NAME
ppi —
HP-IB printer/plotter
interface
SYNOPSIS
ppi0 at hpibbus0 slave 5
DESCRIPTION
Theppi 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
BUGS
This driver is very primitive, it handshakes data out byte by byte. It should use DMA if possible.