MGNSC(4)             NetBSD/amiga Kernel Interfaces Manual            MGNSC(4)

NAME
     mgnsc -- Magnum low level SCSI interface

SYNOPSIS
     mgnsc0 at zbus0

DESCRIPTION
     The Amiga architecture uses a common machine independent scsi sub-system
     provided in the kernel source.  The machine independent drivers that use
     this code access the hardware through a common interface. (see
     scsibus(4)) This common interface interacts with a machine dependent
     interface, such as mgnsc, which then handles the hardware specific
     issues.

     The mgnsc interface handles things such as DMA and interrupts as well as
     actually sending commands, negotiating synchronous or asynchronous trans-
     fers and handling disconnect/reconnect of SCSI targets.  The hardware
     that mgnsc uses is based on the NCR53c710 SCSI chip.

DIAGNOSTICS
     mgnsc%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x  The scsi operation
     %s was aborted due to error.  Dstat, sstat and sbcl are registers within
     the NCR53c710 SCSI chip.

     siop id %d reset  The NCR53c710 SCSI chip has been reset and configure at
     id %d.

     SIOP interrupt: %x sts %x msg %x sbcl %x  The NCR53c710 SCSI chip has
     interrupted unexpectedly.

     SIOP: SCSI Gross Error  The NCR53c710 SCSI chip has indicated that it is
     confused.

     SIOP: Parity Error  The NCR53c710 SCSI chip has indicated that it has
     detected a parity error on the SCSI bus.

SEE ALSO
     scsibus(4)

HISTORY
     The mgnsc interface first appeared in NetBSD 1.0

NetBSD 5.0_STABLE               August 31, 1994              NetBSD 5.0_STABLE
