Any better interactive debuggers than Dbxtool?

[Gary L Dare]

I'm using dbxtool to debug a program, but with long calculations occuring
between calls to the routine I'm trying to fix I'm either tapping my five
fingers, reading Rec.sport.hockey or filing my US Census report.  Are any
alternatives available that will execute the program under scrutiny any
faster?

Gary L. Dare				Winnipeg Jets:
gld at cunixD.cc.columbia.EDU		 Miracle on Ice,
gld at cunixc.BITNET			 Stanley Cup 1990?