Difference between revisions of "VAX-11/782"
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The '''VAX-11/782''' was an early asymmetric [[multi-processor|dual processor]] [[VAX]]; it had two [[KA780 CPU|KA780]] [[Central Processing Unit|CPUs]] connected to up to four [[MA780 Multiport Memory Option|MA780]] [[multi-port memory]] units (up to 2 Mbytes of [[main memory]] each). All I/O [[peripheral]]s were attached to the 'master' CPU. | The '''VAX-11/782''' was an early asymmetric [[multi-processor|dual processor]] [[VAX]]; it had two [[KA780 CPU|KA780]] [[Central Processing Unit|CPUs]] connected to up to four [[MA780 Multiport Memory Option|MA780]] [[multi-port memory]] units (up to 2 Mbytes of [[main memory]] each). All I/O [[peripheral]]s were attached to the 'master' CPU. | ||
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A UNIBUS expansion cabinet can be added to the VAX-11/782 system. | A UNIBUS expansion cabinet can be added to the VAX-11/782 system. | ||
The [[FP780 Floating-Point Accelerator|FP780]] floating-point accelerator option can be added to each VAX-11/780 processor to decrease the execution time of the floating-point operations and some of the integer arithmetic operations. | The [[FP780 Floating-Point Accelerator|FP780]] floating-point accelerator option can be added to each VAX-11/780 processor to decrease the execution time of the floating-point operations and some of the integer arithmetic operations. | ||
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| + | ==VAX-11/782 simulator== | ||
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| + | There is a special [[SIMH]] [http://www.9track.net/simh/vax782/| VAX-11/782 simulator] with detailed instructions available. | ||
==External links== | ==External links== | ||
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{{Nav VAX}} | {{Nav VAX}} | ||
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| + | [[Category: VAX Superminis]] | ||
| + | [[Category: VAX-11/7xx Systems]] | ||
Latest revision as of 19:57, 19 May 2024
| VAX-11/782 | |
| Summary | |
|---|---|
| Codename: | Atlas |
| OS support (VMS): | VMS 3.0 to V4.7 |
| CPU Details | |
| Number of processors: | 2 |
| CPU technology: | Bipolar Schottky |
| CPU cycle time: | 200ns |
| Instruction-buffer: | 8 bytes [1] |
| Translation-buffer: | 128 entries [1] |
| Control store: | 4K 99-bit words [1] |
| Gate delay: | 3ns |
| User Writable Control Store: | 2K 99-bit words [1] |
| Cache: | 8KB [1] |
| Compatibility mode: | Yes |
| Console processor: | LSI-11 [1] |
| Console device: | RX01 [1] |
| Memory | |
| Physical address lines: | 30 |
| Memory checking: | 8-bit ECC/longword [1] |
| I/O | |
| Max I/O throughput: | 11MB/s |
| LAN support: | optional |
| Performance | |
| VUPs: | 1.8 |
The VAX-11/782 was an early asymmetric dual processor VAX; it had two KA780 CPUs connected to up to four MA780 multi-port memory units (up to 2 Mbytes of main memory each). All I/O peripherals were attached to the 'master' CPU.
VAX-11/782 Attached-processor System
The VAX-11/782 presented in the "VAX Hardware Handbook Volume 1 - 1986":
The VAX-11/782 attached-processor system is a tightly coupled, asymmetrical multiprocessor system based on a MA780 multiport shared memory. The system can provide up to 1.8 times the performance of the VAX-11/780 system. The VAX-11/782 consists of two VAX-11/780 processors and a 4-Mbyte MA780 shared main memory mounted between the VAX CPU cabinets. The main memory can be expanded to 8 Mbytes by adding a second MA780 multiport memory cabinet containing 4 Mbytes of memory. One VAX-11/780 CPU, designated the primary processor, contains 256 Kbytes of local ECC MOS memory for diagnostics programs, a shared memory interface, and a DW780 Unibus Adapter. All I/O devices and peripheral devices connect to the primary processor. The second CPU is designated the attached processor and contains 256 Kbytes of local memory for diagnostic testing and a shared memory interface. The attached processor does not support I/O devices.
The UNIBUS and MASSBUS adapters and the CI and DDI adapters available for the primary processor are the same as those used with the single VAX-11/780 processor system. The mass storage devices available for the primary processor are also the same as those used with the single VAX-11/780 processor system. The VAX-11/782 processor system cannot be connected to VAXcluster components. A UNIBUS expansion cabinet can be added to the VAX-11/782 system. The FP780 floating-point accelerator option can be added to each VAX-11/780 processor to decrease the execution time of the floating-point operations and some of the integer arithmetic operations.
VAX-11/782 simulator
There is a special SIMH VAX-11/782 simulator with detailed instructions available.
External links
- VAX Hardware Handbook Volume 1 - 1986 (VAX-11/782 on pdf pages 36ff)
| v • d • e VAX Computers and Operating Systems |
|---|
| VAX-11/7xx (including VAX 86x0) - VAX-11/780 • VAX-11/785 • VAX-11/750 • VAX-11/730 • VAX 8600 • VAX 8650
VAX 8000 series (excluding VAX 86x0, above) - VAX 82xx/83xx series • VAX 85xx/87xx/88xx series MicroVAXen (many types also come in VAXserver and VAXstation models) - MicroVAX I • MicroVAX II VAXstation Series - VAXstation I • VAXstation II Late Model VAXen - VAX 4000 series • VAX 6000 series • VAX 7000 series • VAX 9000 series • VAX 10000 series |
| Special Purpose VAXen - VAXft series • rtVAX series • Infoserver series
Clones - CM 1700 • TPA-11/580 |
