4.4BSD/usr/share/man/cat4/vax/np.0

NP(4)             BSD Programmer's Manual (VAX Architecture)             NP(4)

NNAAMMEE
     nnpp - Interlan Np100 10 Mb/s Ethernet interface

SSYYNNOOPPSSIISS
     ddeevviiccee nnpp00 aatt uubbaa00 ccssrr 116666000000 vveeccttoorr nnppiinnttrr

DDEESSCCRRIIPPTTIIOONN
     The nnpp device provides access to an Interlan Np100 Ethernet interface for
     control functions.

     This interface is unusual in that it requires loading firmware into the
     controller before it may be used as a network link-level interface.  This
     is accomplished by opening a character special device, and writing data
     to it.  It is also possible to do post-mortem debugging of firmware fail-
     ures by reading the local memory of the device.

     Multiple control processes are allowed by opening separate minor devices;
     secondary interfaces are specified by shifting the interface number by 4
     bits.

     The device also responds to commands passed through the driver by the
     following ioctl(2)s:

     NPRESET    kills off all active network processes.

     NPSTART    begins execution of the board at the specified address (usual-
                ly 0x400).

     NPNETBOOT  downloads the image from a server on the network.  [Contact
                MICOM-INTERLAN for details.]

DDIIAAGGNNOOSSTTIICCSS
     nnpp%%dd:: BBaadd MMaaiinntteennaannccee ccoommmmaanndd:: %%xx!!  An invalid ioctl was passed to the np
     driver.

     nnpp%%dd:: PPaanniicc NNPP110000 bbaadd bbuuffffeerr cchhaaiinn..  An error occurred in an read or
     write operation causing it to run out of buffers before it finished the
     operation.  This indicates a kernel failure rather than a device failure.

     NNPP110000 uunniitt %%dd nnoott ffoouunndd!!  A failure occurred during initialization, such
     that the unibus address expected for the board was found to be bad.
     Probably indicates hardware problems with the board, as do the following:

           NNPP110000 UUnniitt %%dd ttiimmeedd oouutt!!
           NNPP110000 UUnniitt %%dd FFaaiilleedd ddiiaaggnnoossttiiccss!!
           SSttaattuuss ffrroomm CCSSRR00:: %%xx..

     PPaanniicc ffrroomm NNPP110000 uunniitt %%dd!!
     PPaanniicc MMeessssaaggee:: %%ss..  An occurrence on the board was deemed serious enough
     to have the vax print it out.

     NNPP110000 uunniitt ##%%dd aavvaaiillaabbllee!!  The board was successfully loaded and started.

     nnpp%%dd:: BBaadd RReeqq:: %%xx..  The board made a maintenance request to the vax that
     it did not understand.

     nnpp%%dd:: NNoo mmoorree rroooomm oonn CCoommmmaanndd QQuueeuuee!!  The np driver allowed an internal
     resource to be exhausted.  This should never happen.

     There are 110 other diagnostic messages that can be enabled by setting
     bits in a debugging mask.  Consult the driver for details.

SSEEEE AALLSSOO
     netintro(4),  inet(4),  arp(4),  ix(4)

HHIISSTTOORRYY
     The nnpp driver appeared in 4.3BSD.

4.2 Berkeley Distribution        June 5, 1993                                2