Console bug
What went wrong with the latest distribution?
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(1) Your scsi controler cannot dma to the mmu memory. Solution: binpatch _scsi_no_dma to 1. (2) You did not install the rootfs to the appropriate block. Solution: binpatch _sddebug to 1. This will output you, where NetBSD looks for the rootfs. Write down this number and filetodev the rootfs to the proper position. (Be sure to have reserved blocks = 0. hdtoolbox sometimes doesn't change this value correct)
For me none of the two worked. Michael L. Hitch seems to have found the problem as beeing something of 16 vs 32 bit word access problem of my '030. But I'd suggest, you try the first 2 ways before going more into this.