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README revision 1.3 
      1 $NetBSD: README,v 1.3 1996/11/19 20:58:32 gwr Exp $
      2 
      3 NetBSD/sun3 supports the following busses:
      4 
      5 Bus:
      6 mainbus -  An imaginary bus on which the other busses all reside.
      7 
      8 obio	-  Devices on the motherboard, accessed by having their "registers"
      9 	   mapped into the kernel's virtual address space
     10 obmem	-  Devices on the motherboard that are mapped into main memory
     11 	   by the hardware.  Only true of some framebuffers.
     12 vmes	-  VME D16 space
     13 vmel	-  VME D32 space
     14 
     15 Devices supported:
     16 
     17 'obio' Bus: 
     18 Device	Type    Description
     19 ---------------------------------------------------------------------------
     20 zs	CHAR	zilog 8530 serial ports; used for serial ports, keybd, mouse
     21 le	IFNET	lance ethernet driver
     22 
     23 XXX - very much incomplete...
     24