Deon George wrote to Niels Haedecke:   
   DG> On 11/21/18, Niels Haedecke said the following...   
   DG>  NH> Well, looks like I have sorted this one out. I got "pimpwars" running    
   DG> in   
   DG>  NH> QEMU and it works real nice. I will have to do some more testing with   
   DG>  NH> other doorgames but at least this one (which I picked randomly)    
   DG> works.   
   DG>  NH>    
   DG>  NH> If anyone is interested in the configuration details (door.sh script    
   DG> and   
   DG>  NH> FreeDOS config), feel free to send me a netmail.   
   DG>    
   DG> Awesome, I would be interested. Could you share the details?   
   DG>    
   DG> ...deon   
   DG>    
   DG>  _--_|\   | Deon George   
   DG> /      \  | Chinwag BBS - A BBS on a PI in Docker!   
   DG> \_.__.*/  |    
   DG>       V   | Coming from the 'burbs of Melbourne, Australia   
   DG>    
   DG> --- Mystic BBS v1.12 A39 2018/04/21 (Raspberry Pi/32)   
   DG>  * Origin: Chinwag | MysticBBS in Docker! (3:633/509.1)   
   DG>    
      
   Well, there once was a howto on cyberia.darktech.org but this domain is long   
   gone. Fortunately, I did save a copy of the howto back then and build up on   
   this. I'll upload a "qemu-dos-door-kit" to my bbs once it is ready to open to   
   the public. This "kit" will contain the original howto and the scripts and DOS   
   configurations I have created to make things work.   
       
   With regards to MBSE on debian/raspbian Linux you need the following   
   prerequisites:   
      
   1. socat tool installed on your Linux box   
      
   2. qemu-system-i386 installed on your Linux box   
      
   3. a small disk image about (25 Megabyte in size) where a basic installation    
   of   
   FreeDOS resides   
      
   4. The BNU.COM FOSSIL driver installed within the FreeDOS image mentioned   
   above and loaded by AUTOEXEC.BAT during QEMU startup.   
      
   5. a directory within MBSE's installation directory that contains the doorgame   
   and which will be mapped into QEMU as DOS drive D:   
      
   6. The script below which will be executed from the MBSE .mnu file. It   
   basically maps the MBSE user home directory into the DOS system as drive D:   
   (letting me access the door.sys dropfile) and it maps the respective door game   
   directory into the DOS system as drive E: - then it creates a temporary go.bat   
   file that will be executed and run the door. With QEMU running in the   
   background, acces from MBSE to the running door game is done through the   
   virtual serial port of the QEMU system via the "socat" command.        
      
   --- script ---   
      
   #!/bin/bash   
   # set -x   
   trap '' INT TSTP   
      
   # get number of running QEMU procs and exit if load too high   
   # (this is needed for Raspberry Pi's)   
   Q_COUNT=$(ps ax | grep 'qemu-system-i386' | grep -v grep | wc -l)   
      
   if [ "${Q_COUNT}" -ge 3 ]   
   then   
      echo "There are currently too many QEMU sessions running."   
      echo "Please try again later."   
      sleep 5   
   fi   
      
   # get random tcp port and re-shuffle if already in use   
   Q_PORT=`shuf -i 1025-65536 -n 1`   
      
   while $(nc -z localhost ${Q_PORT} )   
   do   
      Q_PORT=`shuf -i 1024-65536 -n 1`   
   done   
      
   # define virtual serial port on QEMU system   
   Q_SERIAL="-serial tcp::${Q_PORT},server,nowait,nodelay"   
      
   # attach user home directory to drive D:   
   D_DRIVE="-drive format=raw,file=fat:rw:${HOME}"   
      
   # attach door game directory to drive E:   
   E_DRIVE="-drive format=raw,file=fat:rw:/opt/mbse/doors/qemu/doors/pimpwars"   
      
   # ...while we're at it, get the user's node number from door.sys   
   U_NODE=$(head -n 4 $HOME/door.sys | tail -n 1 | awk '{ print $1}' | tr -d    
   '\r')   
      
   # build temporary go.bat to launch door game   
   echo "@ECHO OFF" > $HOME/go.bat   
   echo "C:" >> $HOME/go.bat   
   echo "CD C:\\BNU" >> $HOME/go.bat   
   echo "BNU.COM > NUL" >> $HOME/go.bat   
   echo "E:" >> $HOME/go.bat   
   echo "PIMPWARS.EXE D:\DOOR.SYS $U_NODE" >> $HOME/go.bat   
   echo "FDAPM POWEROFF" >> $HOME/go.bat   
      
   # change to QUEMU door dir   
   cd /opt/mbse/doors/qemu   
      
   # start QEMU and wait a second   
   qemu-system-i386 -m 1M -boot c -display none -localtime -drive   
   file=/opt/mbse/doors/qemu/dos.img,format=raw ${Q_SERIAL} ${D_DRIVE} ${E_DRIVE}   
   > /dev/null 2>&1 &   
   sleep 3   
      
   # run socat to connect to the virtual serial port on tcp port ${Q_PORT}   
   socat -,raw,echo=0 TCP:localhost:${Q_PORT}   
      
   # clean up    
   rm $HOME/go.bat   
   cd ~   
   clear   
      
   -- /script --   
      
   Hope this helps a little, otherwise keep asking ;)   
      
   Kind regards,   
   Niels        
      
       Greetings, Niels Haedecke   
      
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