MXV11-B Multifunction Option Module: Difference between revisions
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The board contains 128Kbytes of [[Random Access Memory|RAM]]; it can hold a pair of 2, 4, 8 or 16KB ROMs. | The board contains 128Kbytes of [[Random Access Memory|RAM]]; it can hold a pair of 2, 4, 8 or 16KB ROMs. | ||
==See also== | |||
* [[MXV11-A Multifunction Option Module]] | |||
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- not available online | |||
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==External links== | |||
* [https://manx-docs.org/collections/antonio/dec/mxv1bug1.pdf MXV11-B Multi-Function Option Module User Guide] (EK-MXV1B-UG-001) | |||
* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Products_Handbook_1985.pdf Microcomputer Products Handbook] - the MXV11-B is covered on pp. 18–1-18 (pp. 253-270 of the PDF) | |||
* [http://web.frainresearch.org:8080/projects/pdp-11/micronotes/micronote19.txt Disabling RAM on the MXV11-BF] (uNOTE #019) | |||
* [http://www.arclightindustries.com/pics/MXV11-B.pdf MXV11-B Multifunction Option Module] | |||
* [http://web.frainresearch.org:8080/projects/pdp-11/multifunction.php Multifunction Modules] | |||
[[Category: QBUS Asynchronous Serial Interfaces]] | [[Category: QBUS Asynchronous Serial Interfaces]] | ||
[[Category: QBUS Memories]] | [[Category: QBUS Memories]] | ||
[[Category: QBUS ROMs]] | [[Category: QBUS ROMs]] | ||
Revision as of 11:13, 17 February 2023
The MXV11-B Multifunction Option Module is a QBUS dual-height peripheral board (M7195), intended to allow the creation of complete systems in a minimal-sized QBUS backplane. It is very similar to the earlier MXV11-A Multifunction Option Module, except that it is a Q22 device.
It contains two asynchronous serial lines (using the DL11 programming standard), an optional clock, a block of main memory, and some PROM for bootstrap purposes. The serial lines are connected via 10-pin Berg connector headers on the top edge of the card, using the standard DEC asynchronous serial line pinout, and line 1 can be set to halt or boot the machine on a break.
The clock is program compatible with the KW11-L Line Time Clock, but it is not a line time clock, since it cannot be driven from AC wall power; it can be connected to 50Hz, 60Hz, or 800Hz clock signals from a divided-down 20MHz crystal which is also used to provide the clock to the serial lines.
The board contains 128Kbytes of RAM; it can hold a pair of 2, 4, 8 or 16KB ROMs.
See also
External links
- MXV11-B Multi-Function Option Module User Guide (EK-MXV1B-UG-001)
- Microcomputer Products Handbook - the MXV11-B is covered on pp. 18–1-18 (pp. 253-270 of the PDF)
- Disabling RAM on the MXV11-BF (uNOTE #019)
- MXV11-B Multifunction Option Module
- Multifunction Modules
