KE11-A Extended Arithmetic Element - Revision history

Jnc: /* Further reading */ +KE11-A Technical Manual

2023-07-02T19:17:00Z

Further reading: +KE11-A Technical Manual

← Older revision		Revision as of 19:17, 2 July 2023
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	* ''KE11-A User's Guide'' (EK-KE11A-OP ?)		* ''KE11-A User's Guide'' (EK-KE11A-OP ?)
			* ''KE11-A Technical Manual'' (EK-KE11A-TM ?)

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

Jnc: rm bloat

2023-07-02T19:13:04Z

rm bloat

← Older revision		Revision as of 19:13, 2 July 2023
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	* [http://bitsavers.org/pdf/dec/pdp11/1120/KE11-A_ExtendedArithElem.pdf KE11-A extended arithmetic element] (DEC-11-HKEA-D)		* [http://bitsavers.org/pdf/dec/pdp11/1120/KE11-A_ExtendedArithElem.pdf KE11-A extended arithmetic element] (DEC-11-HKEA-D)
	* [http://www.bitsavers.org/pdf/dec/unibus/KE11-A__Extended_Arithmetic_Element_Engineering_Drawings__Nov71.pdf KE11-A extended arithmetic element engineering drawings]		* [http://www.bitsavers.org/pdf/dec/unibus/KE11-A__Extended_Arithmetic_Element_Engineering_Drawings__Nov71.pdf KE11-A extended arithmetic element engineering drawings]

	~~{{PDP-11s}}~~

	[[Category: PDP-11s]]		[[Category: PDP-11s]]
	[[Category: UNIBUS]]		[[Category: UNIBUS]]

Jnc: /* External links */ +coverage in the pdp11/20 processor handbook

2023-04-04T00:26:02Z

External links: +coverage in the pdp11/20 processor handbook

← Older revision		Revision as of 00:26, 4 April 2023
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	==External links==		==External links==

			* [http://www.bitsavers.org/pdf/dec/pdp11/handbooks/PDP1120_Handbook_1972.pdf pdp11/20-15-r20 processor handbook] - the operation of the KE11-A is covered in Chapter 8 (pp. 155-162 of the PDF)
	* [http://bitsavers.org/pdf/dec/pdp11/1120/KE11-A_ExtendedArithElem.pdf KE11-A extended arithmetic element] (DEC-11-HKEA-D)		* [http://bitsavers.org/pdf/dec/pdp11/1120/KE11-A_ExtendedArithElem.pdf KE11-A extended arithmetic element] (DEC-11-HKEA-D)
	* [http://www.bitsavers.org/pdf/dec/unibus/KE11-A__Extended_Arithmetic_Element_Engineering_Drawings__Nov71.pdf KE11-A extended arithmetic element engineering drawings]		* [http://www.bitsavers.org/pdf/dec/unibus/KE11-A__Extended_Arithmetic_Element_Engineering_Drawings__Nov71.pdf KE11-A extended arithmetic element engineering drawings]

Jnc: /* See also */ +KE11-B

2022-12-05T16:17:43Z

Jnc: /* External links */ +cat

2022-12-05T16:15:50Z

External links: +cat

← Older revision		Revision as of 16:15, 5 December 2022
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	[[Category: PDP-11s]]		[[Category: PDP-11s]]
			[[Category: UNIBUS]]

Jnc: +External links (manual, eng drws); details on KM11 use

2021-10-18T22:31:48Z

+External links (manual, eng drws); details on KM11 use

← Older revision		Revision as of 22:31, 18 October 2021
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	The KE11-A was originally produced for use with the [[PDP-11/20]], whose [[KA11 CPU]] did not have multiply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the [[Central Processing Unit\|CPU]], it was also usable with other models, e.g. the [[PDP-11/05]] and [[PDP-11/04]], which likewise did not implement multiplication in [[hardware]], etc.		The KE11-A was originally produced for use with the [[PDP-11/20]], whose [[KA11 CPU]] did not have multiply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the [[Central Processing Unit\|CPU]], it was also usable with other models, e.g. the [[PDP-11/05]] and [[PDP-11/04]], which likewise did not implement multiplication in [[hardware]], etc.

	The KE11-A can be operated with an optional [[KM11-A Maintenance Set]] in order to diagnose faults.		The KE11-A can be operated with an optional [[KM11-A Maintenance Set]] (plugged into [[DEC edge connector contact identification\|slot B02]]) in order to diagnose faults.

	It was replaced by the [[KE11-B Extended Arithmetic Element]], a [[program compatible]] re-implementation on a single hex card.		It was replaced by the [[KE11-B Extended Arithmetic Element]], a [[program compatible]] re-implementation on a single hex card.
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	\| 4 \|\| colspan="2" style="text-align:center;" \| UNIBUS Out \|\| colspan="4" style="text-align:center;" \| M827 Clock & States		\| 4 \|\| colspan="2" style="text-align:center;" \| UNIBUS Out \|\| colspan="4" style="text-align:center;" \| M827 Clock & States
	\|}		\|}

			==See also==

			* ''KE11-A User's Guide'' (EK-KE11A-OP ?)

			==External links==

			* [http://bitsavers.org/pdf/dec/pdp11/1120/KE11-A_ExtendedArithElem.pdf KE11-A extended arithmetic element] (DEC-11-HKEA-D)
			* [http://www.bitsavers.org/pdf/dec/unibus/KE11-A__Extended_Arithmetic_Element_Engineering_Drawings__Nov71.pdf KE11-A extended arithmetic element engineering drawings]

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

	[[Category: PDP-11s]]		[[Category: PDP-11s]]

Jnc: link new page

2021-05-05T12:32:29Z

link new page

← Older revision		Revision as of 12:32, 5 May 2021
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	The '''KE11-A Extended Arithmetic Element''' is an autonomous [[UNIBUS]] [[peripheral]] ~~which~~ can perform a variety of arithmetic or logical [[operator\|operations]]:		The '''KE11-A Extended Arithmetic Element''' is an [[Extended Arithmetic Element]] implemented as autonomous [[UNIBUS]] [[peripheral]]; it can perform a variety of arithmetic or logical [[operator\|operations]]:

	* multiplication		* multiplication
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	(The last is used for implementation of [[floating point]] in [[software]].)		(The last is used for implementation of [[floating point]] in [[software]].)

	It is implemented as several [[DEC card form factor\|quad]] and dual [[printed circuit board\|boards]], plugged into a custom four-slot [[system unit]] (details below).		It is implemented as several [[DEC card form factor\|quad]] and dual [[printed circuit board\|boards]], plugged into a custom four-slot [[system unit]] [[backplane]] (details below).

	The KE11-A was originally produced for use with the [[PDP-11/20]], whose [[KA11 CPU]] did not have multiply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the [[Central Processing Unit\|CPU]], it was also usable with other models, e.g. the [[PDP-11/05]] and [[PDP-11/04]], which likewise did not implement multiplication in [[hardware]], etc.		The KE11-A was originally produced for use with the [[PDP-11/20]], whose [[KA11 CPU]] did not have multiply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the [[Central Processing Unit\|CPU]], it was also usable with other models, e.g. the [[PDP-11/05]] and [[PDP-11/04]], which likewise did not implement multiplication in [[hardware]], etc.
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	* M827 Clock and States		* M827 Clock and States

	and a pair of M234 Register dual-height boards, plugged into the quad custom [[backplane]].		and a pair of M234 Register dual-height boards, plugged into the quad custom backplane.

	===Board locations===		===Board locations===

Jnc: /* Registers */ oops, swapped

2020-06-11T19:04:46Z

Registers: oops, swapped

← Older revision		Revision as of 19:04, 11 June 2020
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	! Register !! Abbreviation !! Address \|\| Size		! Register !! Abbreviation !! Address \|\| Size
	\|-		\|-
	\|'''~~Multiply~~''' \|\| '''~~MUL~~''' \|\| ~~777310~~ \|\| W		\|'''Divide''' \|\| '''DIV''' \|\| 777300 \|\| W
	\|-		\|-
	\|Accumulator \|\| AC \|\| 777302 \|\| W		\|Accumulator \|\| AC \|\| 777302 \|\| W
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	\|Multiplier-Quotient \|\| MQ \|\|777304 \|\| W		\|Multiplier-Quotient \|\| MQ \|\|777304 \|\| W
	\|-		\|-
	\|'''~~Divide~~''' \|\| '''~~DIV~~''' \|\| 777306 \|\| W		\|'''Multiply''' \|\| '''MUL''' \|\| 777306 \|\| W
	\|-		\|-
	\|''Step Counter''$ \|\| ''SC'' \|\| 777310 \|\| B		\|''Step Counter''$ \|\| ''SC'' \|\| 777310 \|\| B

Jnc: /* Registers */ shifts both are 32-bit

2020-06-11T15:56:45Z

Registers: shifts both are 32-bit

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	% The SR is read-only as an individual byte, but can written as a word together with the SC.		% The SR is read-only as an individual byte, but can written as a word together with the SC.

	Division takes as one [[operand]] a 32-[[bit]] value held in the AC (high order) and MQ (low order); a remainder is left in the AC. Multiplication produces a 32-bit product in the AC (high order) and MQ (low order).		Division takes as one [[operand]] a 32-[[bit]] value held in the AC (high order) and MQ (low order); a remainder is left in the AC. Multiplication produces a 32-bit product in the AC (high order) and MQ (low order). Both arithmetic and logical shifts operate on a 32-bit value held in the AC (high order) and MQ (low order).

	===Status Register (SR)===		===Status Register (SR)===

Jnc: /* Registers */ SC r/o as a byte

2020-06-11T15:47:32Z

Registers: SC r/o as a byte

← Older revision		Revision as of 15:47, 11 June 2020
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	\|'''Divide''' \|\| '''DIV''' \|\| 777306 \|\| W		\|'''Divide''' \|\| '''DIV''' \|\| 777306 \|\| W
	\|-		\|-
	\|Step Counter \|\| SC \|\| 777310 \|\| B		\|''Step Counter''$ \|\| ''SC'' \|\| 777310 \|\| B
	\|-		\|-
	\|''Status Register''% \|\| ''SR'' \|\| 777311 \|\| B		\|''Status Register''% \|\| ''SR'' \|\| 777311 \|\| B
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	\|'''Arithmetic Shift''' \|\| '''ASH''' \|\| 777316 \|\| W		\|'''Arithmetic Shift''' \|\| '''ASH''' \|\| 777316 \|\| W
	\|}		\|}

			$ The SC is read-only as an individual byte, but can written as a word together with the SR.<br>
			% The SR is read-only as an individual byte, but can written as a word together with the SC.

	Division takes as one [[operand]] a 32-[[bit]] value held in the AC (high order) and MQ (low order); a remainder is left in the AC. Multiplication produces a 32-bit product in the AC (high order) and MQ (low order).		Division takes as one [[operand]] a 32-[[bit]] value held in the AC (high order) and MQ (low order); a remainder is left in the AC. Multiplication produces a 32-bit product in the AC (high order) and MQ (low order).

	~~% The SR is read-only as an individual byte, but can written as a word together with the SC.~~

	===Status Register (SR)===		===Status Register (SR)===

← Older revision		Revision as of 16:17, 5 December 2022
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	==See also==		==See also==

			* [[KE11-B Extended Arithmetic Element]]

			==Further reading==

	* ''KE11-A User's Guide'' (EK-KE11A-OP ?)		* ''KE11-A User's Guide'' (EK-KE11A-OP ?)