Northstar DOS help

This is probably a pretty 'slim chance' request! But here goes, anyway. Does anyone know of a program similar in function to the CP/M utility DU (Disk Utility) that runs under the old Northstar DOS? And the hard part - where to get a copy? Alternatively, does anyone have N*DOS source code salted away somewhere? That would simplify the process of building such a program. Any hints or help will be greatly appreciated! - don donm(a)cts.com *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives Chairman, Dina-SIG of the San Diego Computer Society Clinging tenaciously to the trailing edge of technology. Sysop - Elephant's Graveyard (CP/M) - 619-454-8412 *--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--* see old system support at http://www.psyber.com/~tcj