Difference between revisions of "MINITS"
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| − | [[PDP-11]] operating system created at MIT. | + | '''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]] 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 [[ITS]]. | + | Its design is vaguely reminiscent of [[Incompatible Timesharing System|ITS]]. It provided: |
| − | + | * creation and termination of [[process]]es | |
| + | * a fairly sophisticated [[main memory]] allocation system (freed adjoining blocks were automatically combined) | ||
| − | == | + | ==Networking== |
| − | + | The MINITS [[source]] calls lots of things 'NCPs', but these have nothing to do with the 'real' [[Network Control Program|NCP]]. In fact, MINITS doesn't support any [[IMP interface]]s. The use of 'NCP' was just a terminological affliction among the CHAOS people, to whom 'NCP' apparently meant 'protocol implementation' or 'network code'. | |
| − | * [[Chaosnet]] | + | [[Data network|Networking]] [[protocol]]s supported: |
| − | * [[ | + | |
| + | * [[Address Resolution Protocol]] | ||
| + | * [[Chaosnet]] - the only full [[protocol suite|protocol family]] supported; the rest are all just partial scraps | ||
| + | ** SUPDUP | ||
| + | ** [[TELNET]] | ||
| + | ** Finger | ||
* [[Internet Protocol|IP]] | * [[Internet Protocol|IP]] | ||
* [[PARC Universal Packet|PUP]] | * [[PARC Universal Packet|PUP]] | ||
| − | |||
| − | |||
| − | |||
| − | Hardware | + | ==Hardware== |
| + | |||
| + | [[Peripheral|Devices]] supported: | ||
* [[DH11 asynchronous serial line interface|DH11]] | * [[DH11 asynchronous serial line interface|DH11]] | ||
| Line 23: | Line 28: | ||
* [[DZ11 asynchronous serial line interface|DZ11]] | * [[DZ11 asynchronous serial line interface|DZ11]] | ||
* DMC11 | * DMC11 | ||
| − | * [[DR11 parallel interface|DR11 | + | * [[DR11 parallel interface|DR11]] |
* [[DUP11 synchronous serial line interface|DUP11]] | * [[DUP11 synchronous serial line interface|DUP11]] | ||
* [[DTE20 Ten-Eleven Interface|DTE20]], [[KL10]] front end interface | * [[DTE20 Ten-Eleven Interface|DTE20]], [[KL10]] front end interface | ||
| − | * | + | * [[CH11]], Chaosnet interface |
| − | * 3com Ethernet interface | + | * 3com [[Ethernet]] interface |
| − | * [[Interlan NI1010A/NI2010A Ethernet interface|Interlan NI1010A]] | + | * [[Interlan NI1010A/NI2010A Ethernet interface|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 | ||
| − | {{stub}} | + | {{semi-stub}} |
==External links== | ==External links== | ||
| Line 38: | Line 44: | ||
* [http://github.com/Chaosnet/minits MINITS source code] | * [http://github.com/Chaosnet/minits MINITS source code] | ||
* [https://github.com/PDP-10/its/tree/master/src/mits_s Alternative repository] | * [https://github.com/PDP-10/its/tree/master/src/mits_s Alternative repository] | ||
| + | ** [https://github.com/PDP-10/its/blob/master/src/mits_s/user.7 Process management] | ||
| + | ** [https://github.com/PDP-10/its/blob/master/src/mits_s/fsm.3 Free Storage Manager] | ||
[[Category: PDP-11 Operating Systems]] | [[Category: PDP-11 Operating Systems]] | ||
[[Category: Non-DEC Operating Systems]] | [[Category: Non-DEC Operating Systems]] | ||
Revision as of 01:50, 28 October 2021
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)
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
- Chaosnet - the only full protocol family supported; the rest are all just partial scraps
- SUPDUP
- TELNET
- Finger
- 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
