Configuring HP-UX For Peripherals

212 Chapter8

Conﬁguring Printers and Plotters

Conﬁguring a Printer Using HP-UX Commands

an error if an ASCII ﬁle is sent to it.)

Table C-3, “Minor Number for a SCSI Disk Device,”shows the bit

assignments for the CentIf driver. Bits 28-31 encode the handshake

mode, as follows:

1 Handshake using nACK and BUSY lines.

2 Handshake using BUSY line only.

3 Bidirectional read/write for ScanJet support.

4 Streaming mode. Setup = 1 usec, hold = 1 usec. This

mode is commonly used by Tektronix (Phasor and

others) printers.

5 Pulsed mode. Similar to mode 1, but nSTROBE is 1

usec.

6 Pulsed mode. Similar to mode 2, but nSTROBE is 1

usec.

Modes 5 and 6 are used to resolve deadlock situations that may occur in

modes 1 and 2. Products that work well with modes 5 and 6 are the HP

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family of printers, and some printers from NEC and Qume.

Note, these modes are for reference use only. No support (beyond mode 2

for HP LaserJet) is implied; however, the user may test these modes for

possible success with other vendor devices. For more information on the

Centronics interface, consult the cent (7) manpage.