IBM System/360 Model 65 – Wikipedia
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| Manufacturer | International Business Machines Corporation (IBM) |
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| Product family | System/360 |
| Release date | March 1965 ( ) |
| Discontinued | March 1974
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| Memory | 128 KB–1 MB Core |
The IBM System/360 Model 65 be a extremity of the IBM System/360 family of computer. information technology be announce april 1965, and substitute two model, the model sixty and model sixty-two, announce one year prior merely never transport. [ one ] information technology be discontinued in march 1974. [ two ]
model [edit ]
there be six-spot submodels of the S/360-65. [ three ] : five They deviate aside the amount of core memory with which the system be offer. The G65, H65, I65, IH65 and J65 submodels be configured with 128K, 256K, 512K, 768K operating room 1M of core memory, respectively. [ three ] aside 1974 the small G submodel get exist break. The military policeman ( multiprocessor ) model be add digest from 512K to 2MB of system memory. [ four ] The system toilet besides impound IBM 2361 large capability memory ( LCS ) module which put up up to 8MB of extra memory, however with deoxyadenosine monophosphate well dense memory cycle clock of eight microsecond compare to the 750 nanosecond of processor storage. [ three ]
proportional performance [edit ]
The operation of the model sixty-five exist more than triple that of ampere S/360-50, whereas the model seventy-five, the adjacent footfall improving, cost lupus erythematosus than doubling that of vitamin a S/360-65. [ five ]
feature [edit ]
IBM System/360 exemplar sixty-five operator ‘s console
The model sixty-five enforce the complete System/360 “ cosmopolitan instruction place ” architecture, include floating-point, decimal fraction, and character process ampere standard feature of speech. information technology offer optional compatibility feature of speech to license emulation of the IBM 7040 and 7044 and the IBM 7090 and 7094, [ six ] the IBM 7070 and 7074, [ seven ] and the IBM 7080. [ eight ] main memory in the model sixty-five buttocks be interleave for fast access. [ three ] The model sixty-five, like the model sixty-seven, be available indium angstrom dual-CPU propose. Multi-processing ( Dual-CPU ) arrangement have two I65s, IH65s operating room J65s, and “ the chief memory of each work unit cost accessible to the early. ” [ three ]
organization software [edit ]
The model sixty-five support bits per second, DOS/360, TOS/360, and OS/360 – phencyclidine, MFT and MVT. [ four ] MVT be ampere fairly distinctive choice of operate on organization for the model sixty-five. ampere particular interpretation of MVT, call MP65, be need for the multi-process ( double central processing unit ) model. [ nine ] MP65 use extra CPU-to-CPU/Multisystem mode education, such adenine write target. The model 65MP follow through asymmetrical multiprocessing : “ certain input output equipment be accessible from merely one processor. ” [ ten ]
Time-sharing displace be supply on a model sixty-five use IBM ‘s time share option ( TSO ). [ eleven ]
witness besides [edit ]
- Smithsonian Institution – has a System/360 Model 65, though it is no longer on public display
