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-
-
-
-The dosemu HOWTO
-
-
-
-----
-
-!!!The dosemu HOWTO
-
-!!by Mike Deisher.
-
-Updated by Uwe Bonnes for dosemu-.64.4, 15 March 1997
-
-
-Updated by David Hodges,
-__
-davidhodges@altavista.net__
-For dosemu-.98.8, 24 April 1999
-
-
-
-
-
-----
-''This is the `Frequently Asked Questions' (FAQ) / HOWTO document for
-dosemu. The most up-to-date version of the dosemu-HOWTO may be found
-at __
-http://www.dosemu.org__.''
-----
-
-
-
-
-
-
-
-
-
-
-!!1. The preliminaries
-
-
-*1.1 What is dosemu, anyway?
-
-*1.2 What operating systems does dosemu work under ?
-
-*1.3 What processors does dosemu work on ?
-
-*1.4 What if I have an Alpha/Sparc/Motorola/other non-Intel CPU ?
-
-*1.5 Do I need MS-DOS to use dosemu ?
-
-*1.6 Can I run Microsoft Windows programs under dosemu ?
-
-*1.7 I want to run something that won't run under DOSemu or Wine
-
-*1.8 Names and numbers
-
-*1.9 What version of Dosemu should I use?
-
-*1.10 What's the newest version of dosemu and where can I get it?
-
-*1.11 Where can I ask questions?
-
-*1.12 Where can I report bugs and ask questions?
-
-*1.13 What documentation is available for dosemu?
-
-*1.14 I have a program that fails, not listed in EMUfailure.txt
-
-*1.15 How do I submit changes or additions to the HOWTO?
-
-*1.16 Message from Greg...
-
-
-
-
-
-!!2. Compiling and installing dosemu
-
-
-*2.1 Where are the installation instructions?
-
-*2.2 Top ten problems while compiling and installing dosemu.
-
-*2.3 How do I make aout binaries?
-
-*2.4 How do I compile dosemu on a machine with low memory?
-
-*2.5 Compilation fails with some strange error regarding "slang"
-
-*2.6 What configurable options are available ?
-
-*2.7 Do I need to run dosemu as root?
-
-*2.8 How do I patch dosemu ?
-
-*2.9 What versions of DOS are known to run with dosemu ?
-
-
-
-
-
-!!3. Hard disk setup
-
-
-*3.1 How do I use my hard disk with dosemu?
-
-*3.2 How can I access the hdimage from Linux?
-
-*3.3 Can I use my stacked/double-spaced/super-stored disk?
-
-*3.4 Creating your own hdimage file.
-
-
-
-
-
-!!4. Parallel ports, serial ports and mice
-
-
-*4.1 Port access worked with older version, but doesn't work now!
-
-*4.2 Port access was faster with older versions!
-
-*4.3 Where are the (microsoft compatible) mouse drivers?
-
-*4.4 Why doesn't the mouse driver work?
-
-*4.5 Why does dosemu clobber COM4?
-
-*4.6 How do I use dosemu over the serial ports?
-
-*4.7 How can I switch between dosemu and a shell over the serial line?
-
-*4.8 How can I get the parallel ports to work?
-
-
-
-
-
-!!5. Multiple users and Non-interactive sessions
-
-
-*5.1 Can I use dosemu on a multi-user system?
-
-*5.2 How can I run dos commands non-interactively?
-
-
-
-
-
-!!6. dosemu and Netware
-
-
-*6.1 How do I get Netware access from dosemu?
-
-
-
-
-
-!!7. dosemu and X-windows(97/2/9).
-
-
-*7.1 Can I run dosemu in console mode while running X?
-
-*7.2 Is it possible to run dosemu in a window in X-windows?
-
-*7.3 Xdos dosen't work on a remote X-display!
-
-*7.4 Xdos dosen't find the VGA font
-
-*7.5 The vga font is very small on my high resolution display
-
-*7.6 Dosemu compilation fails with some strange error regarding X!
-
-*7.7 Does ansi emulation work properly?
-
-
-
-
-
-!!8. dosemu and MS-Windows 3.1
-
-
-*8.1 Is it possible to run MS-Windows 3.1 under dosemu?
-
-*8.2 Can I run 32bit stuff with winemu
-
-*8.3 Errormessage: Cannot find the vdtapi.386 file when starting dosemu
-
-*8.4 Windows 3.x in xdos:
-
-*8.5 Can I install windows from within dosemu?
-
-*8.6 Notes for the mouse under win31-in-xdos:
-
-*8.7 Why did my Icon disappear from the Program manager?
-
-
-
-
-
-!!9. Video and sound
-
-
-*9.1 Can I run 32-bit video games under dosemu?
-
-*9.2 Exiting from dosemu gives me a screen full of garbage.
-
-*9.3 Why doesn't my soundcard software work with dosemu?
-
-
-
-
-
-!!10. Games
-
-
-*10.1 Duke3d dosen't work
-
-
-
-
-
-!!11. Problems and fixes
-
-
-*11.1 Security issues
-
-*11.2 dosemu says "ERROR: general protection" and terminates when I run some program
-
-*11.3 Dosemu dies when booting. I have Win95 installed.
-
-*11.4 Dosemu hangs! How can I kill it?
-
-*11.5 Dosemu crashed and now I can't type anything.
-
-*11.6 I've enabled EMS memory in dosemu.conf but it does not help.
-
-*11.7 How do I get rid of all those annoying "disk change" messages?
-
-*11.8 Why won't dosemu run a second time after exiting in console mode?
-
-*11.9 Why will dosemu run in a term but not in the console?
-
-*11.10 How can I speed up dosemu?
-
-*11.11 My CDROM drive has problems reading some files under dosemu.
-
-*11.12 How do I see debugging output?
-
-*11.13 Why are my keystrokes echoed ttwwiiccee??
-
-*11.14 Dosemu scrambles my screen?
-
-*11.15 MS !FoxPro 2.6 won't run
-
-
-
-
-
-!!12. Contributing to the dosemu project
-
-
-*12.1 Who is responsible for dosemu?
-
-*12.2 I want to help. Who should I contact?
-
-----
-
-!!1. The preliminaries
-
-!!1.1 What is dosemu, anyway?
-
-
-
-To quote the manual, "dosemu" is a user-level program which uses
-certain special features of the Linux kernel and the 80386 processor
-to run MS-DOS/FreeDOS/DR-DOS in what we in the biz call a `DOS box.'
-The DOS box, a combination of hardware and software trickery, has these
-capabilities:
-
-
-o the ability to virtualize all input/output and processor control
-instructions
-
-
-o the ability to support the word size and addressing modes of the
-iAPX86 processor family's "real mode," while still running within
-the full protected mode environment
-
-
-o the ability to trap all DOS and BIOS system calls and emulate such
-calls as are necessary for proper operation and good performance
-
-
-o the ability to simulate a hardware environment over which DOS
-programs are accustomed to having control.
-
-
-o the ability to provide DOS services through native Linux
-services; for example, dosemu can provide a virtual hard disk
-drive which is actually a Linux directory hierarchy."
-
-
-
-
-!!1.2 What operating systems does dosemu work under ?
-
-
-
-Dosemu is primarily written for Linux. It also works on NetBSD and
-possibly FreeBSD, however the graphics emulation is unlikely to work
-on NetBSD, which means that all DOS programs that use graphics mode
-(most DOS programs) will not work under NetBSD.
-
-
-
-
-!!1.3 What processors does dosemu work on ?
-
-
-
-Dosemu only works on Intel 80x86 processors, e.g. 80386, 80486,
-Pentium etc.
-
-
-
-
-!!1.4 What if I have an Alpha/Sparc/Motorola/other non-Intel CPU ?
-
-
-
-Dosemu only works on Intel 80x86 processors but there are alternatives:
-Bochs (__
-http://www.bochs.com__) is an open
-source shareware PC emulator that
-runs on most Unixes (as well as MS-Windows), and there are other
-(non-free) alternatives - see the comp.emulators.misc FAQ, available via
-usenet or __
-ftp://rtfm.mit.edu/pub/usenet-by-hierarchy/comp/emulators/misc/__
-
-
-
-
-!!1.5 Do I need MS-DOS to use dosemu ?
-
-
-
-No. You need some version of DOS but not necessarily MS-DOS.
-See the section "What versions of DOS are known to run with dosemu ?"
-
-
-
-
-!!1.6 Can I run Microsoft Windows programs under dosemu ?
-
-
-
-Not reliably. You would be better to use the Windows emulator
-Wine (__
-http://www.winehq.com__). If you insist on running Windows
-under dosemu, see section 8 - dosemu and MS-Windows 3.1.
-
-
-
-
-!!1.7 I want to run something that won't run under DOSemu or Wine
-
-
-
-See section 1.4.
-
-!!1.8 Names and numbers
-
-
-
-
-
-(xx/yy/zz) means day zz in month yy in year xx.
-
-
-winemu mean WinOS/2 running in dosemu.
-
-
-
-
-
-!!1.9 What version of Dosemu should I use?
-
-
-
-Dosemu uses the same numbering scheme as the kernel. Uneven second
-numbers are for possible unstable developer releases, even second numbers
-are for releases considered stable. At the time of writing, __.98.8__
-is the latest stable release, while __.99.10__ is the latest
-developer's release. So if you want to use dosemu, get the latest
-__stable__ release.
-
-
-
-
-!!1.10 What's the newest version of dosemu and where can I get it?
-
-
-
-The newest version of dosemu as of 99/04/09 is
-__dosemu0.98.8__ and can be ftp'ed from:
-
-ftp://ftp.dosemu.org/pub/dosemu/
-
-
-Remember that this is ALPHA code, however: there may be serious bugs
-and very little documentation for new features. The development version
-is particularly likely to have bugs. Please use it only if you
-like to do active development. Don't report bugs in the development
-version, fix them instead.
-
-
-
-
-!!1.11 Where can I ask questions?
-
-
-
-If you have problems regarding installing and running dosemu after
-reading the documentation, first try to help yourself: Your question
-has probably been asked and perhaps answered before. Try some search
-engine on the internet to retrieve that information. E.g. you can ask
-
-http://www.dejanews.com
-
-
-to find all newsnet articles containing the keywords of your
-question. Helping yourself will probably be faster than asking a well
-known question. It also frees up the time of developers from answering
-trivial question and so helps the further development of dosemu.
-
-
-
-
-!!1.12 Where can I report bugs and ask questions?
-
-
-
-If you want to ask questions and report bugs regarding dosemu, you
-should consider subscribing to the linux-msdos mailing list.
-To subscribe, send mail to __
-Majordomo@vger.rutgers.edu__
-with the following command in the body of your email message:
-
-subscribe linux-msdos your_username@your.email.address
-
-If you ever want to remove yourself from the mailing list, you can
-send mail to __
-Majordomo@vger.rutgers.edu__
-with the following command in the body of your email message:
-
-unsubscribe linux-msdos your_username@your.email.address
-
-(95/8/11). When you are subscribed to linux-msdos, you can send your
-report as mail to linux-msdos@vger.rutgers.edu. There is a gate that
-send mails to linux-msdos@vger.rutgers.edu as postings to the
-newsgroup named __linux.dev.msdos__. If your News provider
-doesn't carry that group, ask her(him) to add that group.
-Before you ask a question, you should carefully read all of the
-documentation, including this HOWTO and check one of the mailing list
-archives listed at __
-http://www.dosemu.org/mailinglist.html__ to see whether your
-question has already been asked and answered.
-
-
-
-
-!!1.13 What documentation is available for dosemu?
-
-
-
-Dosemu comes with documentation. The main documentation files
-README.txt and README-tech.txt cover virtually all aspects of dosemu
-and may be more up-to-date than this HOWTO.
-
-
-The "dosemu Novice's Altering Guide" or DANG is a road map to the
-inner workings of dosemu. It is designed for the adventurous, those
-who wish to modify the source code themselves. The DANG is maintained
-by Alistair !MacDonald (__
-alistair@slitesys.demon.co.uk__) and is
-found in the doc directory of the dosemu source tree.
-
-
-
-
-
-The EMU failure list (EMUfailure.txt) is a partial list of programs known
-__not__ to work under dosemu.
-
-
-
-
-
-And then, of course, there is the dosemu FAQ/HOWTO. But you already
-know about that, don't you. It is also posted once in a while to the
-mailing list and found in the doc-directory. The most recent version
-can be found at __
-http://www.dosemu.org__.
-
-
-
-
-!!1.14 I have a program that fails, not listed in EMUfailure.txt
-
-
-
-First check, if the failure of your program is not caused by some
-of the fundamental incapabilities of dosemu, listed in EMUfailure.txt. If
-you think you have something new, please report to
-linux-msdos@vger.rutgers.edu.
-Perhaps it can be made going with the help others. Give detailed
-information about your setup, tell the version of kernel, dosemu etc
-and name the observed errors. You can use xdos to cut and paste the
-error message into your report. But keep your report in a readable
-form. We know the content of ../etc/config.dist. So only send the
-active lines from your dosemu.conf. Try running dosemu with some or all
-debug output turned on and scan through your debug output
-and at first only send those parts you think are relevant. Few people
-are willing to decode some long attachment to a mail, to do debugging
-for others. But keep your logs at hand, in case others ask detailed
-questions.
-
-
-
-
-
-
-
-!!1.15 How do I submit changes or additions to the HOWTO?
-
-
-
-The preferred method is to edit the file
-__dosemu-HOWTO-xx.x.sgml__ to incorporate the changes, create a
-diff file by typing something like
-
-
-
-
-diff -uw original-file new-file
-
-
-
-and send it to __
-davidhodges@altavista.net__.
-If you do not know SGML, that's ok. Changes or new information in any
-form will be accepted. Creating the diff file just makes it easier on
-the HOWTO maintainer. :-)
-
-
-
-
-
-
-
-!!1.16 Message from Greg...
-
-
-
-Unless otherwise stated, Linux HOWTO documents are copyrighted by
-their respective authors. Linux HOWTO documents may be reproduced and
-distributed in whole or in part, in any medium physical or electronic,
-as long as this copyright notice is retained on all copies. Commercial
-redistribution is allowed and encouraged; however, the author would
-like to be notified of any such distributions.
-
-
-All translations, derivative works, or aggregate works incorporating
-any Linux HOWTO documents must be covered under this copyright notice.
-That is, you may not produce a derivative work from a HOWTO and impose
-additional restrictions on its distribution. Exceptions to these rules
-may be granted under certain conditions; please contact the Linux HOWTO
-coordinator at the address given below.
-
-
-In short, we wish to promote dissemination of this information through as
-many channels as possible. However, we do wish to retain copyright on the
-HOWTO documents, and would like to be notified of any plans to redistribute
-the HOWTOs.
-
-
-If you have questions, please contact Greg Hankins, the Linux HOWTO
-coordinator, at gregh@cc.gatech.edu(95/8/11).
-
-
-
-----
-
-!!2. Compiling and installing dosemu
-
-!!2.1 Where are the installation instructions?
-
-
-
-The installation instructions are in the file, "!QuickStart",
-included in the distribution.
-
-
-
-
-!!2.2 Top ten problems while compiling and installing dosemu.
-
-
-
-
-
-
-1. Forgetting to read the __!QuickStart__ Guide.
-
-
-2. Try to compile some old version of dosemu.
-
-
-3. Try to compile with a kernel older than 2..28 or 2.1.15.
-
-
-4. Having the wrong linux kernel source sitting in __/usr/src/linux__
-or missing __/usr/src/linux/include/version.h__
-
-
-5. Use dosemu with a kernel that does not have __IPC__ compiled in.
-
-
-6. Compile with gcc older than 2.7.2 or libc older than 5.x.x.
-
-
-7. Forget to edit your __/etc/dosemu.conf__, __/etc/dosemu.users__
-and __/var/lib/dosemu/global.conf__ files
-
-
-8. Run DOSEMU with partition access while they are already mounted.
-
-
-9. Don't install dosemu with sufficient privileges (i.e., root).
-
-
-10. Try to run programs that use DPMI without enabling dpmi in
-/etc/dosemu.conf
-
-
-
-
-!!2.3 How do I make aout binaries?
-
-
-
- Starting with version .64.4 there is no a.out support any more.
-If you absolutely need it, you must use version .64.3.1.
-The configure script then should take care for this, if you setup is a
-standard setup.
-
-
-
-
-!!2.4 How do I compile dosemu on a machine with low memory?
-
-
-
-Marty Leisner (__leisner@sdsp.mc.xerox.com__) reported (95/4/8)
-that
-
-
-If you have problems with running out of swap space you may want to
-add CFLAGS+=-fno-inline after CFLAGS is defined in
-__dpmi/Makefile__. Be careful before you do this and check for
-the existence of swap space. I found Linux crashes at times when it
-has no swap space.
-
-
-
-
-!!2.5 Compilation fails with some strange error regarding "slang"
-
-
-
-You probably have
-
-slangforce off
-
-in your compiletime-settings file. You need to change it to
-
-slangforce on
-
-and recompile.
-
-
-
-
-!!2.6 What configurable options are available ?
-
-
-
-The compiletime-settings.help file describes the options you can change
-at compile time. The README.txt file describes the options you can
-change at run time.
-
-
-
-
-!!2.7 Do I need to run dosemu as root?
-
-
-
-No. Although dosemu drops root privilege wherever possible, it is still
-safer to not run dosemu as root, especially if you run DPMI
-programs under dosemu. Most normal DOS applications don't need dosemu
-to run as root, especially if you run dosemu under X.
-Thus you should not allow users to run a suid root copy of dosemu,
-wherever possible, but only a non-suid copy. You can configure this on
-a per-user basis using the /etc/dosemu.users file.
-
-
-Programs that require direct access to hardware ports (e.g. if the
-program needs to talk to some unusual hardware that is not supported
-by Linux and dosemu) require dosemu to run as root but printers,
-serial ports, mice and video cards (and to a small extent sound -
-hopefully more soon) are emulated by dosemu so you don't need direct
-hardware access and don't need to run as root to use these.
-
-
-
-
-!!2.8 How do I patch dosemu ?
-
-
-
-If you do patch dosemu from one version to another, do
-"make pristine;./configure; make".
-If you don't make pristine, at least the version
-of the new executable will be wrong, if the whole thing compiles at
-all(97/2/9).
-
-
-
-
-
-
-
-!!2.9 What versions of DOS are known to run with dosemu ?
-
-
-
-All versions of DOS should work with dosemu, with the following caveats:
-
-
-FreeDOS (__
-http://www.freedos.org__) does not
-(yet) have a working redirector so you will
-not be able to access your Linux filesystem or Novell networking under
-FreeDOS. Note also that FreeDOS is unreliable beta software and may
-crash unexpectedly, trash its filesystem, etc. etc.
-
-
-
-
-
-DOS 4.01 had problems by itself, so it won't work reliably with dosemu
-either.
-
-
-
-
-
-With __!MsDos-7__ aka __Win95__ you must not start the graphic shell
-at bootup. If you make the hdimage bootable with the so called "Rescue Disk"
-you are offered to make during the Windows installation, you get the right
-settings. If you use your normal Win95 installation to transfer the system
-files, have a look at the msdos.sys written on the hdimage and change the
-settings under the section
[[Options
] to have entries like
-[[Options]
-Logo=
-BootGUI=
-
-
-
-----
-
-!!3. Hard disk setup
-
-!!3.1 How do I use my hard disk with dosemu?
-
-
-
-First, mount your dos hard disk partition as a Linux subdirectory.
-For example, you could create a directory in Linux such as /dos (mkdir
--m 755 /dos) and add a line like
-
-/dev/hda1 /dos msdos umask=022
-
-to your /etc/fstab. (In this example, the partition is mounted
-read-only. You may want to mount it read/write by replacing "022"
-with "000" and using the -m 777 option with mkdir). Now __mount
-/dos__.
-The README.txt says:
-
-you just can have a Linux directory containing all what you
-want to have under your DOS C:. Copy your IO.SYS, MSDOS.SYS or what
-ever to that directory (e.g. /var/lib/dosemu/bootdir), put
-$_hdimage = "bootdir"
-into your /etc/dosemu.conf, and up it goes. DOSEMU makes a lredir'ed
-drive out of it and can boot from it. You can edit the config.sys and
-the autoexec.bat within this directory before you start dosemu. Fur-
-ther more, you may have a more sohisticated setup. Given you want to
-run the same DOS drive as you normal have when booting into native
-DOS, then you just mount you DOS partition under Linux (say to /dos)
-and put links to its subdirectories into the boot dir. This way you
-can decide which files/directories have to be visible under DOSEMU and
-which have to be different. Here's a small and incomplete example
-bootdir setup:
-config.sys
-autoexec.bat
-command.com -> /dos/command.com
-io.sys -> /dos/io.sys
-msdos.sys -> /dos/msdos.sys
-dos -> /dos/dos
-bc -> /dos/bc
-windows -> /dos/windows
-There is, however, one drawback, you can't use the DosC kernel
-(!FreeDos) for it, because it hasn't yet a working redirector (will
-hopefully be available some time in the future).
-
-
-
-
-
-!!3.2 How can I access the hdimage from Linux?
-
-
-
-Use mtools. With a line in __/etc/mtools.conf__ like
-
-drive n: file="/var/lib/dosemu/hdimage" MTOOLS_SKIP_CHECK=1 \
-MTOOLS_LOWER_CASE=1 MTOOLS_NO_VFAT=1 partition=1 offset=128
-
-you can use the mtools on the hdimage, like "mdir n:". "mcopy
-n:/config.emu /tmp" copies the config.emu file from the hdimage to
-/tmp/config.emu. You can edit it there and copy it back. Use a drive
-letter you find sensible. "N:" is only an example.
-
-
-
-
-!!3.3 Can I use my stacked/double-spaced/super-stored disk?
-
-
-
-At this time, compressed drives cannot be accessed via the
-redirector (lredir or emufs) on a standard kernel. There is a patch
-for the kernel to mount compressed files under the name "dmsdosfs".
-Find it on sunsite.unc.edu and its mirrors
-
-http://sunsite.unc.edu:/pub/Linux/system/filesystems/dosfs/
-A good idea is also to look in
-http://sunsite.unc.edu:/pub/Linux/Incoming for
-a newer version.
-The "wholedisk" option in older versions of dosemu is no longer
-allowed in recent versions, however, a line like
-
-$_hdimage = "/dev/hda1"
-
-may work, at the risk that you could lose all data in that partition
-on a dosemu crash.
-
-
-If your dos partition is already mounted with write access and you try
-to run dosemu with partition access, dosemu will print a
-warning message and abort. This prevents DOS and Linux from making
-independent writes to your disk and trashing the data on your dos
-partition(95/8/11).
-
-
----------------------
-
-
-If LILO is installed, the above will not work. However...
-
-
-Thomas Mockridge (__thomas@aztec.co.za__) reported (94/8/5) that
-
-
-To boot dosemu with LILO and Stacker 4.0 I did a little work around...
-
-
-1. __dd__ the MBR to a file. (or norton utility, etc., first 512 bytes)
-
-
-2. Boot dos (from full boot not emu), do a fdisk /mbr, make your dos
-partition active with (dos) fdisk.
-
-
-3. Copy the new MBR to a file.
-
-
-4. Replace the original MBR
-
-
-5. Copy the second MBR to /var/lib/dosemu/partition.hda? (Whichever is
-your dos partition)
-
-
-6. Set dosemu.conf
-
-disk {partition "/dev/hda? ?"}
-
-
-
-7. Start dosemu and and voila! No LILO.
-
-
-For recent versions of dosemu you need to change the
-
-disk {partition "/dev/hda? ?"}
-
-line to something like
-
-$_hdimage = "/dev/hda1"
-
----------------------
-
-
-Holger Schemel (__q99492@pbhrzx.uni-paderborn.de__) reported
-(94/2/10) that
-
-
-Works even fine under dosemu with MS-DOS 6.. If you have problems, then
-you have to edit the file 'DBLSPACE.INI' manually and change the disk
-letter to the letter your drive gets under dosemu.
-
-
----------------------
-
-
-Darren J Moffat (__moffatd@dcs.gla.ac.uk__) also reported
-(94/3/27)
-
-
-"...use 6.2 if you can get it!! Just make sure you have a
-LILO boot disk on hand since dos 6{.2} will change the MBR of the boot
-HZ."
-
-
-
-
-!!3.4 Creating your own hdimage file.
-
-
-
-The easy way is to use mkdexe - see README.txt for details.
-The old-fashioned way (I don't know why anyone would want to do
-it that way any more but
here it is, just in case) is as follows:
-
-
-There is an extra util program called mkfatimage16 which
-allows for creating a hdimage file headers. The full information is in the
-manpage (man/mkfatimage16.1) included in your distribution.
-
-
-To create a hard disk image file with a geometry corresponding to that of a
-real hard disk of 32 megabytes run:
-
-mkfatimage16 -k 32768 > hdimage
-
-
-
-This is probably too large for most needs; if you need this much
-space, consider using the disk redirector."
-
-
-Usually it is a good idea to format the drive after it.
-
-
-
-----
-
-!!4. Parallel ports, serial ports and mice
-
-!!4.1 Port access worked with older version, but doesn't work now!
-
-
-
-Read ..__/doc/README.txt__ and the port-section
-in ..__/etc/config.dist__
-
-
-
-
-!!4.2 Port access was faster with older versions!
-
-
-
-To have a chance to log port access, by default every port access
-produces an exception out of vm86-mode. This takes some time.
-If you don't want to log port access, use the keyword __"fast"__ in the
-appropriate port statement.
-
-
-
-
-!!4.3 Where are the (microsoft compatible) mouse drivers?
-
-
-
-Tom Kimball (__tk@pssparc2.oc.com__) reported (93/11/24) that
-
-
-Several people said to use a different mouse driver and suggested
-some. I found a couple that seem to work fine.
-
-oak.oakland.edu:/pub/msdos/mouse/mouse701.zip (mscmouse)
-oak.oakland.edu:/pub/msdos/mouse/gmous102.zip (gmouse)
-
-Normally you can use dosemu's internaldriver, so you don't need any
-additional mousedriver in dosemu outside winemu(97/2/10).
-
-
-
-
-!!4.4 Why doesn't the mouse driver work?
-
-
-
-Mark Rejhon (__mdrejhon@magi.com__) reported (95/4/7) that
-
-
-If you start the mouse driver and it just hangs (it might actually
-take 30-60s), but if you are waiting longer than a minute for the
-mouse driver to start, try specifying the COM port that the mouse
-is on, at the mouse driver command line.
-
-
-
-
-!!4.5 Why does dosemu clobber COM4?
-
-
-
-Rob Janssen (__rob@pe1chl.ampr.org__) reported (94/3/24) that
-
-
-According to __jmorriso@bogomips.ee.ubc.ca__, "dosemu still
-clobbers COM4 (0x2e8, IRQ 5). 0x2e8 isn't in ports{} in config. I
-have to run setserial /dev/cua3 irq 5 on it after dosemu exits."
-
-
-This is caused by your VGA BIOS. I have found that by enabling the IO
-port trace and seeing where it was clobbered.
-
-
-Disable the "allowvideoportaccess on" line in config and it will
-work fine. When you then have problems with the video, try to enable
-more selective ranges of IO addresses (e.g., 40-43).
-
-
-
-
-!!4.6 How do I use dosemu over the serial ports?
-
-
-
-
-
-
-
-
-
-
-
-!!4.7 How can I switch between dosemu and a shell over the serial line?
-
-
-
-John Taylor (__taylor@pollux.cs.uga.edu__) reported (94/5/25)
-that
-
-
-I am running Linux 1.1.13 and want to point out a great feature that
-should be protected and not taken out (IMHO). With the 52 version, I
-can run the program, "screen." From screen, i can invoke dos -D-a.
-What is really great (IMHO) is the screen commands (the CTRL-A cmds)
-still work. This means I can do a CTRL-A C and add another unix shell,
-and switch between the two (DOS / UNIX). This allows me to use dosemu
-over the serial line really well, because switching is made easy.
-
-
-
-
-!!4.8 How can I get the parallel ports to work?
-
-
-
-The dosemu.conf has lines at the end to redirect printers to either
-lpr or a file. If you want direct access to the bare metal, comment
-out these emulation lines, and add the line
-
-$_ports { device /dev/lp0 fast range 0x3bc 0x3bf } # lpt0
-
-for the "monitor card" printer port (corresponds to /dev/lp0), or
-
-$_ports { device /dev/lp1 fast range 0x378 0x37f } # lpt1
-
-or
-
-$_ports { device /dev/lp1 fast range 0x278 0x27f } # lpt2
-
-for LPT1 (/dev/lp1) or LPT2 (/dev/lp2) respectively(97/2/9).
-
-
-Hans Lermen (lermen@dosemu.org) writes:
-
-
-But NOTE: these lines should not be _added_ simply, the string should
-be concatenated such as:
-
-
-$_ports = "...."
-$_ports = $_ports, " device /dev/lp0 fast range 0x3bc 0x3bf"
-=
-This blank is important
-
-
-
-
-
-
-----
-
-!!5. Multiple users and Non-interactive sessions
-
-!!5.1 Can I use dosemu on a multi-user system?
-
-
-
-Yes, you can configure dosemu on a per-user basis. See README.txt for
-details.
-
-
-
-
-!!5.2 How can I run dos commands non-interactively?
-
-
-
-
-You can do any of the following:
-1. redirect a file to dosemu standard input
-2. use the keystroke configuration option and the -I command line option
-as described in the README.txt file to specify keystrokes on the command
-line that will act exactly as if you had typed them within dosemu
-3. use the mkdexe program to create a DEXE file - a small
-DOS filesystem image containing just the program you want to run -
-see the README.txt file for details.
-
-
-Here are some additional alternatives:
-
-
-
-
-
-Daniel T. Schwager (__danny@dragon.s.bawue.de__) reported
-(94/7/2) that
-
-
-You can use different dosemu.conf files (and different hd-boot-images
-with different autoexec.bat's) and call dosemu like
-
-$ dos -F my_quicken_q_exe_dosemu.conf
-
-
-
----------------------
-
-
-
-
-
-Dietmar Braun (__braun@math20.mathematik.uni-bielefeld.de__)
-reported (94/7/4) that
-
-
-This is no problem at all when you use the redirector of dosemu. It
-is possible to redirect a drive letter to a linux path given by an
-environment variable.
-
-
-So I have a shell script named "__DOS__" which does something like
-
-mkdir /tmp/dos.$$
-DOSTMP=/tmp/dos.$$; export DOSTMP
-
-and then a little trick to get "__echo $* >
-$DOSTMP/startup.bat__" really working (actually a small C Program
-which turns '/' in '__\__' and terminates lines correctly for
-messy dos with cr/lf pairs and adds __^Z__ at the end of the
-file), creates startup files, links and so on in this directory, and
-then starts dosemu. Within "__autoexec.bat__" drive c: is
-redirected from hdimage to this tmp-directory, which has links for
-__$HOME__ and __$PWD__.
-
-
-So if I want to see my filenames shortened to 8.3 I can type "__DOS
-dir__" and I get my current directory listing. So I have full DOS
-multi user (I don't have any DOS partition and redirecting to Linux
-preserves user permissions) and multi tasking. (dosemu sessions
-are completely independent). I did this once to be able to use a dos
-driver for my printer. My printcap df is actually a DOS program. So
-you can even make DOS executables act as lpr filters.
-
-
-
-----
-
-!!6. dosemu and Netware
-
-!!6.1 How do I get Netware access from dosemu?
-
-
-
-As always, access through the Linux filesystem is preferred. Mount
-your Netware drives with Caldera's Netware utilities or Volker
-Lendecke's free ncpfs utility
-(__
-ftp://ftp.gwdg.de:/pub/linux/misc/ncpfs__). If you need real IPX access,
-e.g. to run Novell's "syscon", read ..__/doc/NOVELL-HOWTO.txt__.
-You probably can not currently access Netware from FreeDOS.
-
-
-
-----
-
-!!7. dosemu and X-windows(97/2/9).
-
-!!7.1 Can I run dosemu in console mode while running X?
-
-
-
-Ronald Schalk (__R.Schalk@uci.kun.nl__) reported (94/1/17)
-that
-
-
-Yes, no problem. Just remember to use ctrl-alt-<Fn> to go to
-a Virtual Console (VC), and you can run any Linux application (dosemu
-is a linux-application). I've got almost always WP5.1 in a dos
-session.
-
-
-[[Note: Use ctrl-alt-F7 to switch back to X from dosemu, if X
-runs on VC7.]
-
-
-
-
-
-
-
-!!7.2 Is it possible to run dosemu in a window in X-windows?
-
-
-
-If you have X installed and you have successfully compiled dosemu
-and run it successfully outside X-windows, you should be able to
-run "xdos" or "dos -X" right away to bring up a dosemu
-window. If this does not work, make sure:
-
-
-
-
-1. Dosemu has X support compiled in. This is default, however
-if you you have compiled dosemu with "x off" in the
-compiletime-settings file you don't have X support. So changing
-"x off" to "x on" in the compiletime-settings file, followed by
-"make pristine; make; make install" should build
-you a dosemu-executable with X support, if you have the
-X-libraries installed in /usr/X11R6.
-2. Set up your X key-mappings. In an xterm, type
-xmodmap -e "keycode 22 = 0xff08"
-xmodmap -e "keycode 107 = 0xffff"
-These lines fix the backspace and delete keys respectively.
-3. Configure the X-related configuration options in your
-/etc/dosemu.conf file.
-
-
-
-Alternatively, you can run dosemu inside a color xterm,
-which is not recommended because many color xterms have buggy
-support for the complex text display capabilities of dosemu.
-This does not require X_SUPPORT to be compiled into dosemu.
-However, if you really want to do this, do the following steps:
-
-
-
-
-1. Install ansi_xterm. The recommended package is available as:
-tsx-11.mit.edu:/pub/linux/ALPHA/dosemu/Development/ansi-xterm-R6.tar.gz
-2. Set up your X key-mappings. In an xterm, type
-xmodmap -e "keycode 22 = 0xff08"
-xmodmap -e "keycode 107 = 0xffff"
-These lines fix the backspace and delete keys, respectively.
-3. Configure the terminal-related (not X-related) settings in
-/etc/dosemu.conf
-
-
-
-
-
-
-Marty Leisner (__leisner@sdsp.mc.xerox.com__) reported (95/3/31)
-that
-
-
-I have xrdb log the following resources
-
-dosxterm*Font: vga
-dosxterm*geometry: 80x25
-dosxterm*saveLines: 25
-
-or I alias "dosxterm" to
-"term -fn vga -title dosxterm -geometry 80x25 -sl 25"
-
-
-If you use the xrdb method, all you have to do is run
-"xterm -name dosxterm"
-
-
-
-
-!!7.3 Xdos dosen't work on a remote X-display!
-
-
-
-At present, dosemu is set up to use the MIT shared memory
-extensions. This extension only works on a local display. If you want
-to run xdos on a remote display, compile dosemu with "mitshm off" in
-the compiletime-settings file after a __"make pristine"__ or on
-the clean source tree(97/2/9).
-
-
-
-
-!!7.4 Xdos dosen't find the VGA font
-
-
-
-Check that the vga fonts you installed are listed in the font.dir of the
-directory you installed the fonts in:
-
-
-hertz:~> grep misc /usr/X11R6/lib/X11/XF86Config
-!FontPath "/usr/X11R6/lib/X11/fonts/misc/"
-hertz:~> grep vga /usr/X11R6/lib/X11/fonts/misc/fonts.dir
-vga.pcf vga
-vga11x19.pcf vga11x19
-hertz:~> ls /usr/X11R6/lib/X11/fonts/misc/vga*
-/usr/X11R6/lib/X11/fonts/misc/vga.pcf
-/usr/X11R6/lib/X11/fonts/misc/vga11x19.bdf
-/usr/X11R6/lib/X11/fonts/misc/vga11x19.pcf
-
-
-If you installed some X-fonts, like you did when you installed dosemu with
-X-Support for the first time, "mkfontdir" and then "xset fp rehash" needs
-to be run. The dosemu install should take care for "mkfontdir" and tells you
-about "xset fp rehash". Tell us if it doesn't work for you.
-(97/2/13)
-
-
-
-
-!!7.5 The vga font is very small on my high resolution display
-
-
-
-Look for the vga11x19 font.
-(97/2/13)
-
-
-
-
-!!7.6 Dosemu compilation fails with some strange error regarding X!
-
-
-
-As stated above, dosemu uses the MIT shared memory extensions by
-default. Under XFree86 they are only available with Version 3.1.2 and
-above. If you have an older version, consider to upgrade, or configure
-dosemu to not use this extension (see last section)(97/2/9).
-
-
-
-
-!!7.7 Does ansi emulation work properly?
-
-
-
-Marty Leisner (__leisner@sdsp.mc.xerox.com__) reported (95/3/31)
-that
-
-
-Yes. I use nnansi.com under X windows. I find 25, 43 and 50
-line mode work properly, however 50 line mode is difficult to use on a
-1024x768 screen (unless smaller fonts are used or you use a bigger
-screen. 43 line mode will resize the xterm window to use 43 lines.
-
-
-
-
-
-
-----
-
-!!8. dosemu and MS-Windows 3.1
-
-!!8.1 Is it possible to run MS-Windows 3.1 under dosemu?
-
-
-
-The ..__/doc/README.Windows__ file says:
-
-
-
-
-***************************************************************
-* WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!! *
-* *
-* Danger Will Robinson!!! This is not yet fully supported *
-* and there are many known bugs! Large programs will almost *
-* certainly NOT WORK!!! BE PREPARED FOR SYSTEM CRASHES IF *
-* YOU TRY THIS!!! *
-* *
-* WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!! *
-***************************************************************
-
-
-
-Okay, it is possible to boot WINOS2 (the modified version of Windows 3.1
-that OS/2 uses) under DOSEMU. Many kudos to Lutz & Dong!
-
-
-However, YOU NEED BOTH LICENSES, for WINDOWS-3.1 as well OS/2 !!!
-
-
-There are many known problems. Windows is prone to crash, could take data
-with it, large programs will not load, etc. etc. etc.
-In other words, it is NOT ready for daily use. Many video cards are known
-to have problems (you may see a nice white screen, however, look below
-for win31-in-xdos). Your program groups are all likely to disappear.
-... Basically, it's a pain.
-
-
-for more details see the README.txt file.
-
-
-
-
-!!8.2 Can I run 32bit stuff with winemu
-
-
-
-Sorry, no you can't.
-Win32s needs stuff running in ring . That's a "nono" with linux.
-(97/04/27)
-
-
-
-
-!!8.3 Errormessage: Cannot find the vdtapi.386 file when starting dosemu
-
-
-
-As explained above, winemu can't handle 32 bit stuff. All drivers ending in
-386 are 32bit. So to run winemu, you have to delete all references to .386
-drivers in your win.ini.
-(97/04/27)
-
-
-
-
-!!8.4 Windows 3.x in xdos:
-
-
-
-As of version .64.3 DOSEMU is able to run Windows in xdos. Of
-course, this is not recommended at all, but if you really want to try,
-it is safer then starting windows-31 on the console, because _when_ it
-crashes, it doesn't block your keyboard or freeze your screen.
-
-
-Hints:
-
-1. Get Dosemu & Linux source.
-2. Unpack dosemu.
-3. Run "./configure" to configure Dosemu (it will enable vm86plus as a
-default).
-4. Type "make" to compile.
-5. Get a Trident SVGA drivers for Windows. The files are tvgaw31a.zip
-and/or tvgaw31b.zip. They are available at garbo.uwasa.fi in
-/windows/drivers (any mirrors?).
-6. Unpack the Trident drivers.
-7. In Windows setup, install the Trident "800x600 256 color for 512K
-boards" driver.
-8. Do the things described above to get and install OS2WIN31.
-10. Start xdos.
-11. In Dosemu, go to windows directory and start winemu.
-12. Cross your fingers.
-
-
-
-
-
-!!8.5 Can I install windows from within dosemu?
-
-
-
-__No__ you can't. Dos will tell you something like
-
-The XMS driver you have on your system is not
-compatible with Windows...
-
-You need to install windows from Dos. You can copy the windows tree to
-somewhere on your Linux Filesystem and use lredir to mount it on the
-same place as it is in dos. Example:
-
-You have windows in d:\windows
-You have d:\ mounted as /dosc in Linux
-You copy the windows tree to Linux,
-e.g. "cp -a /dosd/windows /usr/share
-Inside dosemu you redirect the copied tree like
-lredir d: linux\fs\dosd
-
-Now dosemu can't mess around in you windows directory, but changes in the
-windows directory aren't seen by dosemu too. If you want to do the
-same with windows on drive c:> look in this FAQ how to redirect c:.
-
-
-But you can use "setup" from inside the windows directory to install drivers
-and change some settings.
-(97/2/1497)
-
-
-
-
-!!8.6 Notes for the mouse under win31-in-xdos:
-
-
-
-1. Use the mouse driver "mouse.drv" from WinOS2
-
-
-2. In order to let the mouse properly work you need the following in your
-win.ini file:
-
-[[windows]
-MouseThreshold1=
-MouseThreshold2=
-!MouseSpeed=
-
-
-
-3. The mouse cursor gets not painted by X, but by windows itself, so it depends
-on the refresh rate how often it gets updated, though the mouse coordinates
-movement itself will not get delayed.
-( In fact you have 2 cursors, but the X-cursor is given an 'invisible'
-cursor shape while within the DOS-Box. )
-
-
-4. Because the coordinates passed to windows are interpreted relatively, we
-need to calibrate the cursor. This is done automatically whenever you
-enter the DOS-Box window: The cursor gets forced to ,0 and then back
-to its right coordinates. Hence, if you want to re-calibrate the cursor,
-just move the cursor outside and then inside the DOS-Box again.
-(97/2/10)
-
-
-
-
-!!8.7 Why did my Icon disappear from the Program manager?
-
-
-
-MS-Windows and WinOS2 handle the program manager group differently. While
-MS-Win store the setup in progman.ini, WinOS2 wants the contents of
-progman.ini in system.ini. Here's a tip from __(friest@acm.org (Todd
-T. Fries))__:
-
-cat progman.ini >> system.ini
-
-Be sure to use >> :-)
-
-
-
-----
-
-!!9. Video and sound
-
-!!9.1 Can I run 32-bit video games under dosemu?
-
-
-
-Mark Rejhon (__mdrejhon@magi.com__) reported (95/4/8) that
-
-
-With the recent DPMI improvements that has gone into .60, you can now
-run some 32-bit video games in dosemu. If the game is compatible in
-an OS/2 DOS box, there are chances that it will work in dosemu.
-(Example 32-bit games include Descent, Dark Forces, Mortal Kombat 2,
-Rise of The Triad, which have all successfully been tested in recent
-dosemu releases).
-
-
-Before you attempt to run a video game, you must have the keyboard
-configured in raw keyboard mode and enabled VGA graphics modes, in the
-__/etc/dosemu.conf__ file.
-
-
-Note, however, you will have to turn off the sound in the game.
-(Someone will have to program in sound board emulation before we can
-avoid this). Note that game timers can be a little bit slow, due to
-Linux multitasking and lack of high-frequency timer support. So the
-games may run from anywhere from 5 to 100 percent speed. Typically,
-the speed is approximately 50 percent in recent dosemu releases and is
-expected to improve eventually.
-
-
-Who knows, it might even work. If you can't get it to work, check
-EMUfailure.txt if the program is listed there, or falls in a category of
-programs that at present don't or probably never work with dosemu. If
-you think, it should be listed in EMUfailure.txt, report to
-__linux-msdos@vger.rutgers.edu__
-
-
-There is a security hole when having enabled DPMI and having dosemu
-suid root (especially when using dos4gw-based games), the client is able
-to access the whole user space, hence also can modify the dosemu code
-itself. Use of the 'secure' option in /etc/dosemu.conf, e.g.
-
-$_secure = "ngd" # secure for: n (normal users), g (guest), d (dexe)
-
-disables this. It is better to run dosemu as a normal user under X
-rather than root anyway.
-
-
-
-
-!!9.2 Exiting from dosemu gives me a screen full of garbage.
-
-
-
- (95/4/8)
-
-
-The problem is that the font information for the VGA text screen is
-not being saved. Get a copy of the svgalib package. The current
-source is in
-
-sunsite.unc.edu:/pub/Linux/libs/graphics/svgalib-1.3.1.tar.gz
-
-It may also be available as a pre-compiled package in your favorite
-Linux distribution (e.g., Slackware, etc.). Use savetextmode to
-save the current text mode and font to a file in __/tmp__ before
-running dosemu. Then run textmode upon exiting dosemu to restore
-it.
-
-
-Addition from (__lermen@elserv.ffm.fgan.de__(97/2/11)):
-
-
-Have a look also at src/arch/linux/debugger/README.recover and
-README.dosdebug, dosdebug can aid you recovering.
-
-
-
-
-!!9.3 Why doesn't my soundcard software work with dosemu?
-
-
-
-Dosemu includes a rudimentary soundblaster emulator called SBemu -
-the documentation for it is currently at
-http://www.slitesys.demon.co.uk/a.macdonald/dosemu/sound/
-This is a work in progress, not completed yet so much or most
-DOS software that uses sound will not work correctly with it yet.
-
-
-
-----
-
-!!10. Games
-
-!!10.1 Duke3d dosen't work
-
-
-
-Hans Lermen __<lermen@elserv.ffm.fgan.de>__ said (97/2/16):
-duke3d must be 'configured' via a setup, within this setup you have to choose
-'keyboard + mouse', else it won't work.
-
-
-
-----
-
-!!11. Problems and fixes
-
-!!11.1 Security issues
-
-
-
-A full featured Dosemu needs to be suid root, e.g to access ports.
-Most dos programs don't need this however so when running under X you
-usually do not need to run dosemu as root.
-Dosemu runs as suid "root" only where it is needed, and releases this right
-thereafter. But with DPMI, the Dos client programm can access the whole user
-space, hence also can modify the dosemu code itself. Use of the 'secure'
-option in /etc/dosemu.conf disables this.
-There are several other important security considerations discussed in the
-Security section of the README.txt file.
-
-
-
-
-!!11.2 dosemu says "ERROR: general protection" and terminates when I run some program
-
-
-
-This will happen if your program uses DPMI and you do not have DPMI
-enabled. Try changing the line
-
-$_dpmi = (off)
-
-in /etc/dosemu.conf to
-
-$_dpmi = (nnnn)
-
-where nnnn is the number of kilobytes of memory you wish to give to
-the DOS program (e.g. Doom requires about 4000 kilobytes). If you do
-this, you should not run dosemu as root (see the Security Issues section) -
-it is better not to run dosemu as root whenever possible, in any case.
-
-
-Another likely cause is that your program uses VCPI (see EMUfailure.txt
-for more details) or some other means of switching to protected mode
-(other than DPMI), in which case it will never work under dosemu.
-
-
-If none of these is the case, see section 1.14 I have a program that
-fails, not listed in EMUfailure.txt.
-
-
-
-
-!!11.3 Dosemu dies when booting. I have Win95 installed.
-
-
-
-Dosemu relies that the Dos-Version on the hdimage and the Drive you map
-to contain command.com are the same. If not, dosemu will crash sooner or
-later. With the dual boot option Win95 offers when pressing the F4,F5 and
-F8 Keys with the "Starting Win95" text, versions on the Win95 drive may
-swap. Take special care for command.com. Let your shell variable in
-config.emu point to the correct static version of command.com, e.g.:
-shell=c:\win95\command.com c:\ /P /E:1024 (97/02/28)
-
-
-
-
-
-
-
-!!11.4 Dosemu hangs! How can I kill it?
-
-
-
-Switch to another console and type dosdebug, then type kill (it may
-take a while but will work eventually).
-
-
-
-
-!!11.5 Dosemu crashed and now I can't type anything.
-
-
-
-Daniel Barlow(jo95004@sable.ox.ac.uk) reported (95/4/8) that
-
-
-If you have no terminal or network access that you can use to log in,
-you may have to press the reset button. If you can still get a usable
-shell somehow, run "kbd_mode -a" to switch the keyboard out of
-raw mode, and/or "stty sane" on the console so that you can see
-what you're typing.
-
-
-A useful thing to do is to use a script to run dosemu, and run
-"kbd_mode -a" automatically right after dosemu. When dosemu
-crashes, the script usually will resume running, and execute the
-"kbd_mode -a" command.
-
-
-
-
-!!11.6 I've enabled EMS memory in dosemu.conf but it does not help.
-
-
-
-Rob Janssen (rob@pe1chl.ampr.org) reported (94/7/11)
-
-
-Don't forget to load the provided ems.sys from the config.sys file.
-
-
-
-
-!!11.7 How do I get rid of all those annoying "disk change" messages?
-
-
-
-(94/8/11)
-
-
-Grab and install klogd. Try
-
-sunsite.unc.edu:/pub/Linux/system/Daemons/sysklogd1.2.tgz
-
-
-
-
-
-!!11.8 Why won't dosemu run a second time after exiting in console mode?
-
-
-
- Aldy Hernandez (__aldy@sauron.cc.andrews.edu__) reported
-(94/7/8) that
-
-
-You should disable your video and/or BIOS caching.
-
-
-
-
-!!11.9 Why will dosemu run in a term but not in the console?
-
-
-
-!JyiJiin Luo (__jjluo@casbah.acns.nwu.edu__) reported (94/4/19)
-that
-
-
-I experienced exactly the same problem before. I figured out all the
-video shadow in my AMI BIOS must be disabled. Now dosemu runs fine on
-my system.
-
-
-
-
-!!11.10 How can I speed up dosemu?
-
-
-
-In some cases it is useful to play with the value of the
-!HogThreshold variable in your dosemu.conf file.
-
-
-
-
-
-Daniel Barlow(__jo95004@sable.ox.ac.uk__) reported (95/4/8) that
-
-
-!HogThreshold should now be set to approximately half of the !BogoMips
-value that the system reports on boot.
-
-
-
-
-
-
-
-!!11.11 My CDROM drive has problems reading some files under dosemu.
-
-
-
-Vinod G Kulkarni (__vinod@cse.iitb.ernet.in__) reported
-(94/4/7) that
-
-
-When a CDROM is mounted from linux and used from within dosemu (mapped
-drive), there could be some problems. The CD-ROM driver (iso9660) in
-the kernel tries to find out the type of the file (i.e. binary or
-text). If it can't find, it tries to guess the type of the file using
-a heuristic. This heuristic fails under some circumstances when a
-(almost) text file is to be treated as binary. (I do not know if it
-is a bug or feature.)
-
-
-The result of this is that if you copy such a file from CD-ROM (from
-linux itself, and not necessarily dosemu), the resulting file will be
-usually bigger than original file. (Blanks get added before
-^J,^M.) So a program running in dosemu gives an error or
-hangs, which may be mistaken as problem of dosemu.
-
-
-
-
-
-Rob Janssen (__pe1chl@rabo.nl__) reported (94/8/10) that
-
-
-The way to solve this is to turn off conversion altogether. Pass the
-option "__-o conv=binary__" to the mount command mounting the
-CD-ROM, or use the following in __/etc/fstab__:
-
-/dev/cdrom /cdrom iso9660 conv=binary,ro
-
-No patches to the kernel are necessary.
-
-
-
-
-!!11.12 How do I see debugging output?
-
-
-
-Daniel Barlow(__jo95004@sable.ox.ac.uk__) reported (95/4/8) that
-
-
-As of dosemu .60, debugging output is redirected to a file specified
-on the command line. Use "__dos -D+a -o /tmp/debug__" to log all
-debug output to __/tmp/debug__. There should no longer be any
-need to redirect stderr.
-
-
-
-
-
-
-
-!!11.13 Why are my keystrokes echoed ttwwiiccee??
-
-
-
-Nick Holloway (__alfie@dcs.warwick.ac.uk__) reported (94/2/22)
-that
-
-
-After running dos after playing with some stty settings, I was getting
-doubled key presses. I can now reveal what the reason is!
-
-
-It only happens when dos is run on the console with 'istrip' set. This is
-(I think) because the raw scancodes are mutilated by the 'istrip',
-so that key release events look like key press events.
-
-
-So, the input processing needs to be turned off when using the scan
-codes on a console (it wouldn't be a good idea to do it for tty lines).
-
-
-
-
-!!11.14 Dosemu scrambles my screen?
-
-
-
- For those graphics cards not fully supported in dosemu, with allowed
-console graphics a dosemu crash may leave your console in a scrambles and
-nearly unusable way. To prepare for that situation, Spudgun
-<spudgun@earthlight.co.nz> posted the following solution. First save your
-registers when running on the console
-~> cat /usr/bin/savetextmode
-~> restoretextmode -w /etc/textregs
-~> restorefont -w /etc/fontdata
-Then, when a crash happened, run following script:
-restoretextmode -r /etc/textregs
-restorefont -r /etc/fontdata
-restorepalette
-
-
-__If it doesn't fix it nothing will__
-I also found having an X server running sometimes put my Vid card's
-registers into a strange state where this script made things worse
-I think since changing X servers and/or running savetextmode on a vt while X
-was running helped. (97/04/08)
-
-
-
-
-!!11.15 MS !FoxPro 2.6 won't run
-
-
-
-!FoxPro 2.6 doesn't run on network drives. Alexey Naidyonov
-<growler@growler.tsu.tula.ru> states on that problem:
-And I guess your !FoxPro files are on lredir'ed disk, yeah? The matter is that
-!FoxPro doesn't run on such disk, but when I said disk { partition ... } in
-/etc/dosemu/conf, it runs.
-
-
-
-
-
-
-----
-
-!!12. Contributing to the dosemu project
-
-!!12.1 Who is responsible for dosemu?
-
-
-
-
-
-
-Dosemu is built upon the work of Matthias Lautner and Robert Sanders.
-Hans Lermen (lermen@dosemu.org) is responsible for
-organizing the latest releases of dosemu.
-
-History of dosemu
-Version Date Person
--------------------------------------------------
-.1 September 3, 1992 Matthias Lautner
-.2 September 13, 1992 Matthias Lautner
-.3 ??? Matthias Lautner
-.4 November 26, 1992 Matthias Lautner
-.47 January 27, 1993 Robert Sanders
-.47.7 February 5, 1993 Robert Sanders
-.48 February 16, 1993 Robert Sanders
-.48pl1 February 18, 1993 Robert Sanders
-.49 May 20, 1993 Robert Sanders
-.49pl2 November 18, 1993 James !MacLean
-.49pl3 November 30, 1993 James !MacLean
-.49pl3.3 December 3, 1993 James !MacLean
-.50 March 4, 1994 James !MacLean
-.50pl1 March 18, 1994 James !MacLean
-.52 June 16, 1994 James !MacLean
-.60 April 9, 1995 James !MacLean
-.64.4 February 9,1997 Hans Lermen
-.66.3 April 20, 1997 Hans Lermen
-.98.1 December 9, 1998 Hans Lermen
-.98.6 March 21, 1999 Hans Lermen
-
-
-
-
-
-!!12.2 I want to help. Who should I contact?
-
-
-
-The dosemu project is a team effort. If you wish to contribute,
-see the DPR (dosemu Project Registry). A current copy may be found
-in __doc/DANG__
.
-----
+Describe
[HowToDOSEMUHOWTO
] here.
