On Thu, 17 Nov 2005 20:07:37 -0500 "Jonathan S. Shapiro" <[EMAIL PROTECTED]> wrote:
This is a good question, If I need to say what kind of computers we need to support TODAY, I think that still important the support of i486 and i586. I do not know where do you live, but they are very used here, in Brazil. But if you think that this project will support computers of 2015 (I think that I am very optmist), I beleave that support to i586 is needed. > I'm currently settling the cross-build tools for Coyotos, and I'ld like > some input on something. > > In EROS, I decided early *not* to support the i386. EROS required i486 > or better. This is because the i386 does not honor the write-protect bit > in supervisor mode, and we need this for efficiency in the IPC > implementation. > > Given that it is now 2005, does anybody see a need today to support > processors earlier than i686 in desktop PCs? > > The specific features I am looking for are the "page size > extensions" (4M pages) and the per-page global bit. I *think* that both > of these were actually present in the appendix H extensions for the > Pentium, but I'm not certain about PSE. I have appendix H in a box > somewhere, but I'm damned if I can locate it at the moment. > > I am aware that embedded processors like Geode don't all do PSE. We need > to support those, but the question I'm trying to ask right now has to do > with the minimum level of PC motherboard that the Hurd group wants to > support. > > shap > > > > _______________________________________________ > L4-hurd mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/l4-hurd -- leonardolopespereira at gmail.com GNU Privacy Guard (GPG) ID da chave: 83E8AFBF | servidor: keys.indymedia.org gpg --keyserver keys.indymedia.org --recv-keys 83E8AFBF _______________________________________________ L4-hurd mailing list [email protected] http://lists.gnu.org/mailman/listinfo/l4-hurd
