This is Operating System-dependent:
On Solaris, 32-bit LispWorks is mapped at
#x10000000
. In principle it can grow to almost
#x80000000
(the libraries are at higher addresses).
On HP-UX, 32-bit LispWorks is mapped at
#x50000000
, because it cannot use the first quadrant. The libraries are also mapped at the same quadrant, at around
#x7a000000
, so the total size can be a little more than 0.5GB.
For the other platforms and for 64-bit LispWorks, see the discussion in Startup relocation.