frabadabene: When you finish tha game, the character T17 is unlocked, but if you play the game with this character, the game crashes before the end of the game,....

I was able to complete the game with savestates under DOSBOX-X...
Using settings such as:
[sblaster]
sbtype = sb16
sbbase = 220
irq = 5
dma = 7
hdma = 0

[autoexec]
# Lines in this section will be run at startup.
# You can put your MOUNT lines here.
@echo off
mount C ".."
imgmount d "UBB.DAT" -t iso
c:
cls
cd ultima~1
UBBFIX.COM
ULTIMATE.EXE

Does anyone have any info for irq settings or 'dosbox irq hacks' for this game? Having trouble getting sound effects to work now... using correct exiting: Ctrl+F9, restarting computer helped. op having problems...

No, again the problem, this problem has not solution, we have to wait OFFICIAL DosBox new realese, sorry.