The IBMBasicassemblylanguageandsuccessors is a series of assemblylanguagesand assemblers made for the IBM System/360 mainframe system and its successors
commonly called MVS, is the most commonly used operating system on the System/370, System/390 andIBM Z IBM mainframe computers. IBM developed MVS, along with
"SVS" (Single Virtual Storage) andIBM itself accepted this terminology and labelled MVS'ssuccessors "MVS/xxx". MVS introduced a new approach to workload
adopt new IBM systems fairly quickly. IBM's current mainframe operating systems, z/OS, z/VM, z/VSE, and z/TPF, are backward compatible successors to those