in vax/sbi.c, the sbi_attach routine makes use of NEXA8600. The sbi.c appears to be used by the VAX8600 and VAX780. If the kernel is built with VAX780 and not VAXANY or VAX8600, this will result in an error. The value NEX780 appears to be defined to the same value as NEXA8600 for this purpose. Tim N.