IBM 3742 Reference Manual page 2

Preface
This publication is a reference manual for customer appli-
cations personnel and key entry supervisory personnel who
wish specific information about the IBM 3741 Data Station
and the IBM 3742 Dual Data Station.
Information in this manual pertains to both the 3741 and
3742 unless specified otherwise. Chapter 1 presents a gen-
eral overview of the 3740 system and the 3741 and the
3742, listing the standard functions and features available.
Chapter 2 presents information about the IBM Diskette.
Chapter 3 deals with operating characteristics in terms of
data flow, modes of operation, disk unit, and buffers.
Chapter 4 defines the display unit and the keyboard. Chap-
ters 5 through 12
~eal
with specific details about functions
and features, and programming information required by
them. Appendix A gives a list of possible error codes, their
causes, and possible recoveries.
First Edition (January 1973)
Changes are continually made to the specifications herein; any such changes will be reported
in subsequent revisions or Technical Newsletters.
A Reader's Comment Form is at the back of this publication. If the form is gone, address
your comments to IBM Corporation, Publications, Department 245, Rochester,
Minnesota 55901.
©
Copyright International Business Machines Corporation 1973
(