ppi man page on 4.4BSD

ppi man page on 4.4BSD

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

NAME
     ppi — HP-IB printer/plotter interface

SYNOPSIS
     device ppi0 at hpib0 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
     hpib(4).

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

BSD				 June 9, 1993				   BSD

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