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3 definitions found
 for VM
From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

         Virtual Machine (IBM, OS, IBM 370, ESA, IBM 390)

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

         Virtual Memory (OSF)

From The Free On-line Dictionary of Computing (30 December 2018) :

  Virtual Machine
  Virtual Machine/ESA
  Virtual Machine/System Product
  Virtual Machine/XA
     IBM+pseudo-{operating+system"> (VM) An IBM pseudo-{operating system
     hypervisor running on IBM 370, ESA and IBM 390
     architecture computers.
     VM comprises CP ({Control Program) and CMS ({Conversational
     Monitor System) providing Hypervisor and personal computing
     environments respectively.  VM became most used in the early
     1980s as a Hypervisor for multiple DOS/VS and DOS/VSE
     systems and as IBM's internal operating system of choice.  It
     declined rapidly following widespread adoption of the IBM PC
     and hardware partitioning in microcode on IBM mainframes
     after the IBM 3090.
     VM has been known as VM/SP (System Product, the successor to
     CP/67), VM/XA, and currently as VM/ESA (Enterprise Systems
     Architecture).  VM/ESA is still in used in 1999, featuring a
     web interface, Java, and DB2.  It is still a major IBM
     operating system.
     ["History of VM"(?), Melinda Varian, Princeton University].

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