Adaptec 2740A - AHA Storage Controller Fast SCSI 10 MBps Support and Manuals
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User Manual - Page 13
... This Manual
This manual provides complete instructions on maximizing the performance of your host adapter.
Chapter 4, Troubleshooting, has information to install the host adapter and SCSI devices.
Appendix D, Disk Drives Over 1 Gigabyte, describes Adaptec's extended translation feature which may be of use the Adaptec AHA-2740 Series of host adapters.
Appendix A, Specifications...
User Manual - Page 14
...xii
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev.
the autoexec.bat file ..).
Helvetica Italics Used as a place holder for text you locate specific information quickly. is only supported ..) and document reference (..
Conventions
The following typographic conventions are used in this User's Manual. Helvetica Used for screen messages (..Enter Password...
User Manual - Page 26
...: 9/1/93
ECN Date: 9/14/93
1-9 Introduction
Adaptec Technical Support
The AHA-2740 Series has been specifically developed for Adaptec products can be
requested by calling 800-442-7274,
M-F: 5:00 a.m. to 6:00 p.m., PST.
• Additional documentation for easy installation and use. Milpitas, CA 95035
Ì
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. Literature...
User Manual - Page 31
... that support bus master functions.
• As with any standard bus, the wires in this chapter.)
• To identify each SCSI device (including the host adapter) located on the SCSI bus must be properly terminated. (Termination on the SCSI bus is discussed in detail later in this chapter.)
2-4
Adaptec AHA-2740 Series User's Manual
Stock...
User Manual - Page 64
... Support for removable drives means only that the BIOS allows for each option, press the Enter key. Configuring the Host Adapter
BIOS Configuration
BIOS Configuration allows you to configure the host adapter BIOS. Use the cursor keys to move between options. The default setting is Boot Device Only.
Disabled -
Adaptec AHA-2740 Series User's Manual
Stock...
User Manual - Page 68
... BIOS Scan This option determines whether or not the host adapter BIOS supports devices attached to yes, the host adapter BIOS controls the SCSI device.
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. Include in erratic behavior or a hang condition. When set to no , the host adapter BIOS will not search the SCSI...
User Manual - Page 69
...up .
3-18
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. Device Not Found
When set to no, the BIOS does not attempt to display en error message if the...set to no, the SCSI device will all supported devices respond to yes, the SCSI Start Unit Command is no.
When set to the host adapter.
The default setting is sent to find the device during boot-up . When set...
User Manual - Page 85
... maximum 5.25 volts maximum
SCSI Interface
Electrical Interface
These are the specifications listed in ANSI X3.131-1986 for single-ended operation. Output Signals
Signal VOL
VOH
Definition
Characteristics
Low-level output voltage 0.0 to 5.25 volts DC (signal negation)
A-4
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. C (Page A-4)
Print Spec Number: 491709...
User Manual - Page 86
..., compatible with unshielded Alternative 1 connector, as specified in ANSI X3.131-1986.
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. Specifications
Input Signals
SCSI inputs meet the following electrical characteristics on each signal, including both receivers and passive drivers:
Table A-3. C (Page A-5)
Print Spec Number: 491709-00 Rev C
Current Date: 9/1/93...
User Manual - Page 93
...running MS-DOS or MS-DOS with Windows, Adaptec EZ-SCSI I/O Operating Environment Software makes driver installation easier than fixed disk devices and CD-ROM drives, check the hardware documentation for instructions on installing and running Adaptec EZ-SCSI.
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B-4
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. Adaptec EZ-SCSI is designed to interface directly with...
User Manual - Page 96
... because it allows data to disable synchronous negotiation. Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. You should disable the host adapter BIOS if the peripherals on the SCSI bus (for example, CD-ROM drives) are all controlled by device drivers and do not support synchronous negotiation and may malfunction if they receive...
User Manual - Page 98
... DMA Services (VDS) support and enhanced Windows support. C (Page C-5)
Print Spec Number: 491709-00 Rev C
Current Date: 9/1/93
ECN Date: 9/14/93
C-5 The drivers that are installed will give DOS users the best performance possible under DOS, but also includes ASPI management software to simplify installation of device drivers under not only DOS, but Windows.
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Adaptec AHA-2740 Series...
User Manual - Page 110
... a positive (+) and negative (-) polarity component of the signal. Abbreviated CDB.
Common Command Set A de facto standard SCSI command set for all the control information it needs to execute a SCSI command. Glossary-5
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. Device driver programs are stored on the SCSI bus interface. Abbreviated CCB. Differential signals...
User Manual - Page 115
...driver feature that allows the host adapter to and from memory via the computer's I/O ports. SCSI Bus One or more than one host adapter, each adapter has its own separate SCSI bus. A bus interface standard that a single host adapter transfer can transfer to interface with the host computer.
Glossary-10
Adaptec AHA-2740... Series User's Manual
Stock Number: ...
User Manual - Page 120
...1-4, 3-17 Default settings 1-7 Device driver software 3-17 Disconnect/...Error if device not found 3-18 Error message 3-18 Extended translation 1-7, 3-14, D-1 - D-5 EZ-SCSI See Adaptec EZ-SCSI
F
Fdisk command D-4 Features 1-4 FIFO 1-7, 3-7 Floppy disk drive 2-15, 2-20, A-8
connector 1-7, 2-7, 2-8 controller 1-4, 1-7, 2-7 disabling the drive 1-8, 2-20
Adaptec AHA-2740 Series User's Manual...
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