Star Trek 25th Anniversary, dosbox conf file tweaks SO FAR (a work in progress, I am a noob):
Using (vanilla build) dosbox 0.74, running on Win 7 64-bit on an i3-4010 with intel integrated HD4400 laptop.
Dosbox and the game are installed on C:\oldgames - not the windows programs folder)
[sdl]
fullscreen=true When first launches, fullscreen or not
fulldouble=false
fullresolution=1366x768 Put your screensize here, or 0x0
windowresolution=1366x768 or whatever your screensize is. I don't know
output=ddraw Most win 7 and 8 machines do fine with this. If not, overlay. Don't use surface.
autolock=false Because I prefer the cursor NOT get locked inside the window when it windows; some prefer "true".
...left the rest with the defaults in this section
[dosbox]
...left all as defaults
[render]
frameskip=0 No need to change this from default, most games (but not all)
aspect=true keeps original aspect ratio so picture doesn't distort widthwise
scaler=hq3x To my eyes this one looked best of the various options for this parameter
[cpu]
cycles=fixed 13000 Seemed to run nice this way.
...left all else with defaults
[mixer]
nosound=false
rate=44100
blocksize=1024
prebuffer=20
[midi]
mpu401=intelligent
mididevice=default
midiconfig=
[sblaster]
sbtype=sbpro1 Probably would work with sbpro2 or sb16; this is what sounded good to my ears after all night fooling with settings
sbbase=220
irq=7
dma=1
hdma=5
sbmixer=true
oplmode=auto
oplemu=default
oplrate=44100
[gus]
gus=false
....the rest default
[speaker]
pcspeaker=true
pcrate=44100
...the rest defaults, or tandy & disney off
Everything else left default
No added autoexec lines at bottom.
I am using Launchbox version 3.6 as a front-end because it has a nice user launch GUI (boxart, game info, etc.) after you set up the game's dosbox.conf (I set up a dosbox.conf for each game so I can tweak away)... The player just has to click on the boxart in the GUI, and not use a dos command window. This frontend supports multi-cd dos games, and also allows scummvm games to be hooked in.