Functions in src/od-acorn

• check_sound_buffers src/od-acorn/sound.h:20
• close_joystick src/od-acorn/joystick.c:30
• close_sound src/od-acorn/sound.c:54
• flush_sound_buffer src/od-acorn/sound.h:14
• init_joystick src/od-acorn/joystick.c:25
• init_sound src/od-acorn/sound.c:27
• read_joystick src/od-acorn/joystick.c:19