Difference between revisions of "RH780 Massbus Adapter"
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* [http://www.bitsavers.org/pdf/dec/vax/780/EK-RH780-TD-001_RH780_Technical_Description_197903.pdf RH780 Massbus Adapter Technical Description] (EK-RH780-TD-001) <!-- https://bitsavers.org/pdf/dec/vax/780/fiche/EK-RH780-TD_TechDescr_Mar79.pdf --> | * [http://www.bitsavers.org/pdf/dec/vax/780/EK-RH780-TD-001_RH780_Technical_Description_197903.pdf RH780 Massbus Adapter Technical Description] (EK-RH780-TD-001) <!-- https://bitsavers.org/pdf/dec/vax/780/fiche/EK-RH780-TD_TechDescr_Mar79.pdf --> | ||
* [http://www.bitsavers.org/pdf/dec/vax/780/MP00499_RH780_Nov77.pdf RH780 Field Maintenance Print Set] (MP-00499) | * [http://www.bitsavers.org/pdf/dec/vax/780/MP00499_RH780_Nov77.pdf RH780 Field Maintenance Print Set] (MP-00499) | ||
| + | * [http://bitsavers.org/pdf/dec/vax/780/EK-SI780-IN-002_VAX-11_780_Installation_Manual_198201.pdf VAX-11/780 Installation Manual] (EK-SI780-IN-002) - contains a section on the RH780, Chapter 7 (on pp. 63-66 of the PDF) | ||
[[Category: MASSBUS Controllers]] | [[Category: MASSBUS Controllers]] | ||
[[Category: SBI]] | [[Category: SBI]] | ||
Latest revision as of 20:06, 15 May 2024
The RH780 Massbus Adapter was a MASSBUS device controller for the VAX-11/780's Synchronous Backplane Interconnect.
It was implemented on four hex cards, which mount in a custom 6-slot backplane:
| Slot | Board | Acronym | Function |
|---|---|---|---|
| 1 | M8275 | MSI | SBI/MBA interface |
| 2 | M8276 | MIR | internal registers |
| 3 | M8277 | MDP | MASSBUS data paths |
| 4 | M8278 | MCP | MASSBUS control paths |
One slot (5) is unused, and one slot (6) is used (on the back of the backplane) to hold a hex M9041 paddle card, which carries the MASSBUS out on three BC06R flat cables to what appears to be a standard MASSBUS connector, in an 'expansion I/O connector' on the side of the cabinet.
See also
External links
- RH780 Massbus Adapter Technical Description (EK-RH780-TD-001)
- RH780 Field Maintenance Print Set (MP-00499)
- VAX-11/780 Installation Manual (EK-SI780-IN-002) - contains a section on the RH780, Chapter 7 (on pp. 63-66 of the PDF)
