ppi(4) - NetBSD Manual Pages

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PPI(4)               NetBSD/hp300 Kernel Interfaces Manual              PPI(4)


NAME

     ppi -- HP-IB printer/plotter interface


SYNOPSIS

     ppi0 at hpibbus0 slave 5


DESCRIPTION

     The ppi interface provides a means of communication with HP-IB printers
     and plotters.

     Special files ppi0 through ppi7 are used to access the devices, with the
     digit at the end of the filename referring to the bus address of the
     device.  Current versions of the autoconf code can not probe for these
     devices, so the device entry in the configuration file must be fully
     qualified.

     The device files appear as follows:

           "crw-rw-rw-  1 root      11,   0 Dec 21 11:22 /dev/ppi"


DIAGNOSTICS

     None.


SEE ALSO

     hp300/hpib(4)


BUGS

     This driver is very primitive, it handshakes data out byte by byte.  It
     should use DMA if possible.

NetBSD 10.1                    February 17, 2017                   NetBSD 10.1