insights about 360,370, and 370/XA architecture, as well as design concepts for the 303X, 4381, 308X, 9370 and 3090 series. Now, the second edition of this IBM reference has been updated to include the latest pertinent information on the new 370/ESA architecture as well as the new Summit Series announced in September of 1990. The book also includes detailed information about serial, vector, and parallel processing - storage and imput/output architectures - and mainframe communications networks. This book is for assembly language programmers who need to understand 370 and 370/ESA architecture, as well as for managers who need to keep abreast of the state-of-the-art and beyond.

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