2.3.1  Does TR1/UB work with Voodoo2?

         While there is no specific voodoo2 patch for TR1 the original
         3Dfx patch *should* work if you know how to tweak the Voodoo2
         card environment variable settings.

         The following is an excerpt from 3Dfx's tech support web page:

         >Voodoo Graphics/Voodoo2 transitional environment variables >
         >Older Voodoo Graphics-specific games based on Glide versions
         >2.1 or below are not officially supported to be able run on
         >Voodoo2. However, many of these games will run properly with
         >the following environment variables set: > >
         set SST_GRXCLK=90 >                     set SST_FT_CLK_DEL=0x4
         >                     set SST_TF0_CLK_DEL=0x6 >
         set SST_TF1_CLK_DEL=0x6 >                     set
         SST_VIN_CLKDEL=0x1 >                     set
         SST_VOUT_CLKDEL=0x0 >                     set SST_TMUMEM_SIZE=2

         Dracman's site (URL in section 5.1.3) contains a page showing
         the settings he uses to run TR1/UB - and includes nifty batch
         files with which to run TR1 using these settings. His settings
         also address the 'purple Lara' syndrome.