TX-0 - Revision history

Jnc: /* External links */ Copied without being careful

2026-10-11T07:33:00Z

External links: Copied without being careful

← Older revision		Revision as of 07:33, 11 October 2026
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	* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]		* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]
	* C. Gordon Bell, Gerald Butler, Robert Gray, John E. Mcnamara, Donald Vonada, and Ronald Wilson, [http://gordonbell.azurewebsites.net/Computer_Engineering/00000146.htm The PDP-1 and Other 18-Bit Computers], in C. Gordon Bell, J. Craig Mudge, John. E. McNamara, ''Computer Engineering: A DEC View of Hardware Systems Design'', Digital Press, Bedford, 1978 - Some material on the TX-0, and also covers its descendants (including the [[PDP-1]])		* C. Gordon Bell, Gerald Butler, Robert Gray, John E. Mcnamara, Donald Vonada, and Ronald Wilson, [http://gordonbell.azurewebsites.net/Computer_Engineering/00000146.htm The PDP-1 and Other 18-Bit Computers], in C. Gordon Bell, J. Craig Mudge, John. E. McNamara, ''Computer Engineering: A DEC View of Hardware Systems Design'', Digital Press, Bedford, 1978 - Some material on the TX-0, and also covers its descendants (including the [[PDP-1]])
	* [https://www.digibarn.com/stories/linc/documents/LINC-Personal-Workstation/LINC-Personal-Workstation.pdf The LINC Was Early and Small] - lengthy personal memoir by Wesley Clark; it also covers the ~~TX-0~~		* [https://www.digibarn.com/stories/linc/documents/LINC-Personal-Workstation/LINC-Personal-Workstation.pdf The LINC Was Early and Small] - lengthy personal memoir by Wesley Clark; it also covers the [[LINC]]

	[[Category: Early Computers]]		[[Category: Early Computers]]
	[[Category: 18-bit Computers]]		[[Category: 18-bit Computers]]
	[[Category: Unique Computers]]		[[Category: Unique Computers]]

Jnc: /* External links */ +A collection of images

2025-09-25T15:32:18Z

External links: +A collection of images

← Older revision		Revision as of 15:32, 25 September 2025
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	** [http://bitsavers.org/pdf/mit/tx-0/TX-0_history_1984.txt TX-0 history]		** [http://bitsavers.org/pdf/mit/tx-0/TX-0_history_1984.txt TX-0 history]
	* [https://dspace.mit.edu/bitstream/handle/1721.1/4132/RLE-TR-627-42827671.pdf RLE-TR-627 TX-0 Computer History]		* [https://dspace.mit.edu/bitstream/handle/1721.1/4132/RLE-TR-627-42827671.pdf RLE-TR-627 TX-0 Computer History]
			* [https://mitmuseum.mit.edu/collections/subject/computers-individual-computers-tx-0-computer-288 TX-0 Computer] - a collection of images
	* [https://webmuseum.mit.edu/detail.php?module=subjects&type=related&kv=288 TX-0] - has some images		* [https://webmuseum.mit.edu/detail.php?module=subjects&type=related&kv=288 TX-0] - has some images
	* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]		* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]

Jnc: Designers

2025-06-10T14:19:10Z

Designers

← Older revision		Revision as of 14:19, 10 June 2025
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	The '''TX-0''' was a [[transistor]] computer (reportedly the first ever built), at the MIT Lincoln ~~laboratory~~. It was a predecessor to the [[TX-2]], and an influence on the design of the [[PDP-1]]. It was in some sense a successor to the [[Memory Test Computer]], itself a spin-off of the pioneering [[Whirlwind]].		The '''TX-0''' was a [[transistor]] computer (reportedly the first ever) built at the MIT [[Lincoln Laboratory]]. It was a predecessor to the [[TX-2]], and an influence on the design of the [[PDP-1]]. It was in some sense a successor to the [[Memory Test Computer]], itself a spin-off of the pioneering [[Whirlwind]]. [[Ken Olsen]] was the engineer in charge, and [[Wesley Clark]] was the chief [[logic]] designer.

	For [[input/output\|I/O]], it had a [[Flexowriter]], a [[paper tape]] reader and punch, and a [[display]] [[cathode ray tube\|CRT]]. The [[front panel]], in addition to the usual operations, had an [[array]] of [[switch]]es which allowed any combination of the bottom 16 [[main memory]] locations to be substituted by a line of switches.		For [[input/output\|I/O]], it had a [[Flexowriter]], a [[paper tape]] reader and punch, and a [[display]] [[cathode ray tube\|CRT]]. The [[front panel]], in addition to the usual operations, had an [[array]] of [[switch]]es which allowed any combination of the bottom 16 [[main memory]] locations to be substituted by a line of switches.

Jnc: Add instructions

2024-03-19T22:25:00Z

Add instructions

@@ Line 1: / Line 1: @@
-The '''TX-0''' was a [[transistor]] computer (reportedly the first ever built), at the MIT Lincoln laboratory. Predecessor to the [[TX-2]] and an influence on the [[PDP-1]] design. It was in some sense a successor to the [[Memory Test Computer]], itself a spin-off of the pioneering [[Whirlwind]].
+The '''TX-0''' was a [[transistor]] computer (reportedly the first ever built), at the MIT Lincoln laboratory. It was a predecessor to the [[TX-2]], and an influence on the design of the [[PDP-1]]. It was in some sense a successor to the [[Memory Test Computer]], itself a spin-off of the pioneering [[Whirlwind]].
-==Registers==
+For [[input/output|I/O]], it had a [[Flexowriter]], a [[paper tape]] reader and punch, and a [[display]] [[cathode ray tube|CRT]]. The [[front panel]], in addition to the usual operations, had an [[array]] of [[switch]]es which allowed any combination of the bottom 16 [[main memory]] locations to be substituted by a line of switches.
-These are the registers in the original design.  Later updates changed some register widths and added registers.
+It had a [[word]] size of 18 [[bit]]s, and its only generally program-accessible [[register]] was the [[accumulator]]. The first two bits of the [[instruction]] were an [[operation code]] (yes, it only has 4 basic instructions); the remaining 16 bits were an [[address]] (or specified the action selected for the "operate" instruction). The instructions were:
 {| class="wikitable"

Jnc: /* External links */ +A Functional Description of the TX-0 Computer

2024-03-19T18:41:09Z

External links: +A Functional Description of the TX-0 Computer

← Older revision		Revision as of 18:41, 19 March 2024
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	* [http://bitsavers.org/pdf/mit/tx-0/ TX-0] - documents at [[Bitsavers]]		* [http://bitsavers.org/pdf/mit/tx-0/ TX-0] - documents at [[Bitsavers]]
			** [http://bitsavers.org/pdf/mit/tx-0/6M-4789-1_TX0_funcDescr.pdf A Functional Description of the TX-0 Computer]
	** [http://bitsavers.org/pdf/mit/tx-0/TX-0_history_1984.txt TX-0 history]		** [http://bitsavers.org/pdf/mit/tx-0/TX-0_history_1984.txt TX-0 history]
	* [https://dspace.mit.edu/bitstream/handle/1721.1/4132/RLE-TR-627-42827671.pdf RLE-TR-627 TX-0 Computer History]		* [https://dspace.mit.edu/bitstream/handle/1721.1/4132/RLE-TR-627-42827671.pdf RLE-TR-627 TX-0 Computer History]
			* [https://webmuseum.mit.edu/detail.php?module=subjects&type=related&kv=288 TX-0] - has some images
	* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]		* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]
	* C. Gordon Bell, Gerald Butler, Robert Gray, John E. Mcnamara, Donald Vonada, and Ronald Wilson, [http://gordonbell.azurewebsites.net/Computer_Engineering/00000146.htm The PDP-1 and Other 18-Bit Computers], in C. Gordon Bell, J. Craig Mudge, John. E. McNamara, ''Computer Engineering: A DEC View of Hardware Systems Design'', Digital Press, Bedford, 1978 - Some material on the TX-0, and also covers its descendants (including the [[PDP-1]])		* C. Gordon Bell, Gerald Butler, Robert Gray, John E. Mcnamara, Donald Vonada, and Ronald Wilson, [http://gordonbell.azurewebsites.net/Computer_Engineering/00000146.htm The PDP-1 and Other 18-Bit Computers], in C. Gordon Bell, J. Craig Mudge, John. E. McNamara, ''Computer Engineering: A DEC View of Hardware Systems Design'', Digital Press, Bedford, 1978 - Some material on the TX-0, and also covers its descendants (including the [[PDP-1]])

Jnc: /* External links */ +TX-0 history

2024-02-27T12:39:47Z

External links: +TX-0 history

← Older revision		Revision as of 12:39, 27 February 2024
Line 1:		Line 1:
	The '''TX-0''' was a [[transistor]] computer (reportedly the first ever built), at the MIT Lincoln laboratory. Predecessor to the [[TX-2]] and an influence on the [[PDP-1]] design. It was in some sense a successor to the [[Memory Test Computer]], itself a spin-off of the pioneering [[Whirlwind]].		The '''TX-0''' was a [[transistor]] computer (reportedly the first ever built), at the MIT Lincoln laboratory. Predecessor to the [[TX-2]] and an influence on the [[PDP-1]] design. It was in some sense a successor to the [[Memory Test Computer]], itself a spin-off of the pioneering [[Whirlwind]].

	~~{{semi-stub}}~~

	==Registers==		==Registers==
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	\| 11 \|\| OPR ''x'' \|\| Execute the instruction.		\| 11 \|\| OPR ''x'' \|\| Execute the instruction.
	\|}		\|}

			{{semi-stub}}

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

	* [http://bitsavers.org/pdf/mit/tx-0/ TX-0] - documents at [[Bitsavers]]		* [http://bitsavers.org/pdf/mit/tx-0/ TX-0] - documents at [[Bitsavers]]
			** [http://bitsavers.org/pdf/mit/tx-0/TX-0_history_1984.txt TX-0 history]
	* [https://dspace.mit.edu/bitstream/handle/1721.1/4132/RLE-TR-627-42827671.pdf RLE-TR-627 TX-0 Computer History]		* [https://dspace.mit.edu/bitstream/handle/1721.1/4132/RLE-TR-627-42827671.pdf RLE-TR-627 TX-0 Computer History]
	* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]		* [https://www.computerhistory.org/pdp-1/2e1b209cb40237b91228cdf26a60e3f8/ MIT TX-0 Computer]

Larsbrinkhoff: Many early computers were unique.

2024-01-08T08:26:54Z

Many early computers were unique.

← Older revision		Revision as of 08:26, 8 January 2024
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	[[Category: Early Computers]]		[[Category: Early Computers]]
	[[Category: 18-bit Computers]]		[[Category: 18-bit Computers]]
			[[Category: Unique Computers]]

Jnc: Better cat

2023-12-21T21:40:14Z

Better cat

← Older revision		Revision as of 21:40, 21 December 2023
Line 51:		Line 51:
	* [https://www.digibarn.com/stories/linc/documents/LINC-Personal-Workstation/LINC-Personal-Workstation.pdf The LINC Was Early and Small] - lengthy personal memoir by Wesley Clark; it also covers the TX-0		* [https://www.digibarn.com/stories/linc/documents/LINC-Personal-Workstation/LINC-Personal-Workstation.pdf The LINC Was Early and Small] - lengthy personal memoir by Wesley Clark; it also covers the TX-0

	[[Category: Computers]]		[[Category: Early Computers]]
	[[Category: 18-bit Computers]]		[[Category: 18-bit Computers]]

Aap at 06:56, 19 July 2023

2023-07-19T06:56:00Z

← Older revision		Revision as of 06:56, 19 July 2023
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	\| 00 \|\| STO ''x'' \|\| Store TAC in memory location ''x''.		\| 00 \|\| STO ''x'' \|\| Store TAC in memory location ''x''.
	\|-		\|-
	\| 01 \|\| ADD ''x'' \|\| Add memory location ''x'' to AC. (~~Clear AC first~~ to examine.)		\| 01 \|\| ADD ''x'' \|\| Add memory location ''x'' to AC. (Check MBR to examine.)
	\|-		\|-
	\| 10 \|\| TRN ''x'' \|\| Change to '''normal mode''' and start running at location ''x''.		\| 10 \|\| TRN ''x'' \|\| Change to '''normal mode''' and start running at location ''x''.

Larsbrinkhoff: /* Registers */ This is the first design.

2023-07-19T06:32:38Z

Registers: This is the first design.

← Older revision		Revision as of 06:32, 19 July 2023
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	==Registers==		==Registers==

			These are the registers in the original design. Later updates changed some register widths and added registers.

	{\| class="wikitable"		{\| class="wikitable"
	! Name \|\| Size (bits) \|\| Meaning		! Name \|\| Size (bits) \|\| Meaning
			\|-
			\| AC \|\| 18 \|\| Accumulator
	\|-		\|-
	\| MBR \|\| 18 \|\| Memory buffer register		\| MBR \|\| 18 \|\| Memory buffer register
	\|-
	~~\| AC \|\| 18 \|\| Accumulator~~
	\|-		\|-
	\| MAR \|\| 16 \|\| Memory address register		\| MAR \|\| 16 \|\| Memory address register