Let's compromise and just call it "variable
density". Then it doesn't
matter how we got there.
I think that depends on how you defien density :-)
Certainly the number of bits per track varies on different tracks.
But the number of bits per mm (or inch or whatever) along the track is a
lot more cosntant for a Sirius disk (it does still vary, there would
ahve to be 40 differnet pseeds if that were not the case), than on a
standard floppy diask turnign at constat speed with a cosntant data rate.
Shall we just agree it's strange, like so much of the Sirius (I mean,
using 6522s in an 8088 system, and having a Cntronics printer port that
is GPIB in disguise...)
-tony