>My system is currently running 1.0A and am wondering if it would be 
>better to ftp the i386 src and make world or do a sup?

Forget it.  A nightmare would be fun compared to that.  If it's even
possible (which it very well might not be).

Save yourself the headache.  Just download the 1.2 binary
distribution.  Get the 1.2 sources.  Unpack the sources.  Unpack the
new binaries over your old ones.  Reboot with a 1.2 generic kernel.
Build your new kernel with 1.2 sources.  Reboot your new kernel.
You're done.

-----------------------------------------------------------------------------
  Michael L. VanLoon                           michaelv@MindBender.serv.net
        --<  Free your mind and your machine -- NetBSD free un*x  >--
    NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
        Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
    NetBSD ports in progress: PICA, others...
-----------------------------------------------------------------------------