Can you give this a try?

best regards
Matthias


Index: pnpbios.c
===================================================================
RCS file: /cvsroot/syssrc/sys/arch/i386/pnpbios/pnpbios.c,v
retrieving revision 1.7
diff -c -r1.7 pnpbios.c
*** pnpbios.c	1999/12/13 20:12:22	1.7
--- pnpbios.c	2000/01/10 22:32:27
***************
*** 461,466 ****
--- 461,481 ----
  		goto dump;
  	}
  
+ 	if (r.nummem + r.numio + r.numirq + r.numdma == 0) {
+ #ifdef PNPBIOSVERBOSE
+ 		printf("%s", idstr);
+ 		if (r.longname)
+ 			printf(", %s", r.longname);
+ 		compatid = s.compatids;
+ 		while (compatid) {
+ 			printf(", %s", compatid->idstr);
+ 			compatid = compatid->next;
+ 		}
+ 		printf(" at %s index %d disabled\n", sc->sc_dev.dv_xname, idx);
+ #endif
+ 		return;
+ 	}
+ 
  	aa.pbt = 0; /* XXX placeholder */
  	aa.idx = idx;
  	aa.resc = &r;
***************
*** 511,516 ****
--- 526,532 ----
  static int pnp_newirq __P((struct pnpresources *, unsigned char *, size_t));
  static int pnp_newdma __P((struct pnpresources *, unsigned char *, size_t));
  static int pnp_newioport __P((struct pnpresources *, unsigned char *, 
size_t));
+ static int pnp_newfixedioport __P((struct pnpresources *, unsigned char *, 
size_t));
  
  /*
   * small ressource types (beginning with 1)
***************
*** 527,533 ****
  	{0, 0, 1}, /* start dep */
  	{0, 0, 0}, /* end dep */
  	{pnp_newioport, 7, 7}, /* io descriptor */
! 	{0, 3, 3}, /* fixed io descriptor */
  	{0, -1, -1}, /* reserved */
  	{0, -1, -1},
  	{0, -1, -1},
--- 543,549 ----
  	{0, 0, 1}, /* start dep */
  	{0, 0, 0}, /* end dep */
  	{pnp_newioport, 7, 7}, /* io descriptor */
! 	{pnp_newfixedioport, 3, 3}, /* fixed io descriptor */
  	{0, -1, -1}, /* reserved */
  	{0, -1, -1},
  	{0, -1, -1},
***************
*** 589,601 ****
  					mem->align = 0x10000;
  				mem->len = NEXTBYTE(p) << 8;
  				mem->len |= NEXTBYTE(p) << 16;
! 				SIMPLEQ_INSERT_TAIL(&r->mem, mem, next);
! 				r->nummem++;
! #ifdef PNPBIOSDEBUG
! 				if (mem->len == 0)
! 					printf("ZERO mem descriptor\n");
! #endif
! 				break;
  			case 0x02:
  				if (in_depends)
  					printf("ID in dep?\n");
--- 605,611 ----
  					mem->align = 0x10000;
  				mem->len = NEXTBYTE(p) << 8;
  				mem->len |= NEXTBYTE(p) << 16;
! 				goto gotmem;
  			case 0x02:
  				if (in_depends)
  					printf("ID in dep?\n");
***************
*** 630,642 ****
  				mem->len |= NEXTBYTE(p) << 8;
  				mem->len |= NEXTBYTE(p) << 16;
  				mem->len |= NEXTBYTE(p) << 24;
! 				SIMPLEQ_INSERT_TAIL(&r->mem, mem, next);
! 				r->nummem++;
! #ifdef PNPBIOSDEBUG
! 				if (mem->len == 0)
! 					printf("ZERO mem descriptor\n");
! #endif
! 				break;
  			case 0x06: /* 32bit fixed memory descriptor */
  				if (len != 9) {
  					printf("pnp_scan: bad mem32 desc\n");
--- 640,646 ----
  				mem->len |= NEXTBYTE(p) << 8;
  				mem->len |= NEXTBYTE(p) << 16;
  				mem->len |= NEXTBYTE(p) << 24;
! 				goto gotmem;
  			case 0x06: /* 32bit fixed memory descriptor */
  				if (len != 9) {
  					printf("pnp_scan: bad mem32 desc\n");
***************
*** 656,667 ****
  				mem->len |= NEXTBYTE(p) << 8;
  				mem->len |= NEXTBYTE(p) << 16;
  				mem->len |= NEXTBYTE(p) << 24;
! 				SIMPLEQ_INSERT_TAIL(&r->mem, mem, next);
! 				r->nummem++;
  #ifdef PNPBIOSDEBUG
- 				if (mem->len == 0)
  					printf("ZERO mem descriptor\n");
  #endif
  				break;
  			default:
  				printf("ignoring long tag %x\n", type);
--- 660,675 ----
  				mem->len |= NEXTBYTE(p) << 8;
  				mem->len |= NEXTBYTE(p) << 16;
  				mem->len |= NEXTBYTE(p) << 24;
! gotmem:
! 				if (mem->len == 0) { /* disabled */
  #ifdef PNPBIOSDEBUG
  					printf("ZERO mem descriptor\n");
  #endif
+ 					free(mem, M_DEVBUF);
+ 					break;
+ 				}
+ 				SIMPLEQ_INSERT_TAIL(&r->mem, mem, next);
+ 				r->nummem++;
  				break;
  			default:
  				printf("ignoring long tag %x\n", type);
***************
*** 751,756 ****
--- 759,770 ----
  {
  	struct pnp_irq *irq;
  
+ 	if (buf[0] == 0 && buf[1] == 0) { /* disabled */
+ #ifdef PNPBIOSDEBUG
+ 		printf("ZERO irq descriptor\n");
+ #endif
+ 		return (0);
+ 	}
  	irq = malloc(sizeof(struct pnp_irq), M_DEVBUF, M_NOWAIT);
  	irq->mask = buf[0] | (buf[1] << 8);
  	if (len > 2)
***************
*** 770,775 ****
--- 784,795 ----
  {
  	struct pnp_dma *dma;
  
+ 	if (buf[0] == 0) { /* disabled */
+ #ifdef PNPBIOSDEBUG
+ 		printf("ZERO dma descriptor\n");
+ #endif
+ 		return (0);
+ 	}
  	dma = malloc(sizeof(struct pnp_dma), M_DEVBUF, M_NOWAIT);
  	dma->mask = buf[0];
  	dma->flags = buf[1];
***************
*** 786,797 ****
--- 806,847 ----
  {
  	struct pnp_io *io;
  
+ 	if (buf[6] == 0) { /* disabled */
+ #ifdef PNPBIOSDEBUG
+ 		printf("ZERO io descriptor\n");
+ #endif
+ 		return (0);
+ 	}
  	io = malloc(sizeof(struct pnp_io), M_DEVBUF, M_NOWAIT);
  	io->flags = buf[0];
  	io->minbase = buf[1] | (buf[2] << 8);
  	io->maxbase = buf[3] | (buf[4] << 8);
  	io->align = buf[5];
  	io->len = buf[6];
+ 	SIMPLEQ_INSERT_TAIL(&r->io, io, next);
+ 	r->numio++;
+ 	return (0);
+ }
+ 
+ static int
+ pnp_newfixedioport(r, buf, len)
+ 	struct pnpresources *r;
+ 	unsigned char *buf;
+ 	size_t len;
+ {
+ 	struct pnp_io *io;
+ 
+ 	if (buf[2] == 0) { /* disabled */
+ #ifdef PNPBIOSDEBUG
+ 		printf("ZERO fixed io descriptor\n");
+ #endif
+ 		return (0);
+ 	}
+ 	io = malloc(sizeof(struct pnp_io), M_DEVBUF, M_NOWAIT);
+ 	io->flags = 1; /* 10 bit decoding */
+ 	io->minbase = io->maxbase = buf[0] | (buf[1] << 8);
+ 	io->align = 1;
+ 	io->len = buf[2];
  	SIMPLEQ_INSERT_TAIL(&r->io, io, next);
  	r->numio++;
  	return (0);