writable control storage

writable control storage

[′rīd·ə·bəl kən′trōl ‚stȯr·ij]
(computer science)
A section of the control storage holding microprograms which can be loaded from a console file or under microprogramming control.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.