add_show_from_set ( add_set_cmd ("com4base", class_obscure, var_zinteger, (char *) &ports[3].base, "Set COM4 base i/o port address.", &setlist), &showlist);
deprecated_add_show_from_set (add_set_cmd ("com4base", class_obscure, var_zinteger, (char *) &ports[3].base, "Set COM4 base i/o port address.", &setlist), &showlist);
_initialize_ser_dos (void){  serial_add_interface (&dos_ops);  /* Save original interrupt mask register. */  icu_oldmask = inportb (ICU_MASK);  /* Mark fixed motherboard irqs as inuse. */  intrupts[0].inuse =		/* timer tick */    intrupts[1].inuse =		/* keyboard */    intrupts[2].inuse = 1;	/* slave icu */  add_show_from_set (		      add_set_cmd ("com1base", class_obscure, var_zinteger,				   (char *) &ports[0].base,				   "Set COM1 base i/o port address.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com1irq", class_obscure, var_zinteger,				   (char *) &ports[0].irq,				   "Set COM1 interrupt request.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com2base", class_obscure, var_zinteger,				   (char *) &ports[1].base,				   "Set COM2 base i/o port address.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com2irq", class_obscure, var_zinteger,				   (char *) &ports[1].irq,				   "Set COM2 interrupt request.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com3base", class_obscure, var_zinteger,				   (char *) &ports[2].base,				   "Set COM3 base i/o port address.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com3irq", class_obscure, var_zinteger,				   (char *) &ports[2].irq,				   "Set COM3 interrupt request.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com4base", class_obscure, var_zinteger,				   (char *) &ports[3].base,				   "Set COM4 base i/o port address.",				   &setlist),		      &showlist);  add_show_from_set (		      add_set_cmd ("com4irq", class_obscure, var_zinteger,				   (char *) &ports[3].irq,				   "Set COM4 interrupt request.",				   &setlist),		      &showlist);  add_info ("serial", dos_info,	    "Print DOS serial port status.");}