On Tuesday 08 January 2008 18:24:02 David P. Reed wrote: > Windows these days does delays with timing loops or the scheduler. It > doesn't use a "port". Also, Windows XP only supports machines that tend > not to have timing problems that use delays. Instead, if a device takes > a while to respond, it has a "busy bit" in some port or memory slot that > can be tested.
Windows XP can run on a machine with ISA slot(s) and has built-in drivers for some plug&play ISA cards - e.g. the famous 3Com EtherLink III. I think that there's a driver for NE2000-compatible cards too and it probably works. > Almost all of the issues in Linux where _p operations are used are (or > should be) historical - IMO. > > Ondrej Zary wrote: > > On Tuesday 08 January 2008 02:38:15 David P. Reed wrote: > >> H. Peter Anvin wrote: > >>> And shoot the designer of this particular microcontroller firmware. > >> > >> Well, some days I want to shoot the "designer" of the entire Wintel > >> architecture... it's not exactly "designed" by anybody of course, and > >> today it's created largely by a collection of Taiwanese and Chinese ODM > >> firms, coupled with Microsoft WinHEC and Intel folks. At least they > >> follow the rules and their ACPI and BIOS code say that they are using > >> port 80 very clearly if you use PnP and ACPI properly. And in the old > >> days, you were "supposed" to use the system BIOS to talk to things like > >> the PIT that had timing issues, not write your own code. > > > > Does anyone know what port does Windows use? I'm pretty sure that it > > isn't 80h as I run Windows 98 often with port 80h debug card inserted. > > The last POST code set by BIOS usually remains on the display and only > > changes when BIOS does something like suspend/resume. IIRC, there was a > > program that was able to display temperature from onboard sensors on the > > port 80h display that's integrated on some mainboards. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Ondrej Zary -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
