Sites related to IBM's large range of platforms including subcategories for AS/400 (iSeries) and S/390 (zSeries).
AS-400
Publications,
Reference,
User Groups,
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Mainframe
IBM Mainframe refers to any computer that is compatible with IBM eserver zSeries computers and their predecessors, dating back to the System/360 first announced by IBM on April 7, 1964.
Services,
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