bridger%rcc@RAND-UNIX.ARPA (12/13/87)
Mike, My face is (seasonally?) red. The generic DU does, indeed, check for CP/M 3 and use BDOS function 50. I have been testing with "DU3", a Rick Conn variant of DU that has only CP/M 2.2 capability. CP/M 3 users should use generic DU. When ZCPR33 is released for CP/M 3, DU3 users will be able to run that version under an RSX. --bridger