NAME

/dev/centrnix − Centronix Parallel Port Driver

DESCRIPTION

The Centronix driver provides an interface to a user program.  The driver can be accessed via the open(2),write(2), and close(2) system calls.  Data is passed transparently to the device connected to the parallel port, meaning that no translation of any sort is performed on the data. 

Because the Tektronix 4693D color plotter uses the signals differently from other Centronix printers, the driver provides two different classes to the user program.  If the driver is opened with a minor device number with the 0x10 (hex 10) bit on, it is opened in Tektronix mode.  Otherwise it is opened in normal mode.  If a Tektronix 4693D is connected to the parallel port, then the Tektronix mode must be used. 

September 02, 1992