LSI-11/2 - Revision history

Jnc: /* External links */ Manx mirror of Antonio's stuff is gone; Frain Research site is gone; Bitsavers file rename

2026-10-09T18:08:36Z

External links: Manx mirror of Antonio's stuff is gone; Frain Research site is gone; Bitsavers file rename

← Older revision		Revision as of 18:08, 9 October 2026
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	==External links==		==External links==

	* [http://www.bitsavers.org/pdf/dec/qbus/~~Digital_Microcomputer_Products_Handbook_1985~~.pdf Microcomputer Products Handbook] - the LSI-11/2 is covered in Appendix C, pp. C-17–C-19 (pp. 609-611 of the PDF)		* [http://www.bitsavers.org/pdf/dec/qbus/EB-26078-41_Digital_Microcomputer_Products_Handbook_1985.pdf Microcomputer Products Handbook] - the LSI-11/2 is covered in Appendix C, pp. C-17–C-19 (pp. 609-611 of the PDF)
	* [https://~~manx-docs~~.~~org~~/~~collections~~/antonio~~/dec~~/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]		* [https://vt100.net/mirror/antonio/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]
	* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137		* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137
	* [~~http~~://~~web~~.~~frainresearch.org:8080~~/~~projects~~/~~pdp-11~~/lsi-11.php LSI-11 Processors] ~~(mirrored [https~~://~~electrickery~~.nl/~~comp~~/~~pdp11_23plus/frain.rsx11m.io~~/lsi-11.php ~~here])~~		* [https://electrickery.nl/comp/pdp11_23plus/frain.rsx11m.io/lsi-11.php LSI-11 Processors]
			<!-- original http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php is gone -->

	{{PDP-11}}		{{PDP-11}}

Jnc: /* External links */ original at Frain Research went offline; add reference to online mirror

2025-05-31T12:39:33Z

External links: original at Frain Research went offline; add reference to online mirror

← Older revision		Revision as of 12:39, 31 May 2025
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	* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]		* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]
	* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137		* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137
	* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]		* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors] (mirrored [https://electrickery.nl/comp/pdp11_23plus/frain.rsx11m.io/lsi-11.php here])

	{{PDP-11}}		{{PDP-11}}

Jnc: /* Further reading */ +Extended Bus Time-out Logic

2024-07-27T17:25:30Z

Further reading: +Extended Bus Time-out Logic

← Older revision		Revision as of 17:25, 27 July 2024
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	* [[:File:M7270.jpg\|Another LSI-11/2]] - Image; also without FIS chip		* [[:File:M7270.jpg\|Another LSI-11/2]] - Image; also without FIS chip

			==Further reading==

			* ''Extended Bus Time-out Logic'', [[MicroNote]] #032

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

Jnc: /* External links */ +Microcomputer Products Handbook

2023-07-19T16:34:27Z

External links: +Microcomputer Products Handbook

← Older revision		Revision as of 16:34, 19 July 2023
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	==External links==		==External links==

			* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Products_Handbook_1985.pdf Microcomputer Products Handbook] - the LSI-11/2 is covered in Appendix C, pp. C-17–C-19 (pp. 609-611 of the PDF)
	* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]		* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]
	* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137		* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137

Jnc: /* External links */ +FMPS

2023-02-12T19:13:38Z

External links: +FMPS

← Older revision		Revision as of 19:13, 12 February 2023
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	==See also==		==See also==

	* [[:File:M7270.jpg\|Another LSI-11/2]] - ~~Also~~ without FIS chip		* [[:File:M7270.jpg\|Another LSI-11/2]] - Image; also without FIS chip

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

	* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]		* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]
			* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - KD11-HA covered on pp. 131-137
	* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]		* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]

Jnc: /* External links */ +user's guide

2022-12-08T19:45:28Z

External links: +user's guide

← Older revision		Revision as of 19:45, 8 December 2022
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	==External links==		==External links==

			* [https://manx-docs.org/collections/antonio/dec/m7270.pdf M7270 LSI-11/2 microcomputer module user's guide]
	* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]		* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]

Jnc: +Category:DEC Documentation Errors

2022-10-24T22:35:31Z

+Category:DEC Documentation Errors

← Older revision		Revision as of 22:35, 24 October 2022
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	[[Category: PDP-11 QBUS Processors]]		[[Category: PDP-11 QBUS Processors]]
			[[Category: DEC Documentation Errors]]

Jnc: /* External links */ Narrow category

2022-10-11T17:32:48Z

External links: Narrow category

← Older revision		Revision as of 17:32, 11 October 2022
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	{{PDP-11}}		{{PDP-11}}

	[[Category: PDP-11 ~~Processors]]~~		[[Category: PDP-11 QBUS Processors]]
	~~[[Category:~~ QBUS Processors]]

Jnc: +lost img

2022-04-11T06:23:46Z

+lost img

← Older revision		Revision as of 06:23, 11 April 2022
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	'''''Note:''''' The image in the "Microcomputer Products Handbook" (pg. C-18) is erroneous; the order of the chips (from the handle end) is, in fact, [[KEV11]], Control, uROM 1, uROM 0, Data Path (per the KD11-HA print set); the order given in the Handbook is that for the LSI-11 (no doubt an image was re-used without checking).		'''''Note:''''' The image in the "Microcomputer Products Handbook" (pg. C-18) is erroneous; the order of the chips (from the handle end) is, in fact, [[KEV11]], Control, uROM 1, uROM 0, Data Path (per the KD11-HA print set); the order given in the Handbook is that for the LSI-11 (no doubt an image was re-used without checking).

	==~~Links~~==		==See also==

			* [[:File:M7270.jpg\|Another LSI-11/2]] - Also without FIS chip

			==External links==

	* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]		* [http://web.frainresearch.org:8080/projects/pdp-11/lsi-11.php LSI-11 Processors]

Jnc: Link new pages

2019-08-19T16:38:39Z

Link new pages

← Older revision		Revision as of 16:38, 19 August 2019
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	[[Image:KD11-HA CPU.jpg\|thumb\|right\|350px\|LSI-11/2 card]]		[[Image:KD11-HA CPU.jpg\|thumb\|right\|350px\|LSI-11/2 card]]

	The '''LSI-11/2''' (also known as the '''KD11-HA''') is the later ~~version~~ of the [[LSI-11]]. It contains only the [[Central Processing Unit\|CPU]], and nothing else; it is otherwise identical in functionality to the LSI-11, including the use of ~~ODT, rather than the up-to-then conventional~~ [[~~front panel~~]], and it has the same [[QBUS]] limitations as the LSI-11.		The '''LSI-11/2''' (also known as the '''KD11-HA''') is the later type of the [[LSI-11 CPUs]], using the same [[LSI-11 chip set‎]]. It contains only the [[Central Processing Unit\|CPU]], and nothing else; it is otherwise identical in functionality to the [[LSI-11]], including the use of [[QBUS CPU ODT\|ODT]], and it has the same [[QBUS]] limitations as the LSI-11.

	It is a [[DEC card form factor\|dual]] board (M7270)~~, using the same [[LSI-11 chip set‎]]~~; it supports all the same options as the LSI-11. .		It is a [[DEC card form factor\|dual]] board (M7270); it supports all the same options as the LSI-11.

	These include the [[KEV11-A floating point\|KEV11-A]], for the [[PDP-11 Extended Instruction Set\|EIS]]/[[FIS floating point\|FIS]] instructions; the [[KEV11-B Extended Instruction Set\|KEV11-B]], which provides EIS without FIS; and the [[KEV11-C Commercial Instruction Set‎\|KEV11-C]], which provides a subset of the PDP-11 [[PDP-11 Commercial Instruction Set\|CIS]] (it also apparently includes the EIS, but not the FIS).		These include the [[KEV11-A floating point\|KEV11-A]], for the [[PDP-11 Extended Instruction Set\|EIS]]/[[FIS floating point\|FIS]] instructions; the [[KEV11-B Extended Instruction Set\|KEV11-B]], which provides EIS without FIS; and the [[KEV11-C Commercial Instruction Set‎\|KEV11-C]], which provides a subset of the PDP-11 [[PDP-11 Commercial Instruction Set\|CIS]] (it also apparently includes the EIS, but not the FIS).

← Older revision		Revision as of 16:38, 19 August 2019
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	[[Image:KD11-HA CPU.jpg\|thumb\|right\|350px\|LSI-11/2 card]]		[[Image:KD11-HA CPU.jpg\|thumb\|right\|350px\|LSI-11/2 card]]

	The '''LSI-11/2''' (also known as the '''KD11-HA''') is the later ~~version~~ of the [[LSI-11]]. It contains only the [[Central Processing Unit\|CPU]], and nothing else; it is otherwise identical in functionality to the LSI-11, including the use of ~~ODT, rather than the up-to-then conventional~~ [[~~front panel~~]], and it has the same [[QBUS]] limitations as the LSI-11.		The '''LSI-11/2''' (also known as the '''KD11-HA''') is the later type of the [[LSI-11 CPUs]], using the same [[LSI-11 chip set‎]]. It contains only the [[Central Processing Unit\|CPU]], and nothing else; it is otherwise identical in functionality to the [[LSI-11]], including the use of [[QBUS CPU ODT\|ODT]], and it has the same [[QBUS]] limitations as the LSI-11.

	It is a [[DEC card form factor\|dual]] board (M7270)~~, using the same [[LSI-11 chip set‎]]~~; it supports all the same options as the LSI-11. .		It is a [[DEC card form factor\|dual]] board (M7270); it supports all the same options as the LSI-11.

	These include the [[KEV11-A floating point\|KEV11-A]], for the [[PDP-11 Extended Instruction Set\|EIS]]/[[FIS floating point\|FIS]] instructions; the [[KEV11-B Extended Instruction Set\|KEV11-B]], which provides EIS without FIS; and the [[KEV11-C Commercial Instruction Set‎\|KEV11-C]], which provides a subset of the PDP-11 [[PDP-11 Commercial Instruction Set\|CIS]] (it also apparently includes the EIS, but not the FIS).		These include the [[KEV11-A floating point\|KEV11-A]], for the [[PDP-11 Extended Instruction Set\|EIS]]/[[FIS floating point\|FIS]] instructions; the [[KEV11-B Extended Instruction Set\|KEV11-B]], which provides EIS without FIS; and the [[KEV11-C Commercial Instruction Set‎\|KEV11-C]], which provides a subset of the PDP-11 [[PDP-11 Commercial Instruction Set\|CIS]] (it also apparently includes the EIS, but not the FIS).