This indicates a region mismatch. The sega101.bin file will only boot Japanese region games ( .cue files pointing to Japanese ISOs). If you wish to play North American or European games, you will need the bios_CD_U.bin (Sega CD US) and bios_CD_E.bin (Mega-CD EU) variants respectively.
Compare your output to the verified hash table above. If it matches – you are good to go. bios sega101bin verified