What are the various configuration parameters for the command line? I'm looking specifically for anything that disables the memory expansion pack for games that it causes glitches on. (Star Wars Episode I Racer, etc.)
To disable the expansion pack, you should first run the emulator with '--saveoptions' to write the auto-detected input configuration into the main config file, and then you can later use "--set Input-SDL-Control1[plugin]=1" to disable the mempak on controller 1. You can set this value to '2' to use the mem pack, or '5' for the rumble pack.
Thanks for the reply! However, I mean to refer to the internal memory expansion pak (http://en.wikipedia.org/wiki/Nintendo_64_accessories#Expansion_Pak) which makes some games run faster and allows them to use higher resolutions and textures. For some reason, it appears that this breaks a few games in the latest version of Mupen64. Star Wars Episode I Racer, to be sure. See this thread: