-void emul_video(uint8_t *rgb, uint8_t *memory, uint16_t render_palette[], int width, int height, int diwstart, uint16_t *io, int start, int stop, int double_size);
+int emul_video(uint8_t *rgb, uint8_t *memory, uint16_t render_palette[], int width, int height, int diwstart, uint16_t *io, int start, int stop, int double_size);