Difference between revisions of "IBM System/370"
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[[Image:ibm370 in action.jpg|right|150px|thumb|People using a 370]] | [[Image:ibm370 in action.jpg|right|150px|thumb|People using a 370]] | ||
| − | The '''System/370''' continued the tradition of the prior [[System/360]] by expanding the [[instruction set]], and adding the new ability of [[virtualization]]. | + | The '''System/370''' continued the tradition of the prior [[System/360]] by expanding the [[instruction set]], and adding [[hardware]] support for both [[virtual memory]] (except for the first two models announced), and the new ability of [[virtualization]]. |
| + | |||
| + | They ran a variety of software, such as [[MVS]], and the newer [[VM/370]]. | ||
The System/370 was supplanted by the [[S/390]]. | The System/370 was supplanted by the [[S/390]]. | ||
== Specs == | == Specs == | ||
| − | *Sixteen 32-bit control | + | *Sixteen 32-bit control [[register]]s, in supervisor mode only |
| − | *Sixteen 32-bit general purpose | + | *Sixteen 32-bit [[general purpose register]]s |
| − | *Four 64-bit floating point registers (could be paired as two 128-bit floating point registers) | + | *Four 64-bit [[floating point]] registers (could be paired as two 128-bit floating point registers) |
| − | *24 bit address space for a maximum 16MB of RAM (later models: 31 bits) | + | *24 bit [[address space]] for a maximum 16MB of RAM (later models: 31 bits) |
| + | |||
| + | ==Models== | ||
| + | |||
| + | {| class="wikitable" | ||
| + | ! Model !! Announced !! Shipped !! Withdrawn | ||
| + | |- | ||
| + | | 115 || 13 March, 1973 || March, 1974 || 9 March, 1981 | ||
| + | |- | ||
| + | | 115-2 || 10 November, 1975 || April, 1976 || 9 March, 1981 | ||
| + | |- | ||
| + | | 125 || 4 October, 1972 || April, 1973 || 9 March, 1981 | ||
| + | |- | ||
| + | | 125-2 || 10 November, 1975 || February, 1976 || 9 March, 1981 | ||
| + | |- | ||
| + | | 135 || 8 March, 1971 || April, 1972 || 16 October, 1979 | ||
| + | |- | ||
| + | | 135-3 || 30 June, 1976 || February, 1977 || 16 October, 1979 | ||
| + | |- | ||
| + | | 138 || 30 June, 1976 || November, 1976 || 1 November, 1983 | ||
| + | |- | ||
| + | | 145 || 23 September, 1970 || June, 1971 || 10 November, 1971 | ||
| + | |- | ||
| + | | 145-3 || 30 June, 1976 || May, 1977 || 16 October, 1979 | ||
| + | |- | ||
| + | | 148 || 30 June, 1976 || January, 1977 || 1 November, 1983 | ||
| + | |- | ||
| + | | 155 || 30 June, 1970 || January, 1971 || 23 December, 1977 | ||
| + | |- | ||
| + | | 158 || 2 August, 1972 || April, 1973 || 15 September, 1980 | ||
| + | |- | ||
| + | | 158-3 || 26 October, 1976 || September, 1976 || 15 September, 1980 | ||
| + | |- | ||
| + | | 165 || 30 June, 1970 || April, 1971 || 23 December, 1977 | ||
| + | |- | ||
| + | | 168 || 2 August, 1972 || May, 1973 || 15 September, 1980 | ||
| + | |- | ||
| + | | 168-3 || 18 February, 1976 || June, 1976 || 15 September, 1980 | ||
| + | |- | ||
| + | | 195 || 30 June, 1970 || August, 1973 || 9 February, 1977 | ||
| + | |} | ||
| + | |||
| + | Virtual memory hardware upgrades for the Models 155 and 165 (the only S/370 models which did not support virtual memory) were announced shortly after the announcement of the Models 158 and 168, but were available only to customers who already owned a Model 155 or 165. When this was installed, these models were known as 155-II's and 165-II's. | ||
| + | |||
| + | An Attached Processor (AP) version of the Model 158, and [[multi-processor]] versions of the Models 158 and 168, were made available in 1976; these are the “-3” updates. | ||
== Games == | == Games == | ||
| Line 16: | Line 62: | ||
== Emulation == | == Emulation == | ||
| + | |||
The 370 can be emulated by the following emulators: | The 370 can be emulated by the following emulators: | ||
| − | |||
| − | |||
| − | {{ | + | * [[Hercules]] |
| + | * [[PC/370]] | ||
| + | |||
| + | {{semi-stub}} | ||
| + | |||
| + | ==See also== | ||
| + | |||
| + | * [[IBM I/O channel]] | ||
| + | |||
| + | ==Further reading== | ||
| + | |||
| + | * Emerson W. Pugh, Lyle R. Johnson, John H. Palmer, ''IBM's 360 and Early 370 Systems'', MIT Press, Cambridge, 1991 | ||
| + | |||
| + | ==External link== | ||
| + | |||
| + | * [https://web.archive.org/web/20180403200553/https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_FS370.html System/370 - Dates and characteristics] | ||
| − | + | [[Category: IBM Mainframes]] | |
| − | [[Category:IBM | ||
| − | |||
Latest revision as of 13:42, 28 October 2024
The System/370 continued the tradition of the prior System/360 by expanding the instruction set, and adding hardware support for both virtual memory (except for the first two models announced), and the new ability of virtualization.
They ran a variety of software, such as MVS, and the newer VM/370.
The System/370 was supplanted by the S/390.
Specs
- Sixteen 32-bit control registers, in supervisor mode only
- Sixteen 32-bit general purpose registers
- Four 64-bit floating point registers (could be paired as two 128-bit floating point registers)
- 24 bit address space for a maximum 16MB of RAM (later models: 31 bits)
Models
| Model | Announced | Shipped | Withdrawn |
|---|---|---|---|
| 115 | 13 March, 1973 | March, 1974 | 9 March, 1981 |
| 115-2 | 10 November, 1975 | April, 1976 | 9 March, 1981 |
| 125 | 4 October, 1972 | April, 1973 | 9 March, 1981 |
| 125-2 | 10 November, 1975 | February, 1976 | 9 March, 1981 |
| 135 | 8 March, 1971 | April, 1972 | 16 October, 1979 |
| 135-3 | 30 June, 1976 | February, 1977 | 16 October, 1979 |
| 138 | 30 June, 1976 | November, 1976 | 1 November, 1983 |
| 145 | 23 September, 1970 | June, 1971 | 10 November, 1971 |
| 145-3 | 30 June, 1976 | May, 1977 | 16 October, 1979 |
| 148 | 30 June, 1976 | January, 1977 | 1 November, 1983 |
| 155 | 30 June, 1970 | January, 1971 | 23 December, 1977 |
| 158 | 2 August, 1972 | April, 1973 | 15 September, 1980 |
| 158-3 | 26 October, 1976 | September, 1976 | 15 September, 1980 |
| 165 | 30 June, 1970 | April, 1971 | 23 December, 1977 |
| 168 | 2 August, 1972 | May, 1973 | 15 September, 1980 |
| 168-3 | 18 February, 1976 | June, 1976 | 15 September, 1980 |
| 195 | 30 June, 1970 | August, 1973 | 9 February, 1977 |
Virtual memory hardware upgrades for the Models 155 and 165 (the only S/370 models which did not support virtual memory) were announced shortly after the announcement of the Models 158 and 168, but were available only to customers who already owned a Model 155 or 165. When this was installed, these models were known as 155-II's and 165-II's.
An Attached Processor (AP) version of the Model 158, and multi-processor versions of the Models 158 and 168, were made available in 1976; these are the “-3” updates.
Games
Well thankfully there seems to have been some games....
Emulation
The 370 can be emulated by the following emulators:
See also
Further reading
- Emerson W. Pugh, Lyle R. Johnson, John H. Palmer, IBM's 360 and Early 370 Systems, MIT Press, Cambridge, 1991
