View source for VM/370

[[Image:Vm370.jpg|150px|right|VM/370]]

'''VM/370''' was the first [[operating system]] on the [[IBM System/370]] [[mainframe]] platform that supported [[virtual machine]]s. This was a VERY popular OS for people to load onto their mainframes as now they wouldn't have to choose which OS to load for applications, as they could now load ALL of them.

== Documentation sets ==
Bitsavers has a few manuals online.  They can be found here:
*http://www.bitsavers.org/pdf/ibm/370/VM_370/

== Getting this to run ==
Thankfully the software is available, although I've found a few 'issues' with the install process and I've outlayed a tested one here:
[[Installing VM/370 on Hercules]]

== 31bits and beyond ==
There has been a movement to expand the 370 virtual machine to incorporate 31bit addressing of the 390, allowing larger program sizes.  Primarily this has been to allow [[gcc]] to self host under MVS.

There has been regular updates to what is currently known as the '[http://vm370.31bits.net/beta/ six pack]'.

{{semi-stub}}

==Further reading==

* L. H. Seawright and R. A. MacKinnon, [https://cseweb.ucsd.edu/classes/wi11/cse221/papers/seawright79.pdf ''VM/370 - a study of multiplicity and usefulness''], IBM Systems Journal, Vol. 18, No. 1, March 1979

==External links==

* [http://www.leeandmelindavarian.com/Melinda/neuvm.pdf VM and the VM Community]
* [https://pages.cs.wisc.edu/~stjones/proj/vm_reading/ibmrd2505M.pdf The Origin of the VM/370 Time-sharing System]
* [https://web.archive.org/web/20191228115918/http://www.davidsgallery.info/DaveTuttle/Memories/Inside_IBM-DTuttle.html My History in Computing: Inside IBM – 1968 to 1976] - inside VM/370 development (archived version; original now offline)

[[Category: IBM Operating Systems]]