Hi Robert, > > You tell JEMM to use the e000-efff memory space, and you may run into > > troubles if there is some hardware mapped at those addresses. Just try > > and see. > > MS-DOS related, but it might help: > http://blogs.msdn.com/virtual_pc_guy/archive/2004/10/21/246136.aspx > http://blogs.msdn.com/virtual_pc_guy/archive/2005/02/07/368800.aspx
You should have mentioned something about the context instead of only throwing URLs at us ;-). The first URL talks about making more low RAM free by loading things high into UMB and by using fewer drivers. The second URL talks about DR DOS. One thing that might be useful for FreeDOS and JEMM is the EMM386 hint in the first: It says you might be able to use: EMM386 ... I=B100-B7FF I=C600-C7FF I=CC00-CFFF I=e600-efff In other words, the Virtual PC VGA BIOS is only 24k, some area at c800-cbff is in use, some area at e000-e5ff is in use, and the mono text mode buffer can be partially used for UMBs (b100-b7ff). Unfortunately it does not tell which things are in the way at e000-e5ff and c800-cbff, do you know more about that? Eric ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
