Date   : Thu, 07 Oct 1982 03:04:00-EDT
From   : Keith Petersen <W8SDZ@Mit-Mc>
Subject: Problem using DDT

Have you tried running the Lifeboat MEMR2 memory test?  It is a very
good memory test program.  Whenever I have unexplained problems with a
program that has previously worked, the first thing I do is run MEMR2.
Also, have you checked your DDT against 22CRCLST.DOC (my list of CRC's
for distribution versions of CP/M utilities)?