Does not seem to apply on 4.1-RELEASE, so ignored until I use it on host=desk

Extra info for exploring unknown serial cards

*** old/src/sys/i386/isa/isa.c	Sun Nov 29 16:42:40 1998
--- new/src/sys/i386/isa/isa.c	Sun May 23 14:12:21 1999
***************
*** 1077,1079 ****
--- 1077,1100 ----
  
  	return (table);
  }
+ 
+ #ifdef COM_MULTIPORT_DEBUG	/* { by jhs@ */
+ 	void
+ print_isadev(i_dev)
+ 	struct isa_device	*i_dev ;
+ 	{
+ 	printf("Base i/o address\t\t0x%x\n",	(int)	i_dev->id_iobase );
+ 	printf("Interrupt request\t\t%u\n",	(unsigned)	i_dev->id_irq );
+ 	printf("DMA request\t\t\t%d\n",		(int)	i_dev->id_drq );
+ 	printf("Physical i/o memory address on bus (if any)\t0x%lx\n",
+ 						(long unsigned)	i_dev->id_maddr );
+ 	printf("Size of i/o memory\t\t0x%x\n", i_dev->id_msize );
+ 	printf("Interrupt interface routine\t0x%lx\n",	i_dev->id_intr );
+ 	printf("Unit number (for control registers ?)\t%d\n",		i_dev->id_unit );
+ 	printf("Flags\t\t\t\t0x%x\n",		i_dev->id_flags );
+ 	printf("Scsi id if needed\t\t%d\n",	i_dev->id_scsiid );
+ 	printf("Device is present\t\t0x%x\n",	i_dev->id_alive );
+ 		/*id_alive reports 0 for a sio without an interrupt register,
+ 			& 8 for a sio with */
+ 	}
+ #endif			/* } */