Dynamic debugging technique
Dynamic Debugging Technique (DDT) is a series of debugger programs originally developed for Digital Equipment Corporation (DEC) hardware, initially known as DEC Debugging Tape because it was distributed on paper tape. The name is a pun on the insecticide DDT. The first version of DDT was developed at MIT for the PDP-1 computer in 1961, but newer versions on newer platforms continued to use the same name. After being ported to other vendor's platforms and changing media, the name was changed to the less DEC-centric version. Early versions of Digital Research's CP/M and CP/M-86 kept the DEC name DDT (and DDT-86 and DDT-68K) for their debugger, however, now meaning "Dynamic Debugging Tool". The CP/M DDT was later superseded by the (SID, ZSID, , and ) in DR DOS and GEM.
- Comment
- enDynamic Debugging Technique (DDT) is a series of debugger programs originally developed for Digital Equipment Corporation (DEC) hardware, initially known as DEC Debugging Tape because it was distributed on paper tape. The name is a pun on the insecticide DDT. The first version of DDT was developed at MIT for the PDP-1 computer in 1961, but newer versions on newer platforms continued to use the same name. After being ported to other vendor's platforms and changing media, the name was changed to the less DEC-centric version. Early versions of Digital Research's CP/M and CP/M-86 kept the DEC name DDT (and DDT-86 and DDT-68K) for their debugger, however, now meaning "Dynamic Debugging Tool". The CP/M DDT was later superseded by the (SID, ZSID, , and ) in DR DOS and GEM.
- Cs1Dates
- eny
- Date
- enJuly 2019
- Depiction
- Has abstract
- enDynamic Debugging Technique (DDT) is a series of debugger programs originally developed for Digital Equipment Corporation (DEC) hardware, initially known as DEC Debugging Tape because it was distributed on paper tape. The name is a pun on the insecticide DDT. The first version of DDT was developed at MIT for the PDP-1 computer in 1961, but newer versions on newer platforms continued to use the same name. After being ported to other vendor's platforms and changing media, the name was changed to the less DEC-centric version. Early versions of Digital Research's CP/M and CP/M-86 kept the DEC name DDT (and DDT-86 and DDT-68K) for their debugger, however, now meaning "Dynamic Debugging Tool". The CP/M DDT was later superseded by the (SID, ZSID, , and ) in DR DOS and GEM. In addition to its normal function as a debugger, DDT was also used as a top-level command shell for the Massachusetts Institute of Technology (MIT) Incompatible Timesharing System (ITS) operating system; on some more recent ITS systems, "PWORD"—which implements a restricted subset of DDT's functionality—is run first and is overlaid with DDT as soon as the user logs in. DDT could run and debug up to eight processes (called "jobs" on ITS) at a time, such as several sessions of TECO, and DDT could be run recursively - that is, some or all of those jobs could themselves be DDTs (which could then run another eight jobs, and so on). These eight jobs were all given unique names, and the usual name for the original and top-most DDT was "HACTRN" ("hack-tran"). Guy L. Steele wrote a filk poem parody of Edgar Allan Poe's "The Raven," entitled The HACTRN.
- Is primary topic of
- Dynamic debugging technique
- Label
- enDynamic debugging technique
- Link from a Wikipage to an external page
- web.mit.edu/afs/net/project/cgw/src/ddt.68/ddt.cmds
- web.archive.org/web/20061011004003/http:/www.sigfs.org/its-reference/its-reference-1.5.html%23tth_sEc0.4.1
- victor.se/bjorn/its/luser.php
- www.ultimate.com/phil/pdp10/quux.poem
- Link from a Wikipage to another Wikipage
- C (programming language)
- Category:Command shells
- Category:Debuggers
- Category:Digital Equipment Corporation
- Command line interpreter
- Comparison of computer shells
- DDT
- DEBUG (DOS command)
- Debugger
- DECsystem-10
- DECSYSTEM-20
- Digital Equipment Corporation
- Digital Research
- DR DOS
- Edgar Allan Poe
- File:Digital Research CP-M-86 for the IBM Personal Computer Version 1.0 720x400.png
- Filk
- GEMSID
- Graphics Environment Manager
- Guy L. Steele
- Incompatible Timesharing System
- M
- M
- M-86
- Massachusetts Institute of Technology
- MIT
- On-line Debugging Tool
- Operating system
- Paper tape
- PDP-1
- Process (computing)
- Recursively
- SID86
- Symbolic Instruction Debugger
- Text Editor and Corrector
- The Raven
- Tracing Debugging Technique
- SameAs
- 4imgQ
- Dynamic debugging technique
- m.01s8dc
- Q5318964
- Subject
- Category:Command shells
- Category:Debuggers
- Category:Digital Equipment Corporation
- M
- Thumbnail
- WasDerivedFrom
- Dynamic debugging technique?oldid=1070503617&ns=0
- WikiPageLength
- 8409
- Wikipage page ID
- 304070
- Wikipage revision ID
- 1070503617
- WikiPageUsesTemplate
- Template:Anchor
- Template:Digital Equipment Corporation
- Template:Digital Research
- Template:Fact
- Template:Reflist
- Template:Use dmy dates
- Template:Use list-defined references
