DEC IEZ11 Class Driver for VMS, Version 1.0		SPD 31.41.00

DESCRIPTION

The DEC IEZ11 Class Driver is a VMS layered product which is part of the 
IEZ11 option. The IEZ11 option includes the SCSI488/D bus converter and the 
IEZ11 software.

The DEC IEZ11 Class Driver allows an application written in a higher level 
language or in Macro 32 to monitor, control and interface with IEEE488 
devices using VMS QIO system calls. The driver adheres to the VMS SCSI 
device architecture. 

The IEZ11 driver supports most functions of the IEx11 driver. The majority 
of IEx11 applications can be converted to run on the IEZ11 with only minor 
modifications. 

Installation Test and Demo Software (ITADS) is included in the software 
kit.  It provides a means of verifying that the IEZ11 hardware and software 
are functioning properly and can be used as an application development and 
debug tool.  

The SCSI488/D bus converter is an external box which provides the 
capability of connecting an IEEE488 bus to the SCSI bus of a VAXstation or 
a MicroVAX.  The SCSI488/D bus converter, software and license are ordered 
under a single part number. 

The maximum number of SCSI488/D bus converters that can be supported on a 
single SCSI bus is 6.  This number is reduced by 1 for every I/O unit that 
resides on the SCSI bus.  For example, on a VAXstation 3100 with dual 
RZ23's, one TK50  and one RD40, two IEZ11's could be supported.  As with 
all SCSI buses, other factors including cable length and quality can affect 
the actual number of SCSI devices that can be supported. 

The IEZ11 is supported under the VAXlab Software Library (VSL) V1.4 (SPD 
28-30-xx). VSL is a set of subroutine libraries for real-time data 
acquisition, scientific plotting, and data analysis.

HARDWARE REQUIREMENTS

MicroVAX, VAXstation or VAXserver configuration as specified in the System 
Support Addendum (SSA 31.41.00-x).

SOFTWARE REQUIREMENTS

VMS Operating System

Refer to the System Support Addendum (SSA 31.41.00-x) for availability and 
required versions of prerequisite/optional software.

ORDERING INFORMATION

Software Licenses: QL-YEHA*-**
Software Media: QA-YEHAA-**
Software Documentation: QA-YEHAA-GZ
Software Product Services: QT-YEHA*-**

*   Denotes variant fields. For additional information on available 
    licenses, services and media, refer to the appropriate price book or 
    contact your local Digital office.

Note:	 The software can only be ordered in conjunction with the SCSI488/D 
         bus converter. Refer to the systems and options catalog for 
         IEZ11-** ordering information. 

SOFTWARE LICENSING

This Software is furnished under the licensing provisions of Digital 
Equipment Corporation's Standard Terms and Conditions.  For more 
information about Digital's licensing terms and policies, contact your 
local Digital office. 

LICENSE MANAGEMENT FACILITY SUPPORT

This layered product supports the VMS License Management Facility.

License units for this Product are allocated on a User/Activity basis. 

For more information on the License Management Facility, refer to the VMS 
Operating System Software Product Description (SPD 25.01.xx) or the License 
Management Facility manual of the VMS Operating System documentation set. 

For more information about Digital's licensing terms and policies, contact 
your local Digital office. 


SOFTWARE PRODUCT SERVICES

A variety of service options are available from Digital. For more 
information, contact your local Digital office.

SOFTWARE WARRANTY

Warranty for this software product is provided by Digital with the purchase 
of a license for the product as defined in the Software Warranty Addendum 
of this SPD. 

(R)  The DIGITAL Logo is a registered trademark of Digital Equipment 
     Corporation.
(TM) DEC, DECstation, MicroVAX, VAX, VAXserver, VAXstation and VMS are 
     trademarks of Digital Equipment Corporation.

April 1990
AE-NU46A-TE
