Good day,
I did some searching but couldn't find anything quite like what I'm experiencing. I've got the Collectors Edition CD-ROM on real hardware, PS/2 Mouse and a newer PS/2 keyboard on an AT adapter.
When I start the game, everything seems to work fine. I can get through the menus easy enough. I go to training simulator, load a scenario. I can fly with the mouse and even shoot.

However, the moment I touch the keyboard, the game freaks out and almost starts treating the mouse as a very bad joystick.
I installed the joystick patch, didn't seem to make a difference.

I remember playing this game using a mouse on Windows XP years ago, but it seems almost everyone agrees to just use a joystick with this game. DOSBOX threads show that the game is picky about sticks and axis', but I don't even have one plugged in. Is there something weird with my system's handling of the PS/2 port and the mouse, or is it the game?