Instruction set - Revision history

Jnc: 'instruction set' is better equivalent for 'order code' than 'object code' (see EDSAC document)

2025-11-06T08:53:03Z

'instruction set' is better equivalent for 'order code' than 'object code' (see EDSAC document)

← Older revision		Revision as of 08:53, 6 November 2025
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	Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.		Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.

	Some early computers used the alternative term '''order code''' for the instruction set.		Some early computers used the alternative term '''order code''' for the instruction set (and '''order''' for [[instruction]]). This was more common in the UK; especially at Cambridge (on the [[EDSAC]], and descendants such as the [[LEO]]). In the US, uses included several [[Lincoln Laboratory]] computers.

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			==External links==

			* [https://www.cl.cam.ac.uk/relics/orders.notes.html The EDSAC Order Code]

	[[Category: Computer Basics]]		[[Category: Computer Basics]]

Jnc: Another, early, term

2023-06-03T17:53:04Z

Another, early, term

← Older revision		Revision as of 17:53, 3 June 2023
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	Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.		Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.

			Some early computers used the alternative term '''order code''' for the instruction set.

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	[[Category: Computer Basics]]		[[Category: Computer Basics]]

Jnc: +catz

2018-12-19T23:17:18Z

+catz

← Older revision		Revision as of 23:17, 19 December 2018
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			[[Category: Computer Basics]]

Jnc: Correct cat

2018-10-19T12:21:36Z

Correct cat

← Older revision		Revision as of 12:21, 19 October 2018
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	Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.		Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.

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Jnc: avoid redir

2017-09-21T19:29:35Z

avoid redir

← Older revision		Revision as of 19:29, 21 September 2017
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	An '''instruction set''' refers to the repertoire of [[instruction]]s provided by any particular [[~~central processing unit~~\|CPU]] [[architecture]].		An '''instruction set''' refers to the repertoire of [[instruction]]s provided by any particular [[Central Processing Unit\|CPU]] [[architecture]].

	Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.		Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.

	{{stub}}		{{stub}}

Jnc: add a bit more about data sources/destinations

2017-09-21T16:26:42Z

add a bit more about data sources/destinations

← Older revision		Revision as of 16:26, 21 September 2017
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	An '''instruction set''' refers to the repertoire of [[instruction]]s provided by any particular [[central processing unit\|CPU]] [[architecture]]. Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set.		An '''instruction set''' refers to the repertoire of [[instruction]]s provided by any particular [[central processing unit\|CPU]] [[architecture]].

			Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set. For example, some early machines only included a single [[register]], the accumulator, and were otherwise a [[load-store architecture]]; eventually provision for multiple registers became common. Also, it is now common for instructions to be able to use a [[stack]] as the source or destination for data.

	{{stub}}		{{stub}}

Jnc: Stubby, but a start

2017-09-21T16:20:06Z

Stubby, but a start

New page

An '''instruction set''' refers to the repertoire of [[instruction]]s provided by any particular [[central processing unit|CPU]] [[architecture]]. Also a key part of an instruction set are the means provided for indicating sources and destinations for data processed by those instruction, the '''addressing modes''' of the instruction set.

{{stub}}