Recently, i met a game i never heard before called Thexder and wanted very much to play it in it's original platform, the PC-8801. Earlier today, i runned without problem Super Mario Bros Special and Macross in Retroarch's Quasi88 core but Thexder was stuck in a black screen. I tried to run in another emulator, M88x5 and a message saying "?TM error in 40" appeared. So i tried to run another version of Thexder called Thexder 88 and it runned without sound. All my bios are inside the emulator folder and i tried to run in both V1 and V2 So, how i make Thexder run and why these problems ocurred?