NAME

mb − Multibus

SYNOPSIS

controller mb0 at nexus ?

DESCRIPTION

The mb device is the driver for the Intel Multibus(R), which provides support functions to the various devices which can reside there.  It vectors interrupts to the Multibus devices according to the priority level of the interrupt received and queues requests for dma when there are insufficient resources to service the request or to allow certain dma’s to proceed exclusively.  It also implements byte swapping to/from deficient devices. 

DIAGNOSTICS

None. 

SEE ALSO

ar(4S), cg(4S), ip(4S), ms(4S), oct(4S), tm(4S), vp(4S), xy(4S), zs(4S)
Intel Multibus(R) Specification, Order Number 9800683-04 (Sun 800-1057-01)

Sun System Release 1.0  —  11 August 1983