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NEXTSTEP for Intel Processors Release 3.3

SCSI Driver Overview

Driver: Adaptec 274x and 284x family
Driver Overview: NeXTanswer #1759
Last Update:
April 23, 1997

Availability Information

A version of this driver is on the CDROM
Newer Released Driver in NeXTanswers*:
Yes, Version 3.32, as NeXTanswer #2024
Newer Beta Driver in NeXTanswers*: No, Version 0.00, as NeXTanswer #

Driver Name / Installer .pkg: Adaptec2740
Driver Type: SCSI
Driver Scope: Product Family
Supported Components: Adaptec AIC-7770
PC Bus / Interface Supported by Driver**: EISA, VL-Bus

General Overview notes: The Adaptec 274x series driver is designed to support the 274x series of EISA SCSI adapters and the 284x series of VL-Bus SCSI adapters. The 2(7,8)42 versions include a floppy controller.

Supported Products / Add-on Adapters:
Adaptec 2740 (EISA) - not tested but should work
Adaptec 2740T (EISA)
Adaptec 2840 (VLB)

Supported Products / Systems (ie integrated into PC System):

Special Features of Driver / Driver Notes:
The 274x is available in a 'T' version that includes two SCSI channels, both channels are supported by this driver.

The onboard floppy controller available on the 2(7,8)42 cards is not supported.

SCSI Driver Details

Supported Connectors:
50-pin Header (Internal SCSI), 50-pin High Density (SCSI-2), 68-pin High Density (Wide SCSI)
Access Mode:
Cache Size Supported**: N/A

Known Problems

The 284x driver uses port 4c00 by default. You must set the DIP switches on your 284x card to use this port. The correct settings are:

The 274x driver uses port 0x4c88 by default.

Driver Version Notes

Future Planning

Future / Update Planning:

Reason for New Driver / Update:
New Driver / Update Timeframe:

New Driver / Update Description:

Note: Information contained in the "Future Planning" section of this document does not constitute a commitment on the part of NeXT to complete the planned development work.

* - Any NeXTanswer number that is blank indicates that a driver will not be released for this version of NEXTSTEP.

** - Indicates information that is inclusive of the entire capability of this driver. Not all devices supported by this driver may include all features listed. Check any available NeXTanswers and the hardware manual for the device for additional information.

Product Vendor

Adaptec Inc.
691 South Milpitas Blvd.
Milpitas, CA 95035

+1 (408) 945 8600 international phone number
+1 (800) 959 7274 USA toll-free (customer support) phone
+1 (408) 945 7727 bulletin board system
+1 (408) 957 7150 faxback system
+1 (408) 262 2533 fax

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