Wing Commander III Jemm386 crash on FreeDOS 1.4 \ VOGONS

Wing Commander III Jemm386 crash on FreeDOS 1.4

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First post, by eton975

eton975 Offline

Rank Newbie

Rank: Newbie
Posts: 51
Joined: 2017-05-19, 03:32

I have been having an issue (pictured) trying to run Wing Commander III on an AM486DX2-80 @ 66MHz system with ISA VGA, on an Octek Hippo 15 with UMC chipset and 16MB RAM, whilst FreeDOS 1.4's Jemm386 is loaded. During startup of the game, anywhere from 1 to 6 dots get printed to the screen before Jemm386 complains about an exception 06 at F000:00000000 and the game will not load any further.

The game does seem to work when I choose the "Load FreeDOS low in safe mode" option, and does not work with JemmEx at all, complaining about UMBs with that menu option.

Wondering if anyone else has experienced this and why it happens.

Reply 1 of 1, by Matchstick

Posted on Yesterday, 23:56

Matchstick Offline

Rank Newbie

Rank: Newbie
Posts: 71
Joined: 2021-11-30, 17:27

Per Freedos:

HIMEMX should be loaded before.
Load JEMM386 as DEVICE=JEMM386.EXE in CONFIG.SYS / FDCONFIG.SYS
(although it is an ".exe"-file!).
For more informations see:
https://github.com/Baron-von-Riedesel/Jemm/tree/master/Html
OR:
https://gitlab.com/FreeDOS/base/jemm/-/tree/master/DOC/JEMM
OR:
C:\FREEDOS\DOC\JEMM\readme.txt (can be installed with FD live CD).
Examples:
IN CONFIG.SYS / FDCONFIG.SYS:
files=20
buffers=30
lastdrive=Z
break=off
DOS=high,umb
device=C:\FREEDOS\BIN\himemx.exe
device=C:\FREEDOS\BIN\jemm386.exe NOEMS
shellhigh=C:\FREEDOS\BIN\command.com C:\FREEDOS\BIN /E:1024
/p:C:\fdauto.bat

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