http://bugs.winehq.org/show_bug.cgi?id=30849
--- Comment #55 from Erich Hoover ehoover@mines.edu 2012-06-07 11:47:12 CDT --- Created attachment 40429 --> http://bugs.winehq.org/attachment.cgi?id=40429 address space limit tweak
(In reply to comment #52)
I'd expect it would also get 4Gb of address space on 64-bit Windows, so there must be something else going on here. Are you using a 32-bit or 64-bit wine prefix?
The attached is likely completely bogus, but it works and it might give you an idea about what's going on.