Save for one thread which mentions this problem, I could not find an answer to what is being seen on the screen while trying to program this machine. The R100 in question is in good working order having been gone through some time back by a used equipment dealer. The computer being used is a pure DOS machine running version 6.22 with a 25 Mhz clock. Yet, the above message is all that happens when the attmept is made to program. Regarding the thread that did cover the problem, the suggestion was to make sure you had a pure DOS machine which, of course, is being already covered here. Thanks in advance for any help.
