nec86_softc
nec86_ym_write(struct nec86_softc *sc, u_int8_t index, u_int8_t data) {
nec86_attachsubr(struct nec86_softc *sc)
void nec86_ym_read(struct nec86_softc *, u_int8_t, u_int8_t *);
void nec86_ym_write(struct nec86_softc *, u_int8_t, u_int8_t);
nec86_ym_read(struct nec86_softc *sc, u_int8_t index, u_int8_t *data) {
void nec86_attachsubr(struct nec86_softc *);
sizeof(struct nec86_softc), necsb_match, necsb_attach
struct nec86_softc *nsc = (struct nec86_softc *)self;