isapnp_read_word
ret = isapnp_read_word(ISAPNP_CFG_PORT + (i << 1));
ret = isapnp_read_word(ISAPNP_CFG_MEM + (i << 3)) << 8;
ret = isapnp_read_word(ISAPNP_CFG_IRQ + (i << 1)) >> 8;