Thanks again to Martin Husemann. It was a problem with the default iobase,
so setting :
options PCIC_ISA_ALLOC_IOBASE=0x500
options PCIC_ISA_ALLOC_IOSIZE=0xbff
in my kernel config made it work.
J
--
My other computer also runs NetBSD
http://www.netbsd.org/