To give something back to the community, i have delved into 'cpmtools' (LIBDISK). The original Win32 distribution was incredibly hard to use. List, verify, empty, extract (or populate) CP/M images for VT180 and Rainbow-100 (*.img / *.td0). https://dl.dropboxusercontent.com/u/37819653/CPMTOOLS_FOR_VT180_and_Rainbow100.7zComes with updated DISKDEFS. Win-32. GPL.
@R.Belmont: the "Design Maturity Test" disk contains 2 programs that could be interesting (disk boots, as does DIAG) -
CDVT CMD : PC100-B COMM DIAGNOSTIC REV 1.0 June 17 1983
XDVT CMD : Communications Diagnostic Rev 3.0 June 10 1983
Thank you very much for your patience and commitment.