tc921x_read_addr  107 dev/ic/tc921x.h u_int32_t	tc921x_read_addr(struct tc921x_t *, u_int8_t);
tc921x_read_addr  235 dev/isa/sf16fmr.c 	return tc921x_decode_freq(tc921x_read_addr(c, 0xD1));