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Guy Harris (talk | contribs) Fix earlier edit. |
Guy Harris (talk | contribs) Note that the 155, 165, and 195 were the first IBM System/370 machines (so that we link the page for the S/370). |
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The '''IBM System/370 Model 155''' (and the [[IBM System/370 Model 165|Model 165]]),<ref name=IBMarc.165>{{cite web|url=https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3165.html|title=System/370 Model 165|website=IBM Archives|publisher=IBM}}</ref>
were jointly announced Jun 30, 1970<ref name=IBMarc.155>{{cite web|url=https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3155.html|title=System/370 Model 155|website=IBM Archives|publisher=IBM}}</ref> as "designed for ... the Seventies." That same day IBM announced the 370/195.<ref>coming about 14 months after the announcement of the 360/195. Both 195 machines were withdrawn Feb. 9, 1977. see https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP2195.html
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|newspaper=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 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>
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