Hallo Herr Eric Auer, am 27. Juni 2015 um 19:18 schrieben Sie:
> Hi Mateusz, >> After some investigations, I pin-pointed the problem to this: >> >> If I load any of these TSRs: LBACACHE, RDISK, then Doom either freezes >> at start, or make the computer reboot. > If I have to guess: RDISK, LBACACHE and DOOM may all cause > the A20 to toggle wrong. in normal circumstances A20 is always enabled. A20 is disabled when programs are started, and is disabled with the next INT21 interrupt (assuming the kernel is loaded high). and no program has any reason to disable it ever again. > as a side effect of doing protected mode > stuff (even if it is only accessing XMS) and USB emulation > of PS/2 and keyboard controllers, or injection of events > to the actual controllers, in BIOSes may have bad stability > as well. You could try other A20 methods or configure your > EMS and/or XMS drivers differently, maybe even towards A20 > being locked to the "modern" state. Or you could try some > other DOS extender than the one which is default for DOOM. > The latter can also help if things are generally less stable > due to issues with UMB, XMS 2 versus 3 or having large RAM > amounts in the first place. For example DOS32A as a modern > replacement of DOS4GW :-) > Cheers, Eric > PS: FreeCOM and kernel also affect A20 by using XMS swap > and the high memory area (HMA). wrong, too. > You can try a non-XMS-swap > version of FreeCOM and/or tell the kernel to use no HMA. Tom > ------------------------------------------------------------------------------ > Monitor 25 network devices or servers for free with OpManager! > OpManager is web-based network management software that monitors > network devices and physical & virtual servers, alerts via email & sms > for fault. Monitor 25 devices for free with no restriction. Download now > http://ad.doubleclick.net/ddm/clk/292181274;119417398;o > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user Mit freundlichen Grüßen/Kind regards Tom Ehlert +49-241-79886 ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
