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

NAME
     empb -- ELBOX Mediator 1200 PCI bridge driver

SYNOPSIS
     empb0 at zbus0
     emmem0 at zbus0
     empm0 at zbus0
     pci* at empb0
     options PCI_NETBSD_CONFIGURE

DESCRIPTION
     The empb driver provides support for the PCI bus present on Mediator 1200
     bridge for Amiga 1200.

HARDWARE
     The empb driver supports the following hardware:

           ELBOX Mediator PCI 1200

           ELBOX Mediator PCI 1200 LT2

           ELBOX Mediator PCI 1200 LT4

           ELBOX Mediator PCI 1200 SX

           ELBOX Mediator PCI 1200 TX

DIAGNOSTICS
     empb: linear space mapping might not work  The PCI card driver is trying
     map memory space with the BUS_SPACE_MAP_LINEAR flag.  Due to the windowed
     design of Mediator, it is expected to fail miserably if normal memory
     space access methods (e.g., pointer dereference) are used instead of
     bus_space(9) methods.

     empb%d: couldn't find memory space, check your WINDOW jumper  PCI memory
     space access is disabled on a hardware level.  The empb driver will work
     anyway, but only PCI I/O space will be accessible.  To enable memory
     space set the WINDOW jumper to 4MB or 8MB.

SEE ALSO
     em4k(4), mppb(4), p5pb(4), pci(4)

HISTORY
     The empb device first appeared in NetBSD 7.0.

AUTHORS
     The empb driver was written by Radoslaw Kujawa
     <radoslaw.kujawa@gmail.com>.  It was developed using information obtained
     through reverse engineering by Frank Wille and Radoslaw Kujawa.  The
     authors have no access to official documentation (which is only available
     under NDA).

CAVEATS
     Mediator ZIV might work but is untested.

BUGS
     DMA to host memory is not supported.  This is a hardware limitation.  It
     is possible to implement DMA through bounce buffers in graphics card mem-
     ory, but this needs further research.

NetBSD 6.0                     January 29, 2012                     NetBSD 6.0

You can also request any man page by name and (optionally) by section:

Command: 
Section: 
Architecture: 
Collection: 
 

Use the DEFAULT collection to view manual pages for third-party software.


©1994 Man-cgi 1.15, Panagiotis Christias <christia@softlab.ntua.gr>
©1996-2014 Modified for NetBSD by Kimmo Suominen