>I have two theories:
>	(a) The system gets stuck due to an unbalanced splbio() call.
>	(b) The ahc driver sets up some sort of PCI DMA parameter that
>	    loses with 486 PCI chipsets.  (Note, I have not heard any
>	    reports of this problem on Pentiums or greater, and have
>	    not been able to reproduce the problem on an AlphaServer
>	    8200 with an ahc connected to several RAID boxes doing
>	    performance measurements).
>Given that the only two reported incidents happen on 486 PCI systems, I
>am inclined to go with (b).

Oops.  This is a Pentium-class machine.  It's a Cyrix 6x86 P166+
(i.e. 133MHz) chip in a Triton-1 (Asus P55TP4N) motherboard.  Since
it's still NetBSD 1.2, it doesn't know how to identify the Cyrix chip,
correctly.

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  Michael L. VanLoon                           michaelv@MindBender.serv.net
      Contract software development for Windows NT, Windows 95 and Unix.
             Windows NT and Unix server development in C++ and C.

        --<  Free your mind and your machine -- NetBSD free un*x  >--
    NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
        Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
    NetBSD ports in progress: PICA, others...
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