MXV11-B Multifunction Option Module - Revision history

Vaxorcist: Section "Boot ROM usage" added

2024-08-26T09:57:10Z

Section "Boot ROM usage" added

Jnc: /* External links */ Frain Research site gone

2024-07-28T00:34:21Z

‎External links: Frain Research site gone

Jnc: /* External links */ +UG

2023-02-17T11:13:13Z

‎External links: +UG

Jnc: New cat scheme

2023-02-16T16:54:07Z

New cat scheme

Jnc: New cat

2022-08-17T00:46:45Z

New cat

Jnc: +link

2020-02-04T15:19:41Z

+link

Jnc: An OK start

2020-01-14T01:11:40Z

An OK start

New page

The '''MXV11-B Multifunction Option Module''' is a [[QBUS]] [[DEC card form factor|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 [[QBUS#Variable address size|Q22]] device.

It contains two [[asynchronous serial line]]s (using the [[DL11 asynchronous serial line interface|DL11]] programming standard), an optional [[clock]], a block of [[main memory]], and some [[read-only memory|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 [[Asynchronous serial line#Break|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 [[alternating current|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 [[Random Access Memory|RAM]]; it can hold a pair of 2, 4, 8 or 16KB ROMs.

[[Category: QBUS Serial Interfaces]]
[[Category: QBUS Memories]]
[[Category: QBUS ROMs]]

← Older revision		Revision as of 09:57, 26 August 2024
Line 6:		Line 6:

	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.
		+
		+	==Boot ROM usage==
		+
		+	You can use the MXV11-B2 ROM chip set ([https://github.com/larsbrinkhoff/DECROMs 23-145E4-00 / 23-146E4-00]) to convert the MXV11-B into a boot module for [[QBUS]] [[PDP-11]]s capable of booting:
		+	* [[RL01]] / [[RL02]] (DL)
		+	* [[RX01]] / [[RX02]] (DX,DY)
		+	* [[TU58]] (DD)
		+	* [[TSV05]] (MS)
		+	* [[MSCP]] type Devices e.g. [[RD51]], [[RX50]] (DU)
		+	* [[DECnet]] via [[DPV11, [[DLV11-E]], [[DLV11-F]], [[DUV11]]

	==See also==		==See also==

@@ Line 18: / Line 18: @@
 * [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&ndash;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.kpxx.ru/FrainResearch/projects/pdp-11/micronotes/micronote19.txt Disabling RAM on the MXV11-BF] ([[MicroNote]] #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]
+* [http://www.kpxx.ru/FrainResearch/projects/pdp-11/multifunction.html Multifunction Modules]
 [[Category: QBUS Asynchronous Serial Interfaces]]
 [[Category: QBUS Memories]]
 [[Category: QBUS ROMs]]

@@ Line 3: / Line 3: @@
 It contains two [[asynchronous serial line]]s (using the [[DL11 asynchronous serial line interface|DL11]] programming standard), an optional [[clock]], a block of [[main memory]], and some [[read-only memory|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 [[Asynchronous serial line#Break|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 [[alternating current|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 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 [[alternating current|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 [[Random Access Memory|RAM]]; it can hold a pair of 2, 4, 8 or 16KB ROMs.