First Edition (September 1989)
The order number of this publication is SC26-4683-0.
This edition applies to Version 2 Release 4 of MVS/Extended Architecture Data Facility Product,
Program Number 5665-XA2, and to any subsequent releases until otherwise indicated in new editions
or technical newsletters.

This book Is intended to help you use Release 4 of MVS/Extended Architecture
Data Facility Product Version 2 with the IBM 3390 Direct Access Storage Device.
It contains:
1. A summary of the characteristics of the new hardware device, and
2. A reference guide showing the changes that will be made in specific publi
cations in the DPP library to support the new hardware device.
The information in this book must not be used for programming purposes.
This book gives only supplemental information and is not a permanent addition
to the OFF library. It is for you to use until the affected DPP publications are
updated with the information presented here. For a list of the publications that
will be updated, refer to "DPP Publications Affected by this Device" on page vi.

This document has recently been digitised and made available here. Digitising our collections requires significant resources. Please consider making a donation to the Centre if you download this document!  The donate button is at the top of this page, by the search bar.

This manual has been scanned as part of our collection and may be available to view.

Please contact us for details.