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OS/360 Object File Format
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<p>The OS/360 Object File Format is the standard object module file format for the <a href="/facts/IBM/QszA7nwd">IBM</a> <a href="/facts/DOS%2f360/bT9PzVHd">DOS/360</a>, <a href="/facts/OS%2f360/nQbdNbx6">OS/360</a> and <a href="/facts/VM%2f370/Ymu9SRtX">VM/370</a>, <a href="/facts/Univac/FhJlhtva">Univac</a> <a href="/facts/VS%2f9/5LlmwmBr">VS/9</a>, and <a href="/facts/Fujitsu/6e5gvNSa">Fujitsu</a> <a href="/facts/BS2000/LsvvBUlF">BS2000</a> mainframe operating systems. In the 1990s, the format was given an extension with the XSD-type record for the <a href="/facts/MVS/VPSmB9ML">MVS</a> Operating System to support longer module names in the <a href="/facts/C_Programming_Language/e9JD2RRK">C Programming Language</a>. This format is still in use by the <a href="/facts/Z%2fVSE/b6Hnxc2p">z/VSE</a> operating system (the follow-on to the <a href="/facts/DOS%2f360/bT9PzVHd">DOS/360</a> Operating System). In contrast, it has been superseded by the <a href="/facts/GOFF/IW8HjqBo">GOFF</a> file format on the <a href="/facts/MVS/VPSmB9ML">MVS</a> Operating System (the follow-on to the <a href="/facts/OS%2f360/nQbdNbx6">OS/360</a> Operating System) and on the <a href="/facts/Z%2fVM/uhFIowB3">z/VM</a> Operating System (the follow-on to the <a href="/facts/VM%2f370/Ymu9SRtX">VM/370</a> Operating System). Since the <a href="/facts/MVS/VPSmB9ML">MVS</a> and <a href="/facts/Z%2fVM/uhFIowB3">z/VM</a> loaders will still handle this older format, some compilers have chosen to continue to produce this format instead of the newer <a href="/facts/GOFF/IW8HjqBo">GOFF</a> format. </p>