IBM System/370 Model 155: Difference between revisions

Revision as of 01:52, 15 December 2018

Revision as of 00:34, 16 August 2019

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and https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3195.html</ref> They were the first three models of the [[IBM System/370]] line of computers.

Three months later a fourth IBM System/370, the [[IBM System/370 Model 145|Model 145]], was announced. Since none of them came with [[virtual memory]], "which was to be a hallmark of the 370 line"<ref>{{cite newspaper|newspapername=Computerworld|date=November 24, 1980|page=34|url=https://books.google.com/books?id=cKmJJd7R8PIC&pg=PA34#v=onepage&q&f=false|title=What Course "what-course-for -the -3081?}}<"/ref> some said about these early members of the IBM System/370 family, especially about the 165 & 155, that they were not "the real 370 line."<ref group="NB">The 195 was noted as "at the time of its introduction, ... IBM's most powerful computing system" and the 145's [[microcode]] could be upgraded from a floppy disk. By contrast, the 155 & 165 needed a hardware addition priced at $200,000 and $400,000 respectively</ref>

==Limitations==