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1980-01-01
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52 lines
Notes on DDTZ25.DOC
===================
Having downloaded DDTZ.LBR from my local RCPM BBS, I've greatly enjoyed
working with it over the past several months. It's taught me a great deal
about elementary debugging, assembler practice, and mental switching between
8080 and Z80 mnemonics. Furthermore, I particularly admire someone's fully
successful efforts at upgrading and improving any of the basic Digital Research
utilities included with most CP/M 2.2 installations; these tools should be
among the most well-worn in any CP/M'er's toolbox. DDT (for Dynamic Debugging
Tool) has an undeserved reputation for being obscure and difficult to use, but
it certainly has its annoying shortcomings and quirky syntax. I'd say DDTZ
pretty well fixes all that, as well as providing a much-expanded usefulness
with extra functions and impressive capabilities. All in all, it well deserves
some wider recognition and application, and so I'm pleased to serve it up in
this "new, improved" package.
Actually, all I've added here to the basic library of .COM and .DOC files
is a thoroughgoing editing of the original documentation, which I found to be
too sketchy, as if hastily flung together--more like rough notes than a full-
blown "user's guide." I've taken the time and attention to reorganize, polish,
and amplify the author's technical prose, and I'm finally satisfied enough with
the results as to reassemble the library and reissue it to the public domain.
The only fly in the ointment is that I've been unable to contact the author
through BBS channels for approval of my efforts. Thus, I may possibly have
misunderstood him on a few points, although I don't think so--most of my
rewriting is on the basis of hours of actual application of his delightful
little program to my various debugging projects, as well as careful checking of
its each and every feature.
In any case, "do it yourself" is the name of the game in the public
domain, but I've not tampered with the object code (except to capitalize "NEXT
PC SAVE" on the file report!), so his essential work remains intact until the
next update emanating from him, whenever that may be. If my modest overhaul to
his explanatory text serves only to attract more CP/M users to this utility, I
shall be more than satisfied for my small contribution.
George A. Havach
San Francisco, Calif.
(415) 282-3056
August 31, 1986
ore than satisfied for my small contribution.
George A. Havach
San Francisco, Calif.
(415) 282-3056
Aug