And what modern *nix ports, if any, do other list
members use on
 their classic iron? 
 I ran it on my VS3100, Alpha PC64-275, various MIPS & ARM
gear,
 Sun 3 & SS20, MVME 680[346]0, VME PPC, and Xen & x86 (not
 classic).  I still have 1.5 on a PC532 and run current on Xen &
 x86, having gotten rid of everything else (well...the VME stuff is
 in storage pending a decision on keeping it).