User’s Guide AHA-1510A/1520A Series ISA-to-SCSI Host Adapter A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AHA-1510A/20A Series User’s Guide A AA A A Stock Number: 510400-00, Rev.
Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 Copyright © 1994, Adaptec, Inc. All rights reserved. Adaptec and the Adaptec logo are trademarks of Adaptec, Inc. which may be registered in some jurisdictions. Printed in Singapore STOCK NO.: 510400-00, Rev. C MA 12/94 A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AHA-1510A/20A Series User’s Guide A AA A A Stock Number: 510400-00, Rev.
▼ ▼ ▼ ▼ AHA-1510A/1520A Series ISA-to-SCSI Host Adapter User’s Guide R A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AHA-1510A/20A Series User’s Guide A AA A A Stock Number: 510400-00, Rev.
Copyright Copyright © 1994 Adaptec, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035. Trademarks Adaptec, the Adaptec logo, AHA, and EZ-SCSI are trademarks of Adaptec, Inc. which may be registered in some jurisdictions.
FCC Compliance Statement 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 harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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▼ ▼ ▼ ▼ Table of Contents Preface Inside This Manual xi Conventions xii Advisories xiii 1 Introduction General Product Information 1-1 Features 1-2 Fast Data Transfer 1-2 Superior Price/Performance Value 1-2 Multitasking 1-2 Connectivity 1-2 Compatibility 1-2 Software Support 1-3 Product Specifications 1-4 Physical Dimensions 1-4 Power Requirements 1-4 Environmental Requirements 1-4 2 Host Adapter Configuration Jumper Block Locations 2-2 Default Settings 2-3 Jumper Block J5 2-4 Jumper Block J6 2-5 Jumper
AHA-1510A/20A Series User’s Guide SCSI Termination 2-10 Synchronous Negotiation 2-10 Interrupt Channel 2-10 ISA Port Address 2-11 SCSI BIOS 2-11 SCSI Boot 2-11 ISA BIOS Address 2-11 Floppy Disk Controller 2-12 Optional Host Adapter Settings 2-12 Data Transfer Mode 2-12 SCSI Floptical Support 2-13 Fast SCSI 2-13 Extended BIOS Translation for DOS Drives > 1 GByte 2-13 3 Hardware Installation Host Adapter Layout 3-1 Terminating the SCSI Bus 3-2 Terminating SCSI Devices 3-2 Terminating the Host Adapter 3-2 Te
Preface 4 Software Support DOS/Windows 4-1 Adaptec EZ-SCSI 4-1 Other Operating Systems 4-2 5 Troubleshooting Operating Problems 5-1 Other Error Messages 5-5 A Support for Large Disk Drives Extended Translation (Using MS-DOS 5.
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▼ ▼ ▼ ▼ List of Figures 2-1 2-2 AHA-1520A/1522A Jumper Blocks 2-2 3-1 3-2 3-3 3-4 3-5 3-6 3-7 Host Adapter Terminators 3-2 3-8 3-9 3-10 3-11 3-12 3-13 Daisy Chaining External SCSI Devices 3-9 AHA-1510A Jumper Block 2-2 Connecting Internal Devices Only 3-3 Connecting External Devices Only 3-4 Connecting Internal and External Devices 3-4 Inserting the Host Adapter in a Slot 3-6 Internal SCSI Ribbon Cable to Host Adapter 3-8 Internal SCSI Ribbon Cable to Internal SCSI Device 3-9 External Cable to Hos
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▼ ▼ ▼ ▼ Preface Inside This Manual This manual explains how to install and use Adaptec AHA-1510A/1520A/1522A host adapters. For convenience, we will refer to these three host adapter models collectively as the AHA-1510A/20A Series. Chapter 1 Introduction has general information about product features, benefits and specifications. Chapter 2 Host Adapter Configuration describes the host adapter factory defaults, optional features, and how to change host adapter settings.
AHA-1510A/20A Series User’s Guide Conventions The following typographic conventions are used in this manual. bold Used for keystrokes (… press the Enter key …). Helvetica Used for operator entry that must be typed exactly as shown (… device=c:aspi2dos.sys …) and for messages on the screen (… Enter Password …). Helvetica Italics Used as a place holder for text you must determine and type in (… enter nn for number …). Also used for program and file names that appear in body text (… the autoexec.bat file …).
Preface Advisories Advisories are quick notes that stress an important point or warn of a potential hazard to your system, your data and/or your personal safety. This manual uses three kinds of advisories: Note: Text set off in this way presents reminders, tips or suggestions that may make it easier for you to install, configure and use your host adapter.
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▼ ▼ ▼ ▼ 1 Introduction General Product Information The AHA-1510A/20A Series consists of three host adapter models: ■ AHA-1510A: ISA-to-SCSI host adapter ■ AHA-1520A: ISA-to-SCSI host adapter with onboard BIOS ■ AHA-1522A: ISA-to-SCSI host adapter with onboard BIOS and floppy drive controller Adaptec’s AHA-1510A/20A Series host adapters break the price/performance barrier with multitasking ISA-to-SCSI I/O performance.
AHA-1510A/20A Series User’s Guide Features Fast Data Transfer ■ 10 MBytes/second synchronous Fast SCSI data rate ■ 5 MBytes/second synchronous SCSI data rate ■ 3 MBytes/second data rate on the ISA bus, the highest speed allowed in the Programmed I/O (PIO) environment) ■ 2 MBytes/second asynchronous SCSI data rate Superior Price/Performance Value ■ High speed PIO data transfer ■ Optional high speed DMA data transfer (supported under OS/2 on EISA-bus computers) ■ Minimal SCSI overhead in single-
Introduction ■ ASPI and software driver support for all major operating systems, including DOS, OS/2, UNIX, and Netware ■ Compatible with a wide variety of computer systems and SCSI devices ■ Full support of SCSI-1 and SCSI-2 ■ Floppy controller option support for all standard floppy disk drives (AHA-1522A only) ■ Optional built-in SCSI Floppy/Floptical diskette drive support ■ Compact design; half-card size fits easily into desktop PCs, as well as many slots in laptop computers Software Suppor
AHA-1510A/20A Series User’s Guide Product Specifications Physical Dimensions ■ Length: 6.875" ■ Width: 4.18" ■ Thickness: 0.5" Power Requirements ■ 5.25 V to 4.75 V tolerance on the ISA power supply Environmental Requirements ■ Temperature (operating or storage) 0-55 oC (32-131 oF) ❒ 1-4 A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AHA-1510A/20A Series User’s Guide A AA A A Stock Number: 510400-00, Rev.
▼ ▼ ▼ ▼ 2 Host Adapter Configuration AHA-1510A/20A Series host adapters are designed to operate as shipped in most ISA-bus and EISA-bus computer systems. This chapter explains the default and optional settings for the AHA-1510A/20A Series host adapter. You will learn when to change the default settings and how to do so. Some AHA-1510A/20A Series configuration parameters, such as SCSI ID and termination, are pre-set at the factory. These default settings are listed on page 2-3.
AHA-1510A/20A Series User’s Guide Jumper Block Locations AHA-1520A host adapters have four jumper blocks, labeled J5, J6, J8 and J9. (These labels are printed on the board next to the jumper blocks.) AHA-1522A host adapters have an additional jumper block, J7, to enable or disable the floppy controller. Figure 2-1 shows the location of these jumper blocks.
Host Adapter Configuration Default Settings AHA-1510A/20A Series host adapters have the default setting shown in the following table. These settings are appropriate for most computer systems. If you want to change any of these settings, see the descriptions of each setting in the following sections.
AHA-1510A/20A Series User’s Guide Jumper Block J5 DT BT M0 M1 SN DN R- R- Default Setting Pin Pair Description DT Set data transfer mode DMA enabled = jumper PIO (programmed I/O)✱ = no jumper DMA transfer mode is not supported under DOS or Windows. It is supported under OS/2 on EISA-bus computers.
Host Adapter Configuration Jumper Block J6 Extra Jumper SD SD SD IC IC DC DC SP Default Setting Pin Pair SD Description Set host adapter SCSI ID = ID 7 ✱ SD SD SD = ID 6 SD SD SD = ID 5 SD SD SD = ID 4 SD SD SD = ID 3 SD SD SD = ID 2 SD SD SD = ID 1 SD SD SD IC = ID 0 SD SD SD Set host adapter IRQ host adapter = IRQ 9 IC IC = IRQ 10 IC IC = IRQ 11 ✱ IC IC = IRQ 12 IC IC You must also set pin pairs on jumper block J9 DC Set host adapter DMA (only if DMA enabled on J5) = Channel 0✱ DC DC =
AHA-1510A/20A Series User’s Guide Jumper Block J7 The host adapter floppy controller is enabled when the jumper is installed on jumper block J7. = Floppy Enabled ✱ = Floppy Disabled ✱ Default setting Caution: If the host adapter floppy controller is enabled, you must disconnect all other floppy controllers to avoid system hang. Jumper Block J8 This jumper block is used only when DMA is enabled on jumper block J5 pin pair DT.
Host Adapter Configuration Jumper Block J9 (AHA-1520A/1522A) I2 I1 I0 I9 AL J6 J4 BE Default Setting Pin Pair Description I2, I1, I0, I9 Set host adapter IRQ channel IRQ 12 = jumper I2 IRQ 11✱ = jumper I1 IRQ 10 = jumper I0 IRQ 9 = jumper I9 (not recommended with Windows 3.x) You must also set the corresponding IC pin pairs on jumper block J6. AL Set port address 340h ✱ = no jumper 140h = jumper (extra jumper provided) The host adapter BIOS supports booting only for the default port address of 340h.
AHA-1510A/20A Series User’s Guide Jumper Block J9 (AHA-1510A) I2 I1 I0 I9 AL Default Setting Pin Pair I2, I1, I0, I9 AL Description Set host adapter IRQ channel IRQ 12 = jumper I2 IRQ 11 ✱ = jumper I1 IRQ 10 = jumper I0 IRQ 9 = jumper I9 (not recommended with Windows 3.x) One and only one of these pairs must be selected for proper operation of the software.
Host Adapter Configuration Host Adapter Settings SCSI Disconnection This setting determines whether the host adapter allows a SCSI device to disconnect from the SCSI bus (sometimes called Disconnect/Reconnect). Enabling disconnection allows the host adapter to perform other operations on the SCSI bus while the SCSI device is temporarily disconnected. When disconnection is allowed, which is the default setting, the SCSI device may disconnect from the SCSI bus.
AHA-1510A/20A Series User’s Guide SCSI Termination The default termination setting AHA-1510A/20A Series host adapters is enabled. Disable termination for the host adapter if you attach SCSI devices to both the internal and external connectors. For more information on host adapter termination, see Terminating the SCSI Bus on page 3-2. Synchronous Negotiation Synchronous negotiation is a SCSI feature that allows the SCSI host adapter and its attached SCSI devices to transfer data in synchronous mode.
Host Adapter Configuration ISA Port Address You probably will not need to change the port address, unless you are installing more than one SCSI host adapter, or you know that the current host adapter port address is in conflict with other devices. Your host adapter must not share its ISA port address with any other device on the computer. The default host adapter ISA port address is 340h. The alternate address is 140h.
AHA-1510A/20A Series User’s Guide Floppy Disk Controller The floppy controller is enabled by default on the AHA-1522A. Standard floppy drives connected to the AHA-1522A onboard floppy connector are not part of the SCSI bus. These drives are controlled by the non-SCSI floppy controller on the host adapter. WARNING: Be sure to disable any other floppy controllers in your system, such as the controller on the motherboard or non-SCSI controllers.
Host Adapter Configuration Fast SCSI This setting determines the maximum synchronous data transfer rate for the host adapter. The Fast SCSI maximum is 10.0 MBytes/sec. Some older SCSI-1 devices, however, do not support Fast SCSI data transfer rate. This may cause your computer to operate erratically or hang. Do not enable Fast SCSI for these devices. If the host adapter is set not to negotiate for synchronous data transfer (i.e.
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▼ ▼ ▼ ▼ 3 Hardware Installation This chapter explains how to physically install the AHA-1510A/20A Series host adapter in your computer and connect SCSI devices to it. The chapter takes you through each of the following steps: ■ Terminating the SCSI bus ■ Changing the SCSI IDs of devices that have duplicate IDs ■ Installing the host adapter in your computer ■ Connecting the SCSI devices to the host adapter See your computer hardware documentation for more information.
AHA-1510A/20A Series User’s Guide Terminating the SCSI Bus A set of resistors called terminators must be either installed in or enabled on the first and last physical devices on each host adapter channel; otherwise, the devices will not operate properly. You may need to change the termination setting on some SCSI devices when you install them.
Hardware Installation The table below shows how termination must be set on the host adapter for the three possible configurations of devices on the SCSI bus. If you need to change the termination setting, follow the instructions in Terminating the SCSI Bus on page 3-2.
AHA-1510A/20A Series User’s Guide Termination for External Devices Only When only external devices are connected to the host adapter, the last device on the external chain of devices should be terminated and the host adapter should be terminated, as shown in Figure 3-3. Host adapter Terminators installed External device No termination External device No termination External device Termination enabled Figure 3-3.
Hardware Installation Setting SCSI IDs Each device on the SCSI bus, including the host adapter, must have a unique SCSI ID. The ID uniquely define each device on the SCSI bus and determine which device controls the bus when two or more devices try to use it at the same time. ID 7 has the highest priority, and ID 0 has the lowest. Setting SCSI IDs is a two-step process: 1 Determine the ID of each device on the SCSI bus. The default ID for the AHA-1510A/20A is ID 7.
AHA-1510A/20A Series User’s Guide 4 Ground yourself by touching an unpainted surface on the computer chassis, then carefully remove the host adapter from its package. 5 Position the host adapter directly over the slot. If your computer has a card guide to align the host adapter, be sure to insert the end of the board in the card guide.
Hardware Installation Connecting SCSI Devices SCSI devices are connected by cables in one continuous line called the SCSI bus. Each host adapter on the AHA-1510A/20A implements a separate SCSI bus, supporting up to seven 8-bit devices. AHA-1510A/20A Series host adapters have an internal and external SCSI connector to which you can attach up to seven SCSI devices. This section explains how to connect both internal and external SCSI devices to the host adapter connectors.
AHA-1510A/20A Series User’s Guide Connecting Internal SCSI Devices To connect an internal SCSI device to the host adapter, you need a 50-connector SCSI ribbon cable with a 50-pin internal connector. If you are attaching more than one internal device, the ribbon cable must have additional connectors. Follow these steps to connect internal SCSI devices to the internal connector on the host adapter: 1 Obtain a SCSI ribbon cable that has enough connectors to accommodate all of the internal SCSI devices.
Hardware Installation 5 To connect other internal SCSI devices, plug the devices into the other connectors on the ribbon cable, as shown in Figure 3-7. Pin 1 Colored stripe Internal SCSI device Figure 3-7. Internal SCSI Ribbon Cable to Internal SCSI Device Connecting External SCSI Devices You can daisy chain up to seven external SCSI devices to the external connector on the host adapter. Daisy chaining means connecting multiple devices in a series, as shown in Figure 3-8.
AHA-1510A/20A Series User’s Guide Follow these steps to connect external SCSI devices: 1 Attach the external SCSI cable to the external SCSI connector, as shown in Figure 3-9. External cable orientation is automatic since connectors can be plugged in only one way. External SCSI Connector External SCSI Cable Figure 3-9. External Cable to Host Adapter 2 Attach the connector at the other end of the external cable to either one of the SCSI connectors on the external SCSI device, as shown in Figure 3-10.
Hardware Installation 3 Daisy chain other external SCSI devices, if any, to the previous device until all devices are connected, as shown in Figure 3-8. Connecting Floppy Drives (AHA-1522A only) The AHA-1522A floppy connector uses a 34-pin floppy ribbon cable with a 34-pin header connector. Be sure to maintain pin-1 orientation, as described in Connecting Internal SCSI Devices on page 3-8. 1 Connect the non-split end of the 34-pin floppy ribbon cable to the floppy connector, as shown in Figure 3-11.
AHA-1510A/20A Series User’s Guide 2 Connect the split end of the 34-pin floppy ribbon cable to the connector on the first floppy drive (A), as shown in Figure 3-12. Pin 1 Colored stripe First floppy drive Figure 3-12. Connecting Floppy Cable to Floppy Drive 3 To connect a second floppy drive, plug the middle connector of the floppy ribbon cable to the connector on the second floppy drive (B), as shown in Figure 3-13.
Hardware Installation Completing Installation Before you reassemble your computer, be sure that ■ The host adapter is firmly seated and secured in the slot ■ The devices on each SCSI bus are properly terminated ■ Each SCSI device on the SCSI bus has a unique SCSI ID ■ Internal and external SCSI devices are firmly connected to the host adapter, and pin-1 orientation is correct ■ Only one floppy controller is enabled (AHA-1522A only) Many computers have floppy controllers on the motherboard or on a
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▼ ▼ ▼ ▼ 4 Software Support DOS/Windows When you are using AHA-1520A/1522A host adapters under DOS, you can connect up to two SCSI hard disk drives per host adapter without additional software. AHA-1510A host adapters always need additional device drivers because they have no onboard BIOS.
AHA-1510A/20A Series User’s Guide To provide support for SCSI devices other than fixed disk devices and CD-ROM drives, check the hardware documentation for those devices. If the device requires ASPI support, you first need to run Adaptec EZ-SCSI to install an ASPI manager, and then install any other software provided with the device. If the device is designed to interface directly with the host adapter, then no ASPI manager is required.
▼ ▼ ▼ ▼ 5 Troubleshooting This chapter explains what to do if you have problems with your system after installing an AHA-1510A/20A Series host adapter. If the information in this chapter does not solve your problems, contact your reseller for support. You can also leave questions on the Adaptec Bulletin Board Service (BBS) at the phone number listed in the front of this manual.
AHA-1510A/20A Series User’s Guide d If two AHA-1520A/1522A host adapters are installed, make sure only one has its BIOS enabled. 4 If you see the message Host Adapter Not Found At Port 340h, check the ISA port address jumper setting. Refer to jumper block J9 in Chapter 2, Host Adapter Configuration. 5 6 Make sure that the floppy disk drive is cabled correctly. Make sure only one floppy controller is enabled in the system. Problem No software driver is installed for the host adapter.
Troubleshooting Problem The aspi2dos ASPI manager is installed. The system will not boot from the SCSI hard disk drive, and the aspi2dos logo does not appear on the screen. Action 1 Make sure that aspi2dos.sys is in the root directory of the boot drive. 2 Make sure that your config.sys file contains this line: device=aspi2dos.sys /d Additional command line options are required for AHA-1510A host adapter boards. See the EZ-SCSI User’s Manual for details.
AHA-1510A/20A Series User’s Guide Problem General problems using a SCSI drive as drive D with another SCSI drive as drive C. Action 1 Make sure that both standard hard disks are set to Not Installed or No Drive Installed with your CMOS Setup program. 2 Make sure that the SCSI drive that you want to use as drive D is set to SCSI ID 1:0. Check your drive manual for information on setting the SCSI ID for that device.
Troubleshooting Other Error Messages Host adapter at port address xxx failed diagnostics. xxx = the port address. This message indicates that there is no host adapter at that port address, that there is an address conflict, or that the host adapter is defective. Reinstall the host adapter. Check cables and jumpers. Check for I/O address conflicts. Confirm that the contents of the motherboard CMOS are set correctly with the Setup program. Failed scanning for SCSI devices.
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▼ ▼ ▼ ▼ A Support for Large Disk Drives Extended Translation (Using MS-DOS 5.0) All current versions of DOS are limited to 1024 cylinders per drive. The standard translation scheme for SCSI host adapters, using 64 heads and 32 sectors, provides a maximum accessible capacity of 1 GByte. As disk drives have recently grown beyond 1 GByte in formatted capacity, they have run up against the DOS 1024-cylinder limit.
AHA-1510A/20A Series User’s Guide Using Fdisk To install a new disk, or to repartition an existing disk, use the fdisk DOS utility as you normally would. The cylinder size increases to 8 MBytes when you enable extended translation. The size of the partition you request must therefore be a multiple of 8 MBytes. If you request a partition size that is not a multiple of 8 MBytes, fdisk rounds up to the nearest whole multiple of 8 MBytes.
▼ ▼ ▼ ▼ B Floptical Drive Support AHA-1520A/1522A host adapters support SCSI Floppies and Floptical diskette drives. This appendix discusses AHA-1520A/1522A 1 Floptical drive support features and provides general information on Floptical drive characteristics. Floptical drives are only supported by the DOS (v.3 and above) and DOS/Windows operating systems at this time. Floptical support is disabled by default.
AHA-1510A/20A Series User’s Guide Floppy Device Drive Assignment Drives A and B are reserved for floppy drives in the DOS environment and may be assigned to either standard diskette drives or Floptical drives. When one Floptical drive is installed, it is recognized as the first, second, or third floppy, depending on the number of standard floppy drives installed in the system. A Floptical drive may be configured as the bootable A drive, with a standard (non-SCSI) floppy drive installed as floppy B.
Floptical Drive Support VHD Format Adaptec EZ-SCSI includes the DOS vhdfmt utility for formatting Floptical VHD diskettes. The vhdfmt program is provided because DOS 5.0 and earlier versions of DOS do not recognize VHD disk media. Use your standard DOS Format utility to format 720 KByte and 1.44 MByte diskettes. Vhdfmt is not intended to be used with standard non-VHD diskettes. See the EZ-SCSI User’s Guide for more information about vhdfmt.
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