A non-IBM mainframe that runs IBM mainframe operating systems and/or applications. In the late 1960s, RCA's computer division produced the Spectra 70, the first line of machines compatible with IBM's System/360. Later, Amdahl, National Semiconductor (marketed through Itel) and Hitachi entered this segment. Today, Fujitsu (which acquired Amdahl) is the only remaining IBM-compatible mainframe vendor. See HDS and Amdahl.
Hitachi's Skyline
Over the years, several companies offered products that ran IBM mainframe operating systems. This Skyline model from Hitachi could be configured with up to 512 channels and 16 ports into memory, providing enormous transaction processing throughput. (Image courtesy of Hitachi Data Systems.)
Hitachi's Skyline
Over the years, several companies offered products that ran IBM mainframe operating systems. This Skyline model from Hitachi could be configured with up to 512 channels and 16 ports into memory, providing enormous transaction processing throughput. (Image courtesy of Hitachi Data Systems.)
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
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