BA11-M mounting box - Revision history

Jnc: /* External links */ Bitsavers has reorganized a bit

2026-10-09T15:35:30Z

External links: Bitsavers has reorganized a bit

← Older revision		Revision as of 15:35, 9 October 2026
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	==External links==		==External links==

	* [http://www.bitsavers.org/pdf/dec/qbus/~~Digital_Microcomputer_Interfaces_Handbook_1980~~.pdf microcomputer interfaces handbook] - the BA11-M is covered on pp. 67-73 (pp. 75-81 of the PDF)		* [http://www.bitsavers.org/pdf/dec/qbus/EB-20175-20_Digital_Microcomputer_Interfaces_Handbook_1980.pdf microcomputer interfaces handbook] - the BA11-M is covered on pp. 67-73 (pp. 75-81 of the PDF)
	* [http://www.bitsavers.org/pdf/dec/qbus/~~Digital_Microcomputer_Products_Handbook_1985~~.pdf Microcomputer Products Handbook] - the BA11-M is covered in Chapter 53 (pp. 519-522 of the PDF)		* [http://www.bitsavers.org/pdf/dec/qbus/EB-26078-41_Digital_Microcomputer_Products_Handbook_1985.pdf Microcomputer Products Handbook] - the BA11-M is covered in Chapter 53 (pp. 519-522 of the PDF)
	* [http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf PDP-11/03 Engineering Drawings] - the BA11-M is covered on pp. 137-140 of the PDF		* [http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf PDP-11/03 Engineering Drawings] - the BA11-M is covered on pp. 137-140 of the PDF

	[[Category: DEC Mounting Boxes]]		[[Category: DEC Mounting Boxes]]
	[[Category: QBUS Hardware]]		[[Category: QBUS Hardware]]

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2024-07-26T15:10:25Z

+New category

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	[[Category: DEC Mounting Boxes]]		[[Category: DEC Mounting Boxes]]
	[[Category: ~~DEC~~ Hardware]]		[[Category: QBUS Hardware]]

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2024-07-26T15:09:33Z

+New category

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	[[Category: DEC Mounting Boxes]]		[[Category: DEC Mounting Boxes]]
			[[Category: DEC Hardware]]

Jnc: New cat

2023-07-11T01:21:11Z

New cat

← Older revision		Revision as of 01:21, 11 July 2023
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	* [http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf PDP-11/03 Engineering Drawings] - the BA11-M is covered on pp. 137-140 of the PDF		* [http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf PDP-11/03 Engineering Drawings] - the BA11-M is covered on pp. 137-140 of the PDF

	[[Category: DEC ~~Hardware~~]]		[[Category: DEC Mounting Boxes]]

Jnc: /* See also */ BA11-N,S

2023-07-09T03:44:45Z

Jnc: More docs

2023-07-09T03:42:06Z

More docs

← Older revision		Revision as of 03:42, 9 July 2023
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	The BA11-M was replaced by the [[BA23 Enclosure]] from 1983 onwards.		The BA11-M was replaced by the [[BA23 Enclosure]] from 1983 onwards.

			==Further reading==

			* ''BA11-M + PDP-11/23-S Technical Manual'' (EK-1123S-TM) - not available online
			* ''BA11-M Mounting Box Illustrated Parts Breakdown'' (EK-BA11M-IP) - not available online

	==External links==		==External links==

	* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Interfaces_Handbook_1980.pdf microcomputer interfaces handbook] - the BA11-M is covered on pp. 67-73 (pp. 75-81 of the PDF)		* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Interfaces_Handbook_1980.pdf microcomputer interfaces handbook] - the BA11-M is covered on pp. 67-73 (pp. 75-81 of the PDF)
			* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Products_Handbook_1985.pdf Microcomputer Products Handbook] - the BA11-M is covered in Chapter 53 (pp. 519-522 of the PDF)
			* [http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf PDP-11/03 Engineering Drawings] - the BA11-M is covered on pp. 137-140 of the PDF

	[[Category: DEC Hardware]]		[[Category: DEC Hardware]]

Jnc: link to H9270 page

2023-07-08T06:06:36Z

link to H9270 page

← Older revision		Revision as of 06:06, 8 July 2023
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	The '''BA11-M mounting box''' was the first [[QBUS]] [[PDP-11]] [[mounting box]] from [[Digital Equipment Corporation\|DEC]]. It included an [[H780 power supply]] (which provided 18A of +5V, and 3.5A of +12V); and an [[~~QBUS backplanes~~\|H9270-A]] 4-slot [[QBUS#Backplanes\|Q/Q]] [[backplane]], which could hold [[DEC card form factor\|quad-sized]] cards.		The '''BA11-M mounting box''' was the first [[QBUS]] [[PDP-11]] [[mounting box]] from [[Digital Equipment Corporation\|DEC]]. It included an [[H780 power supply]] (which provided 18A of +5V, and 3.5A of +12V); and an [[H9270 backplane\|H9270-A]] 4-slot [[QBUS#Backplanes\|Q/Q]] [[backplane]], which could hold [[DEC card form factor\|quad-sized]] cards.

	In the beginning the BA11-M was for [[PDP-11/03]]'s, but the [[LSI-11]] used in that machine was only [[QBUS#Variable_address_size\|Q16]] capable, making the Q18 H9270-A backplane somewhat excessive. Later on it was used for the Q18/Q22 [[PDP-11/23]]/[[PDP-11/23+]], too.		In the beginning the BA11-M was for [[PDP-11/03]]'s, but the [[LSI-11]] used in that machine was only [[QBUS#Variable_address_size\|Q16]] capable, making the Q18 H9270-A backplane somewhat excessive. Later on it was used for the Q18/Q22 [[PDP-11/23]]/[[PDP-11/23+]], too.

Jnc: link H780

2023-07-07T19:21:42Z

link H780

← Older revision		Revision as of 19:21, 7 July 2023
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	The '''BA11-M mounting box''' was the first [[QBUS]] [[PDP-11]] [[mounting box]] from [[Digital Equipment Corporation\|DEC]]. It included an ~~H780~~ [[power supply]] (which provided 18A of +5V, and 3.5A of +12V); and an [[QBUS backplanes\|H9270-A]] 4-slot [[QBUS#Backplanes\|Q/Q]] [[backplane]], which could hold [[DEC card form factor\|quad-sized]] cards.		The '''BA11-M mounting box''' was the first [[QBUS]] [[PDP-11]] [[mounting box]] from [[Digital Equipment Corporation\|DEC]]. It included an [[H780 power supply]] (which provided 18A of +5V, and 3.5A of +12V); and an [[QBUS backplanes\|H9270-A]] 4-slot [[QBUS#Backplanes\|Q/Q]] [[backplane]], which could hold [[DEC card form factor\|quad-sized]] cards.

	In the beginning the BA11-M was for [[PDP-11/03]]'s, but the [[LSI-11]] used in that machine was only [[QBUS#Variable_address_size\|Q16]] capable, making the Q18 H9270-A backplane somewhat excessive. Later on it was used for the Q18/Q22 [[PDP-11/23]]/[[PDP-11/23+]], too.		In the beginning the BA11-M was for [[PDP-11/03]]'s, but the [[LSI-11]] used in that machine was only [[QBUS#Variable_address_size\|Q16]] capable, making the Q18 H9270-A backplane somewhat excessive. Later on it was used for the Q18/Q22 [[PDP-11/23]]/[[PDP-11/23+]], too.
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	==External links==		==External links==

	* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Interfaces_Handbook_1980.pdf microcomputer interfaces handbook] - BA11-M is covered on pp. 67-73, 75-81 of the PDF		* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Interfaces_Handbook_1980.pdf microcomputer interfaces handbook] - the BA11-M is covered on pp. 67-73 (pp. 75-81 of the PDF)

	[[Category: DEC Hardware]]		[[Category: DEC Hardware]]

Jnc: /* External links */ +microcomputer interfaces handbook

2023-07-02T19:03:39Z

External links: +microcomputer interfaces handbook

← Older revision		Revision as of 19:03, 2 July 2023
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	The BA11-M was replaced by the [[BA23 Enclosure]] from 1983 onwards.		The BA11-M was replaced by the [[BA23 Enclosure]] from 1983 onwards.

			==External links==

			* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Interfaces_Handbook_1980.pdf microcomputer interfaces handbook] - BA11-M is covered on pp. 67-73, 75-81 of the PDF

	[[Category: DEC Hardware]]		[[Category: DEC Hardware]]

Vaxorcist: PDP-11/23 / PDP-11/23+ usage added

2023-06-22T07:03:37Z

PDP-11/23 / PDP-11/23+ usage added

← Older revision		Revision as of 07:03, 22 June 2023
Line 1:		Line 1:
	The '''BA11-M mounting box''' was the first [[QBUS]] [[PDP-11]] [[mounting box]] from [[Digital Equipment Corporation\|DEC]]. It included an H780 [[power supply]] (which provided 18A of +5V, and 3.5A of +12V); and an [[QBUS backplanes\|H9270-A]] 4-slot [[QBUS#Backplanes\|Q/Q]] [[backplane]], which could hold [[DEC card form factor\|quad-sized]] cards.		The '''BA11-M mounting box''' was the first [[QBUS]] [[PDP-11]] [[mounting box]] from [[Digital Equipment Corporation\|DEC]]. It included an H780 [[power supply]] (which provided 18A of +5V, and 3.5A of +12V); and an [[QBUS backplanes\|H9270-A]] 4-slot [[QBUS#Backplanes\|Q/Q]] [[backplane]], which could hold [[DEC card form factor\|quad-sized]] cards.

	~~The~~ BA11-M was for [[PDP-11/03]]'s, but the [[LSI-11]] used in that machine was only [[QBUS#Variable_address_size\|Q16]] capable, making the Q18 H9270-A backplane somewhat excessive.		In the beginning the BA11-M was for [[PDP-11/03]]'s, but the [[LSI-11]] used in that machine was only [[QBUS#Variable_address_size\|Q16]] capable, making the Q18 H9270-A backplane somewhat excessive. Later on it was used for the Q18/Q22 [[PDP-11/23]]/[[PDP-11/23+]], too.

	It was available both with a front panel with a bezel (with 'Power On', 'Run/Halt' and '[[LTC]] On' switches, and power and run status indicators); and also with a blank front panel (for use as an expansion box).		It was available both with a front panel with a bezel (with 'Power On', 'Run/Halt' and '[[LTC]] On' switches, and power and run status indicators); and also with a blank front panel (for use as an expansion box).

← Older revision		Revision as of 03:44, 9 July 2023
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	The BA11-M was replaced by the [[BA23 Enclosure]] from 1983 onwards.		The BA11-M was replaced by the [[BA23 Enclosure]] from 1983 onwards.

			{{semi-stub}}

			==See also==

			* [[BA11-N mounting box]]
			* [[BA11-S mounting box]]

	==Further reading==		==Further reading==