System/IBM System/370-XA

The IBM System/370 (S/370) is a range of IBM mainframe computers announced as the successors to the System/360 family on June 30, 1970. The series mostly

IBM System/370-XA is an instruction set architecture introduced by IBM in 1983 for the IBM 308X processors.: 198  It extends the IBM System/370 architecture

a family of IBM virtual machine operating systems used on IBM mainframes System/370, System/390, zSeries, System z and compatible systems, including the

IBM Enterprise Systems Architecture is an instruction set architecture introduced by IBM as ESA/370 in 1988. It is based on the IBM System/370-XA architecture

1960s, 370 for 1970s. Enterprise System/9000 (ES/9000), as in 360 for 1960s, 370 for 1970s. Enterprise Systems Architecture/390 (ESA/390) was IBM's last