WESC(4)               OpenBSD Programmer's Manual (Amiga)              WESC(4)

NAME
     wesc - Warp Engine low level SCSI interface

SYNOPSIS
     wesc0 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 in-
     terface, such as wesc, which then handles the hardware specific issues.

     The wesc 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 wesc uses is based on the NCR53c710 SCSI chip.

HARDWARE
     The wesc interface supports the following Zorro III expansion cards:

           WARP ENGINE  MacroSystem Development Warp Engine internal SCSI,
                        manufacturer 2203, product 19

DIAGNOSTICS
     wesc%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 reset0  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 in-
     terrupted 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 de-
     tected a parity error on the SCSI bus.

SEE ALSO
     scsibus(4)

HISTORY
     The wesc interface first appeared in NetBSD 0.9A

OpenBSD 2.9                     August 31, 1994                              1
