/ Technical Newsletter This Newsletter No. GN22-0498 Date September 1, 1975
Base Publication No. GA22-7000-4 File No. S/370-01 Previous Newsletters None
IBM System/370 Principles of Operation
©IBM Corp. 1970, 1972, 1973, 1974
This Technical Newsletter provides replacement pages for the subject publication.
Pages to be inserted and/or removed are:
Title Page, Back of Title Page
Preface, Back of Preface
v through viii
15, 16
47,48
59 (text rearrangement only), 60 63 through 66 (text rearrangement only)
67 (text rearrangement only), 68
69, 70 81, 82 (text rearrangment only, both pages)
83 (text rearrangement only), 84
87, 88 (text rearrangement only)
89, 90 (text rearrangement only)
91 (text rearrangement only), 92
93, blank
95,96
119 through 122
125, 126 (text rearrangement only) 129,130 133,134
145, 146
163,164
175 (text rearrangement only), 176
183, blank 205,206 227,228
241, 242 (text rearrangement only)
249, 250 (text rearrangement only)
271 through 274
311 through 326
All pages to which a change has been made carry a revision notice in the upper margin.
A change to the text or to an illustration is indicated by a vertical line to the left of the
change.
Summary of Amendments
This newsletter corrects technical errors appearing in text and in figures, clarifies certain
ambiguous presentations, improves figure placement, and eliminates a number of typo­
graphical errors.
Note: Please file this cover letter at the back of the manual to provide a record of changes. IBM Corporation, Product Publications, P.O. Box 390, Poughkeepsie, N.Y. 12602 Printed in U.S.A.

IBM System/370
Principles of Operation
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