Many thanks for your replies!
Oh well, gave up and bought the drive anyway. Much to my exuberation
it appears to be a mmc-compliant drive or at least is recognized as such.
Docs say RedHat 5.2 or later is compatible out of the box, but using X-CDRoast
0.96e on my old "alternative" libc5 sys. took a Tcl/Tk re-compile and works to date
..or shall I bring it back where I bought it.
Greatful for answer.