DDT - Revision history

Jnc: +DEC details, new cat

2022-06-27T12:21:39Z

+DEC details, new cat

← Older revision		Revision as of 12:21, 27 June 2022
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	'''DDT''' ('''Dynamic Debugging Technique''' - the name is a 'backronym' on the insecticide) is a family of [[~~debug~~]]~~gers~~ with some common characteristics:		'''DDT''' ('''Dynamic Debugging Technique''' - the name is a 'backronym' on the insecticide) is a family of [[debugger]]s with some common characteristics:

	* Most commands are invoked with a single key, plus modifiers.		* Most commands are invoked with a single key, plus modifiers.
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	=== Implementations found on ITS ===		=== Implementations found on ITS ===

	* Exec DDT, also known as NTS DDT, for the PDP-6 and 10.		* Exec DDT, also known as NTS DDT, for the [[kernel]] of the PDP-6 and 10.
	* ~~Timesharing~~ DDT for the PDP-6 and 10.		* [[Time-sharing]] DDT, for [[user]]s' [[process]]es on the PDP-6 and 10.
	* KLDDT specifically for the [[KL10]].		* KLDDT specifically for the [[KL10]].
	* RUG for the PDP-11.		* RUG for the PDP-11.
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	=== DEC implementations ===		=== DEC implementations ===

			[[TENEX]] and its descendant [[TOPS-20]] both had several forms of DDT; one for the users, and another for debugging the kernel. Others included:

	* [[ODT]]		* [[ODT]]

			('''''Note:''''' This does not refer to [[QBUS CPU ODT]], which has neither the capabilities of a true DDT, nor its command [[syntax]], although its extremely simple syntax is a sub-set of that of DDT.)

	=== Implementations under MOS ===		=== Implementations under MOS ===
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	{{semi-stub}}		{{semi-stub}}

	[[Category:~~Software~~]]		[[Category: Debuggers]]

Jnc: typo

2020-10-13T20:47:29Z

typo

← Older revision		Revision as of 20:47, 13 October 2020
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	The original debugger used with the [[MOS operating system]] was a DDT written in PDP-11 [[assembly language]] (like the [[operating system\|OS]] itself); it is not known if that was written from scratch, or came from elsewhere.		The original debugger used with the [[MOS operating system]] was a DDT written in PDP-11 [[assembly language]] (like the [[operating system\|OS]] itself); it is not known if that was written from scratch, or came from elsewhere.

	Later, a version was written in [[portable]] [[C programming language\|C]], and used with MOS (similarly re-written) ~~the~~ on [[PDP-11]]'s, various [[Motorola M68000 Family]] machines, and [[AMD 29000]] machines.		Later, a version was written in [[portable]] [[C programming language\|C]], and used with MOS (similarly re-written) on [[PDP-11]]'s, various [[Motorola M68000 Family]] machines, and [[AMD 29000]] machines.

	== Command list for the MOS portable DDT ==		== Command list for the MOS portable DDT ==

Jnc: /* Command list for the MOS portable DDT */ typo - argh!

2019-10-08T00:52:01Z

Command list for the MOS portable DDT: typo - argh!

← Older revision		Revision as of 00:52, 8 October 2019
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	== Command list for the MOS portable DDT ==		== Command list for the MOS portable DDT ==

	In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. ~~CTRT~~-[). This command set was derived from, but not identical to, those of the originals.		In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. CTRL-[). This command set was derived from, but not identical to, those of the originals.

	<pre>		<pre>

Jnc: /* Command list for the MOS portable DDT */ typo

2019-10-08T00:51:23Z

Command list for the MOS portable DDT: typo

← Older revision		Revision as of 00:51, 8 October 2019
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	== Command list for the MOS portable DDT ==		== Command list for the MOS portable DDT ==

	In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. ~~CFRTL~~-[). This command set was derived from, but not identical to, those of the originals.		In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. CTRT-[). This command set was derived from, but not identical to, those of the originals.

	<pre>		<pre>

Jnc: /* Command list for the MOS portable DDT */ strict accuracy

2019-10-08T00:50:09Z

Command list for the MOS portable DDT: strict accuracy

← Older revision		Revision as of 00:50, 8 October 2019
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	== Command list for the MOS portable DDT ==		== Command list for the MOS portable DDT ==

	In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. CFRTL-[). This command set was derived from, but not identical to, the ~~PDP-1 original~~.		In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. CFRTL-[). This command set was derived from, but not identical to, those of the originals.

	<pre>		<pre>

Jnc: /* Command list for the MOS portable DDT */ Derived, not identical

2019-10-07T14:36:01Z

Command list for the MOS portable DDT: Derived, not identical

← Older revision		Revision as of 14:36, 7 October 2019
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	== Command list for the MOS portable DDT ==		== Command list for the MOS portable DDT ==

	In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. CFRTL-[).		In the list below, '$' means the [[ASCII]] character 'ESCAPE' (i.e. CFRTL-[). This command set was derived from, but not identical to, the PDP-1 original.

	<pre>		<pre>

Jnc: Add MOS DDT command set

2019-10-07T13:32:25Z

Add MOS DDT command set

@@ Line 33: / Line 33: @@
 Later, a version was written in [[portable]] [[C programming language|C]], and used with MOS (similarly re-written) the on [[PDP-11]]'s, various [[Motorola M68000 Family]] machines, and [[AMD 29000]] machines.
 {{semi-stub}}
 [[Category:Software]]

Jnc: Name origin, adopt new format for MOS version

2019-10-07T12:52:08Z

Name origin, adopt new format for MOS version

← Older revision		Revision as of 12:52, 7 October 2019
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	'''DDT''' ('''Dynamic Debugging Technique''') is a family of [[debug]]gers with some common characteristics:		'''DDT''' ('''Dynamic Debugging Technique''' - the name is a 'backronym' on the insecticide) is a family of [[debug]]gers with some common characteristics:

	* Most commands are invoked with a single key, plus modifiers.		* Most commands are invoked with a single key, plus modifiers.
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	DDT was first implemented at MIT for a [[PDP-1]] computer. It was then implemented for [[PDP-6]], [[PDP-10\|-10]], and [[PDP-11\|-11]] computers at MIT. It was also widely used at [[Digital Equipment Corporation\|DEC]].		DDT was first implemented at MIT for a [[PDP-1]] computer. It was then implemented for [[PDP-6]], [[PDP-10\|-10]], and [[PDP-11\|-11]] computers at MIT. It was also widely used at [[Digital Equipment Corporation\|DEC]].

	A version was written in [[portable]] [[C programming language\|C]], and used with the [[MOS operating system]] on [[PDP-11]]'s, various [[Motorola M68000 Family]] machines, and [[AMD 29000]] machines, to replace the original MOS one, written in PDP-11 [[assembly language]].

	== Implementations ==		== Implementations ==
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	=== DEC implementations ===		=== DEC implementations ===

	* [[ODT]]		* [[ODT]]

			=== Implementations under MOS ===

			The original debugger used with the [[MOS operating system]] was a DDT written in PDP-11 [[assembly language]] (like the [[operating system\|OS]] itself); it is not known if that was written from scratch, or came from elsewhere.

	[[~~Category:Software~~]]		Later, a version was written in [[portable]] [[C programming language\|C]], and used with MOS (similarly re-written) the on [[PDP-11]]'s, various [[Motorola M68000 Family]] machines, and [[AMD 29000]] machines.

	{{semi-stub}}		{{semi-stub}}

			[[Category:Software]]

Larsbrinkhoff: Category.

2019-10-07T12:15:18Z

Category.

← Older revision		Revision as of 12:15, 7 October 2019
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	* [[ODT]]		* [[ODT]]

			[[Category:Software]]

	{{semi-stub}}		{{semi-stub}}

Larsbrinkhoff: /* Implementations */ ODT from DEC.

2019-10-07T12:02:42Z

Implementations: ODT from DEC.

← Older revision		Revision as of 12:02, 7 October 2019
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	* Timesharing DDT for [[SITS]].		* Timesharing DDT for [[SITS]].
	* IMDDT for Imlac PDS-1.		* IMDDT for Imlac PDS-1.

			=== DEC implementations ===

			* [[ODT]]

	{{semi-stub}}		{{semi-stub}}