bussw man page on OpenBSD

bussw man page on OpenBSD

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BUSSW(4)	     OpenBSD Programmer's Manual (MVME88k)	      BUSSW(4)

NAME
     bussw - BusSwitch local peripheral bus interface

SYNOPSIS
     bussw0 at mainbus0 addr 0xfff00000

DESCRIPTION
     The bussw BusSwitch ASIC provides an interface from the MVME197's 64-bit
     wide system bus to the MC68040 compatible 32-bit wide local bus, to which
     the system's I/O devices, e.g. SCSI and Ethernet, are attached.

     It includes the following features:

	   o   Bus arbitration for the MC88110 bus
	   o   Seven level interrupt handler
	   o   Programmable map decoders
	   o   Write post buffers
	   o   Two tick timers
	   o   Four 32-bit general purpose registers

SEE ALSO
     intro(4), pcctwo(4), syscon(4)

OpenBSD 4.9			January 5, 2008			   OpenBSD 4.9

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