Finally, you can run dozens of multiprocessing Multics instances along side your mission-critical IBM AIX (PASE) and IBM i (OS/400) workloads on IBM Power Systems hardware!

This is the virtualization solution your IT department has been waiting for… well, perhaps it isn’t — but supporting this platform is a great demonstration of both the capabilities of the IBM PASE for i (Portable Application Solutions Environment) runtime for enabling OSS on IBM i, and the excellent compatibility and portability of the DPS8M simulator software.

DPS8M Simulator R3.0.1 Released!

The DPS8M Development Team is proud to present the latest stable version of DPS8M, the DPS‑8/M mainframe simulator: DPS8M Release 3.0.1.

DPS8M is a simulator of the 36‑bit GE Large Systems / Honeywell / Bull 600/6000‑series mainframe computers (Honeywell 6180, Honeywell Series‑60/Level‑68, and Honeywell/Bull DPS‑8/M), descended from the GE‑645 and engineered to support the Multics operating system.

DPS8M Simulator R3.0.0 Released!

The DPS8M Development Team is happy to announce that version R3.0.0 of the DPS8M Simulator has been released.

Many issues were fixed, features added, and performance was improved in many areas.

[2024 Update] DPS8M R3.0.0 downloads are available from the DPS8M Historical Archives. See the release notes and mailing list announcement for (obsolete) details.

DPS8M Simulator R2.0.0 Released!

The DPS8M Development Team team is pleased to announce the release of R2.0.0.

[2024 Update] DPS8M R2.0.0 downloads are available from the DPS8M Historical Archives. See the (legacy) RingZero Release 2.0.0 page and mailing list announcement for (obsolete) details.

• Increased stability
• Increased performance
• Improved operator console scripting
• Improved operator console functionality
• GTSS fixes
• Improved FNP networking controls
• Devices.txt file eliminated
• All disks type supported
• Optional support for multiple simulated CPUs

Multics History: https://multicians.org/
Multics Now: https://multics-wiki.swenson.org/
DPS8M Homepage: https://dps8m.gitlab.io/
DPS8M Simulator Legacy Wiki: https://ringzero.wikidot.com/
DPS8M Developers Wiki: https://gitlab.com/dps8m/dps8m/-/wikis
DPS8M Simulator Repository: https://gitlab.com/dps8m/dps8m/

DPS8M Simulator R1.0.0 Released!

The DPS8M Development Team is pleased to announce the release of DPS8M R1.0.0.

[2024 Update] DPS8M R1.0.0 downloads are available from the DPS8M Historical Archives. See the (legacy) RingZero Release 1.0.0 page for (obsolete) details.

This release features:

• FNP emulation rewrite
• APU rewrite
• IMFT support
• A multitude of bug fixes

This release of the simulator should be compatible with all Multics releases, but has only been tested against MR12.6e and MR12.6f Beta.