Hi Ulrich, Thanks for the link. I compared the 2 files and didn't find anything of significance. Your change:
IF "%config%"=="2" PCNTPK INT=0x60 IF NOT "%config%"=="2" LH PCNTPK INT=0x60 seems smart, however. Based on Eric's suggestion of using more cautious settings, I found the JEMMEX doc page (http://help.fdos.org/en/hhstndrd/base/jemmex.htm) and learned how to change the JEMMEX options. I excluded the region of memory that might already be in use (indicated in the original error message): 1?DEVICE=C:\FDOS\BIN\JEMMEX.EXE NOEMS X=C900-DFFF I=TEST NOVME NOINVLPG Boot option 1 no longer crashes, but it doesn't appear to be an improvement over boot option 2. Here is what I am getting from C:\mem after boot: Boot option 1 (http://tinypic.com/r/zm1boj/9): Total memory Free: 26,699K Total Expanded (EMS): 8,576K Free Expanded (EMS): 8,192K Largest executable program size: 597K Largest free upper memory block: 2K Boot option 2 (http://tinypic.com/r/2zzjl77/9): Total memory Free: 26,669K Total Expanded (EMS): 31M Free Expanded (EMS): 25M Largest executable program size: 610K Largest free upper memory block: 4K I don't have much experience with the way DOS memory works. What do you think of these results? Anything else I should be looking at? Thanks, Abe On 6/27/2016 8:23 PM, Ulrich Hansen wrote: > Hi Abe, > > if you like, take a look at: > > https://www.lazybrowndog.net/freedos/virtualbox > > There are three VirtualBox images of FreeDOS 1.1. > > I put quite some effort in them to make them work. I remember the crash > you are talking about, but, sorry, I don’t remember how I fixed it > (wasn’t it something about not loading high something?? Very sorry. > Maybe you compare the AUTOEXEC.BAT and FDCONFIG.SYS of the FreeDOS 1.1 > VirtualBox image? > > ------------------------------------------------------------------------------------- > AUTOEXEC.BAT > > @echo off > SET LANG=EN > SET MTCPCFG=C:\FDOS\MTCP.CFG > SET WATTCP.CFG=C:\FDOS > SET PATH=%dosdir%\BIN;C:\DOSZIP > SET NLSPATH=%dosdir%\NLS > SET HELPPATH=%dosdir%\HELP > SET TEMP=%dosdir%\TEMP > SET TMP=%TEMP% > SET BLASTER=A220 I5 D1 H5 P330 > SET DIRCMD=/P /OGN /4 > SET COPYCMD=/-Y > if "%config%"=="4" goto end > SHSUCDX /QQ /D3 > LH SHSUCDHD /QQ /F:FDBOOTCD.ISO > LH FDAPM APMDOS > IF "%config%"=="2" LH SHARE > LH DOSLFN > REM NLSFUNC C:\FDOS\BIN\COUNTRY.SYS > REM DISPLAY CON=(EGA),858,2) > REM MODE CON CP PREP=((858) C:\FDOS\CPI\EGA.CPX) > REM KEYB US,858,C:\FDOS\bin\keyboard.sys > REM KEYB GR,,keyboard.sys /NOHI > REM CHCP 858 > IF "%config%"=="2" PCNTPK INT=0x60 > IF NOT "%config%"=="2" LH PCNTPK INT=0x60 > DHCP > REM M2WAT.COM <http://M2WAT.COM> transfers the mTCP configuration to > WATTCP.CFG. > REM Disable it, if you want to use a custom WATTCP.CFG. > C:\FDOS\M2WAT.COM <http://M2WAT.COM> > MOUSE > DEVLOAD /H /Q %dosdir%\BIN\UIDE.SYS /H /D:FDCD0001 /S5 > SHSUCDX /QQ /~ /D:?SHSU-CDR,D /D:?SHSU-CDH,D /D:?FDCD0001,D > /D:?FDCD0002,D /D:?FDCD0003,D > MEM /C /N > IF NOT "%config%"=="4" SHSUCDX /D > GOTO END > :END > SET AUTOFILE=%0 > SET CFGFILE=C:\FDCONFIG.SYS > alias reboot=fdapm warmboot > alias reset=fdisk /reboot > alias halt=fdapm poweroff > alias shutdown=fdapm poweroff > alias cfg=edit %cfgfile% > alias auto=edit %0 > echo Done processing startup files %cfgfile% and %0 > echo Type HELP to get support on commands and navigation > echo. > echo Welcome to the FreeDOS 1.1 operating system (http://www.freedos.org) > > > ------------------------------------------------------------------------------------- > FDCONFIG.SYS > > !COUNTRY=001,858,C:\FDOS\BIN\COUNTRY.SYS > !SET DOSDIR=C:\FDOS > !LASTDRIVE=Z > !BUFFERS=20 > !FILES=40 > !MENUCOLOR=7,0 > MENUDEFAULT=1,5 > MENU 1 - Load FreeDOS with JEMMEX, no EMS (most UMBs), max RAM free > MENU 2 - Load FreeDOS with EMM386 (Expanded Memory) and SHARE loaded > MENU 3 - Load FreeDOS including XMGR XMS-memory driver > MENU 4 - Load FreeDOS without drivers > 123?DOS=HIGH > 12?DOS=UMB > 12?DOSDATA=UMB > 1?DEVICE=C:\FDOS\BIN\JEMMEX.EXE NOEMS X=TEST I=TEST NOVME NOINVLPG > 2?DEVICE=C:\FDOS\BIN\HIMEMX.EXE > 2?DEVICE=C:\FDOS\BIN\JEMM386.EXE X=TEST I=TEST I=B000-B7FF NOVME NOINVLPG > 3?DEVICE=C:\FDOS\BIN\XMGR.SYS > 3?SHELL=C:\FDOS\bin\4dos.com <http://4dos.com> C:\FDOS\bin /E:1024 > /P:C:\AUTOEXEC.BAT > 4?SHELL=C:\FDOS\BIN\COMMAND.COM <http://COMMAND.COM> C:\FDOS\BIN /E:1024 > /P=C:\AUTOEXEC.BAT > 12?SHELLHIGH=C:\FDOS\BIN\COMMAND.COM <http://COMMAND.COM> C:\FDOS\BIN > /E:1024 /P=C:\AUTOEXEC.BAT > > > ------------------------------------------------------------------------------ > Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San > Francisco, CA to explore cutting-edge tech and listen to tech luminaries > present their vision of the future. This family event has something for > everyone, including kids. Get more information and register today. > http://sdm.link/attshape > > > > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user > ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. 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