Editing Hercules (emulator) (section)

{{Short description|Multi-platform emulator for mainframe software}}
{{Use dmy dates|date=May 2020}}
{{Infobox software
| name                   = Hercules
| logo                   = [[File:Hercules-logo.gif|frameless]]
| screenshot             = Hercules-emulator-running-ubuntu.png
| caption                = Hercules emulator running [[MVS]] in [[Ubuntu]]
| collapsible            = 
| author                 = Roger Bowler
| developer              = [[Jay Maynard]], Jan Jaeger, David "Fish" Trout, Greg Smith, Bernard van der Helm, Ivan Warren, and others<ref>{{citation
 | title     = FAQ
 | place     = [[European Union]]
 | chapter   = 6.1
 | publisher = Hercules 390
 | chapter-url       = http://www.hercules-390.eu/hercfaq.html#6.01}}</ref>
| released               = {{start date text|1999}}
| latest release version = {{wikidata|property|Q101213707|P348}}
| latest release date    = {{Start date and age |df=yes|{{wikidata|qualifier|Q101213707|P348|P577}}}}
| latest preview version = 4.0.0-rc0
| latest preview date    = {{Start date and age|df=yes|2016|12|16}}
| programming language   = [[C (programming language)|C]]
| operating system       = [[Cross-platform]]
| platform               = 
| size                   = 
| language               = 
| genre                  = [[Emulator]]
| license                = [[Q Public License]]
| website                = {{URL|www.hercules-390.eu}}
| repo                   = {{URL|github.com/rbowler/spinhawk|3.xx spinhawk}}<br />{{URL|github.com/hercules-390/hyperion|4.0 hyperion}}
| discontinued           = yes
}}

{{Infobox software
| developer              = [[Jay Maynard]], Jan Jaeger, David "Fish" Trout, Greg Smith, Bernard van der Helm, Ivan Warren, and others<ref>{{citation
 | title     = FAQ
 | place     = [[GitHub]]
 | chapter   = 6.1
 | publisher = SDL Hercules 390
 | chapter-url       = https://sdl-hercules-390.github.io/html/hercfaq.html#6.01}}</ref>
| name                   = SDL 4.x Hyperion
| latest release version = 4.8.0
| latest release date    = {{Start date and age|df=yes|2025|03|27}}
| repo                   = {{URL|github.com/SDL-Hercules-390/hyperion}}
| website                = {{URL|https://sdl-hercules-390.github.io/html/}}
| replaces               = {{URL|https://github.com/hercules-390/hyperion|Hercules 4.0.0 Release Candidate 0}}
}}

'''Hercules''' is a computer [[emulator]] allowing software written for [[IBM mainframe]] computers ([[System/370]], [[System/390]], and [[System z|zSeries/System z]]) and for [[plug compatible]] mainframes (such as [[Amdahl Corporation|Amdahl]] machines) to run on other types of computer hardware, notably on low-cost [[personal computer]]s. Development started in 1999 by Roger Bowler, a mainframe systems programmer.

Hercules runs under multiple parent [[operating system]]s including [[Linux]], [[Microsoft Windows]], [[FreeBSD]], [[NetBSD]], [[Solaris (operating system)|Solaris]], and [[macOS]] and is released under the [[open source software]] license [[QPL]].<ref>{{citation | url = https://opensource.org/licenses/alphabetical | type = list | format = alphabetical | title = Licenses by Name | date = 16 September 2022 | publisher = Open Source Initiative}}</ref> It is analogous to [[Bochs]] and [[QEMU]] in that it emulates [[Central processing unit|CPU]] instructions and select peripheral devices only. A vendor (or distributor) must still provide an operating system, and the user must install it. Hercules was the first mainframe emulator to incorporate 64-bit [[z/Architecture]] support.