Difference between revisions of "MINITS"
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| − | '''MINITS''' was a [[PDP-11]] [[multi-tasking]] [[operating system]] created at [[MIT]], primarily for use in [[data network]] [[host]]s. It was mostly used in the MIT network for 'bridges' ([[router]]s, to use the contemporary nomenclature) and [[terminal]] [[terminal concentrator|concentrators]]. It was also used to drive [[graphics terminal]]s, and provide [[Chaosnet]] [[front end]]s to [[KL10]] processors. | + | '''MINITS''' was a [[PDP-11]] [[multi-tasking]] [[operating system]] created at [[Massachusetts Institute of Technology|MIT]], primarily for use in [[data network]] [[host]]s. It was mostly used in the MIT network for 'bridges' ([[router]]s, to use the contemporary nomenclature) and [[terminal]] [[terminal concentrator|concentrators]]. It was also used to drive [[graphics terminal]]s, and provide [[Chaosnet]] [[front end]]s to [[KL10]] processors. |
Its design is vaguely reminiscent of [[Incompatible Timesharing System|ITS]]. It provided: | Its design is vaguely reminiscent of [[Incompatible Timesharing System|ITS]]. It provided: | ||
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* [[Interlan NI1010A/NI2010A Ethernet Communications Controller|Interlan NI1010A]] Ethernet interface | * [[Interlan NI1010A/NI2010A Ethernet Communications Controller|Interlan NI1010A]] Ethernet interface | ||
* [[UNIBUS Experimental Ethernet interface|3 Mbit Ethernet]] interface | * [[UNIBUS Experimental Ethernet interface|3 Mbit Ethernet]] interface | ||
| − | * Pertek frame buffer | + | * Pertek [[frame buffer]] |
* [[CAMAC]] interface | * [[CAMAC]] interface | ||
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[[Category: Non-DEC Operating Systems]] | [[Category: Non-DEC Operating Systems]] | ||
[[Category: Networking Software]] | [[Category: Networking Software]] | ||
| + | [[Category: Chaos]] | ||
Latest revision as of 19:48, 14 April 2025
MINITS was a PDP-11 multi-tasking operating system created at MIT, primarily for use in data network hosts. It was mostly used in the MIT network for 'bridges' (routers, to use the contemporary nomenclature) and terminal concentrators. It was also used to drive graphics terminals, and provide Chaosnet front ends to KL10 processors.
Its design is vaguely reminiscent of ITS. It provided:
- creation and termination of processes
- a fairly sophisticated main memory allocation system (freed adjoining blocks were automatically combined)
Contents
Networking
The MINITS source calls lots of things 'NCPs', but these have nothing to do with the 'real' NCP. In fact, MINITS doesn't support any IMP interfaces. The use of 'NCP' was just a terminological affliction among the CHAOS people, to whom 'NCP' apparently meant 'protocol implementation' or 'network code'.
Networking protocols supported:
- Address Resolution Protocol
- Chaos - the only full protocol family supported; the rest are all just partial scraps
- IP
- PUP
Hardware
Devices supported:
- DH11
- DL11
- DZ11
- DMC11
- DR11
- DUP11
- DTE20, KL10 front end interface
- CH11, Chaosnet interface
- 3com Ethernet interface
- Interlan NI1010A Ethernet interface
- 3 Mbit Ethernet interface
- Pertek frame buffer
- CAMAC interface
See also
External links
- MINITS source code
- Alternative repository
- How to Build a Terminal Concentrator - combination of ware, software and boot PROMs
