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Hercules is a computer emulator allowing software written for IBM mainframe computers (System/370, System/390, and zSeries/System z) and for plug compatible mainframes (such as Amdahl machines) to run on other types of computer hardware, notably on low-cost personal computers. Development started in 1999 by Roger Bowler, a mainframe systems ...
On May 17, 1983, IBM announced [5] MVS/370 Data Facility Product (MVS/370 DFP), 5665-295, for MVS/SP Version 1 Release 3, replacing [b] the same five programs as DFP for MVS/XA. On February 5, 1985, IBM announced [ 6 ] MVS/XA Data Facility Product (MVS/XA DFP) Version 2, 5655-XA2, as a replacement for MVS/XA Data Facility Product Version 1 ...
MVS has now evolved into z/OS; older MVS releases are no longer supported by IBM and, since 2007, only 64-bit z/OS releases are supported. z/OS supports running older 24-bit and 31-bit MVS applications alongside newer 64-bit applications. MVS releases up to 3.8j (24-bit, released in 1981) were freely available and it is now possible to run the ...
An IBM System Z10 mainframe computer on which z/OS can run. z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. [2] It derives from and is the successor to OS/390, which in turn was preceded by a string of MVS versions.
Beginning with Linux kernel version 4.1 released in early 2015, Linux on IBM Z is only available as a 64-bit operating system compatible with z/Architecture mainframes. Previously, Linux on IBM Z was also available as a 32-bit operating system, with 31-bit addressing, compatible with older model mainframes introduced prior to 2000's z900 model ...
OS/390 was introduced in late 1995 in an effort to simplify the packaging and ordering for the key, entitled elements needed to complete a fully functional Multiple Virtual Storage (MVS) operating system package. These elements included, but were not limited to:
The Job Entry Subsystem (JES) is a component of IBM's MVS mainframe operating systems that is responsible for managing batch workloads. In modern times, there are two distinct implementations of the Job Entry System called JES2 and JES3.
Starting with z/TPF 1.1, Linux is the supported build platform; executable programs intended for z/TPF operation must observe the ELF format for s390x-ibm-linux. Using TPF requires a knowledge of its Command Guide [ 14 ] since there is no support for an online command "directory" or "man"/help facility to which users might be accustomed.