Apple 310 manual Setting Device Parameters, Waittimeout, Setsoftwareiomode

C H A P T E R 2

LaserWriter Select 310 Software

waittimeout

Syntax – waittimeout int

Definition This operator is the wait timeout currently in effect, that is, it is the number of seconds the LaserWriter Select 310 printer will wait to receive additional characters from the host before it aborts the current job by executing a timeout. At the beginning of a job, the server initializes waittimeout to the default wait time returned by defaulttimeout. However, a PostScript language program may change it to any non-negative integer value. In interactive mode, the wait timeout is always 0.

Standard value: 40

Error stackoverflow

Setting Device Parameters

This section describes the compatibility operators that set Level 1 device parameters.

setsoftwareiomode

Syntax int setsoftwareiomode –

Definition This operator sets the binary protocol mode of the communications channel according to the value of int:

0binary protocol off

100binary protocol on

Binary protocol is standard in the LaserWriter Select 310 printer, and it should be used by any driver that sends binary data to the printer.

A driver that does not use the binary protocol and does not filter the back channel data when softwareiomode is 100 will see receive control characters as quoted characters. In particular, Control-Ds will be seen as Control-A/ASCII-D.

The softwareiomode operator does not need to be set outside the server loop in order to be compatible with other printer implementations of sofwareiomode. However changes to it do not take effect until the job that makes the changes is completed.

Standard value: 100

Errors rangecheck, stackunderflow, typecheck

32 Setting Compatibility Operators