🚀 go-pugleaf

le...@bbn.com (Joel B Levin) writes:

}In article <58...@rtech.Ingres.COM> reb@squid.UUCP (Phydeaux) writes:
}|In article <1990Sep2...@axion.bt.co.uk> PK...@axion.bt.co.uk writes:
}|>	... and wasn't the debugger on TOP-20 called `ddt' !!
}|
}|DDT - Dynamic Debugging Tool
}|
}|I seem to recall this from CP/M or HDOS (the Heath Disk Operating System),
}|I think there was one in Tops-20 too ;-) ;-) ;-)

}A knowledgeable answer has already been given (Hi, Fred!) -- Digital
}Debugging Tape appeared in about 1965 for the PDP-5 (and -8),
}successor to the more simple minded ODT (Octal Debugging Tape).  So
}ddt is nearly thirty years old.

Indeed.  Fred was quite right: DDT was developed by the hackers at the RLE
lab at MIT on their PDP-1.  By 1965 it was (relatively) old stuff: 
1961 on the PDP-1 is a closer estimate.

  /Bernie\