Apple 310 manual Software Overview, Adobe PostScript Programming Language, PostScript Interpreter

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C H A P T E R 2

LaserWriter Select 310 Software

This chapter describes the LaserWriter Select 310 software.

It provides an overview of software features, including the Adobe PostScript Programming Language, the PostScript interpreter, the LaserWriter Select 310 driver, and page types.

It defines the software parameters that enable you to set up and configure the LaserWriter Select 310 printer. They include, system parameters, page device parameters, user parameters, device parameters, communication parameters, engine device, extensions to PostScript Level 1, and the printer error parameter.

It also explains how to set these parameters.

It describes changes made to the PostScript language that impact the LaserWriter Select 310 printer including the use of packed arrays, use of immediately evaluated names, changes in the operation of the font cache, new general sampling and halftone techniques, and a different method of handling end-of-line recognition.

Software Overview

This section gives you an overview of the LaserWriter Select 310 software features, including:

the Adobe PostScript Programming Language

the PostScript interpreter

the LaserWriter Select 310 driver

page types

product strings

Adobe PostScript Programming Language

The LaserWriter Select 310 printer executes descriptions written in the PostScript language. The version of the PostScript language used has features and capabilities that might not be present in other PostScript output devices. This developer note describes the supplementary PostScript language features of the LaserWriter Select 310 printer. You should use the note in conjunction with the PostScript Language Reference Manual, first edition, published by Addison-Wesley.

PostScript Interpreter

You may access the special features of the LaserWriter Select 310 printer by executing special PostScript operators that exist only in the printer’s interpreter, PostScript interpreter version 52.5.

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Software Overview

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Contents Apple LaserWriter Select 310 Printer Limited Warranty on Media and Replacement Contents Page Communication Channels Page Figures and Tables Page About This Note What This Note ContainsConventions Used in This Note Other Reference MaterialFor More Information ApdaPage LaserWriter Select Hardware1 LaserWriter Select 310 Hardware ROM Communication Ports Serial Port for RS-232C DevicesCentronics Parallel Connector 2An 8-pin serial port connectorPstrobe Signal Status Lights Memory Capabilities ROM CapabilityBasic Operation Batch ModeDram Expansion Interactive Mode TypesPaper Handling 7Paper handling options Page LaserWriter Select 310 Software Adobe PostScript Programming Language Software OverviewPostScript Interpreter LaserWriter Select 310 Driver TypesSelects the paper tray containing A4-size paper and sets Software Parameters Product StringsCommunication Device Parameters Compatibility OperatorsStatusdict Setting Compatibility Operators Device Setting System Parameters CheckpasswordDefaulttimeouts IdlefontsPrintername ProductProductA RamsizeSetpassword SetdefaulttimeoutsSetidlefonts Setting Page Device Parameters DefaultmultipurposetraysizeDefaultpapertray SetprinternameManualfeedtimeout ManualfeedMargins PagestackorderPapersize SetdefaultmultipurposepapertraysizePapertray Setdostartpage SetdefaultpapertraySetmargins Setpagetype SetpagestackorderSetpapertray Setting User Parameters JobtimeoutSetjobtimeout JobnameWaittimeout Setting Device ParametersSetsoftwareiomode Softwareiomode Setting Communication ParametersPacketbackchannel Sccbatch SetpacketbackchannelSetsccbatch Setting Engine Device ParametersDarkness Setting Extensions to PostScript Level SetdarknessCurrentcacheparams CurrentpackingPackedarray SetcacheparamsPrinter Error Parameter SetpackingPrintererror PostScript Language ChangesPacked Arrays Versus Ordinary Arrays Packed ArraysCreating Packed Arrays Immediately Evaluated Names Device Resolution Images Changes in Font Cache OperationEnd-of-Line Recognition TrueType Fonts New OperatorsCommunication Channels Serial Communication Baud RatesFlow Control Parity SettingsDTR Flow Control SCC Operator Encoding XON/XOFF Flow ControlCommunication Protocols Simple Communication ProtocolBinary Communication Protocol SOH CTL-A Communicating with an IBM PC Parallel InterfaceSerial Interface DTR Flow Control for PC CommunicationCommunication Dynamics XON/XOFF Flow Control for PC CommunicationStatus Queries and Spontaneous Messages Errorerror OffendingCommand operator %%