DisneyRob, Any progress on this?
I wanted to test this on my end but don't have any DreamCast files to work with. Along with that, I've never used NullDC. No biggie. We know this has to work... somehow.
(1st, forgive my ignorance for asking ignorant questions)
Looking around about NullDC, could the fullscreen thing be something as simple as editing the nullDC.cfg file? Changing the default "Fullscreen=0" to "Fullscreen=1"
[nullDC_GUI]
Fullscreen=1
If not, maybe try running an ahk script on it's own (outside of MA). i.e. double-click in Explorer. Something like RunMyGame.ahk
#SingleInstance force
Run, "F:\emulators\nullDC_Win32_Release-NoTrace.exe -config ImageReader:DefaultImage=F:\roms\dreamcast\MyGame"
Sleep, 200
send, !{Enter}
Sleep, 200
send, !{Enter}
ExitApp
My thinking being 1st making sure a script will work.
Also, it sounds like for this command line, the .cfg should also have the following changes:
[nullDC]
Emulator.AutoStart=1
Emulator.NoConsole=1
[nullDC_GUI]
Fullscreen=1
[ImageReader]
LoadDefaultImage=1