Digital Diagnostic Diskettes

Some time back, somebody was mentioning that they had some of the DDD's that they wree taking to the VCF. I'm afraid to go to those things for fear of what I might bring home, and I'm not talking aboug bugs this time ... Has anyone got code that uses these things under CP/M? I've just this evening found a listing, albeit rather low-quality, of some code written by DYSAN and I'd rather not type it in if somebody has an already working version. It's called DDD.ASM and is written for a 1793. It should be possible to write a program to attempt to read sectors without making direct BIOS calls. The only problem, of course, is that there's many a slip ... Please let me know whether you've got such a thing, and how it works for you. Dick