Off Off On Off 5C00h On Off C8000h On Off On Off 6C00h Off On D0000h Off On On Off 7C00h On On E0000h On On On Off 8C00h sw8 Host Adapt er BIO S Off Off Off On 9C00h Off Enabled* On Off Off On AC00h On Disabled Off On Off On BC00h On On Off On CC00h Off Off On On DC00h

Off = Open

On Off On On EC00h Off On On On FC00h On On On On Reserved

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

Adaptec Technical Support and Services

If you have questions about installing or using your Adaptec product, check this installation guide first—you will find answers to most of your questions here. If you need further assistance, please contact us. We offer the following support and information services:

Electronic Support

Technical information, including product literature, answers to commonly asked questions, information on software upgrades and other topics is available electronically through the following:

■ Adaptec World Wide Web (WWW) site at http://

www.a daptec.com

■ File Transfer Protocol (FTP) server at ftp.adaptec.com.

■ CompuServe Adaptec Forum at GO ADAPTEC.

■ Adaptec USA Bulletin B oard Service (BBS) at 408-945-7727;

supports up to 28,800 bps (bits per second), 8 data bits, 1 stop bit, no parity. No product literature is available on the Adaptec BBS.

■ Interactive Fax System at 408-957-7150; available 23 hours a

day, 7 days a week. The fax system is out of service 1 hour each day.

Technical and Product Support

■ For technical support and information about many of

Adaptec’s electronic support services, call 800-959-SCSI (7274) or 408-945-2550, 24 hours a day, 7 days a week.

■ To use the Adaptec Interactive Support System, call 800-959-

SCSI (7274) or 408-945-2550, 24 hours a day, 7 days a week The system prompts you with questions regarding your problem and then provides step-by-step troubleshooting instructions.

■ To speak with a product support represen tative, call

408-934-SCSI (7274), M–F, 6:00 After hours, on weekends, and on holidays, product support is also available for a fee at 800-416-8066.

A.M. to 5:00 P.M., Pacific Time.

Sales and Ordering Information

■ For sales information, call 800-959-SCSI (7274) or 408-945-2550,

M–F, 6:00

■ To order Adaptec software and SCSI cables, call 800-442-SCS I

(7274) or 408-957-SCSI (7274), M–F, 6:00 Pacific Time.

■ To request additional documentation for Adaptec products,

call 800-934-2766 or 510-732-3829, M–F, 6: 00 Pacific Time.

A.M. to 5:00 P.M., Pacific Time.

A.M. to 5:00 P.M.,

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

Federal Communications Commissi o n Radi o Frequency Interference Statement

WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmfu l interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructio n manual, may c ause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular inst allation. However, if this equipment does cause interference to radio or television equipment reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reor ient or relocat e the receiving antenna.

• Increase the separation between equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/television technician for help.

Use a shielded and properly grounded I/O cable and power cable to ensure compliance of this unit to the specified limit s of the rules .

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation.

Canadian Compliance Statement

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matérial brouilleu r du Canada.

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

AAAA

Adaptec, Inc.

691 South Milpitas Blvd. Milpitas, CA 95035

Copyright © 1993, 1994, 1996, Adaptec, Inc. All righ ts reserved. Adaptec, the Adaptec logo, AHA, and SCSIS elec t are trademarks of Adaptec, Inc. which may be registered in some jurisdictio ns. All other trademarks are owned by their respective owners.

Printed in Singapore Stock No.: 510590-00, Rev B MR 5/96 Information subject to change without notice.

AHA-2840A/2842A Installation Guide Part Number: 510590-00, Rev B Print Spec Number: 492663-00 Current Date: 5/9/96 ECN Date: 6/3/96

Adaptec AHA-2840A, AHA-2842A Installation Guide

Specifications and Main Features

Frequently Asked Questions

User Manual