Apple 310 manual Communication Channels

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	setcacheparams		37
	setpacking	38
	Printer Error Parameter			38
	printererror	39
	PostScript Language Changes			39
	Packed Arrays	40
	Packed Arrays Versus Ordinary Arrays					40
	Creating Packed Arrays			40
	Immediately Evaluated Names				41
	Changes in Font Cache Operation				42
	Device Resolution Images			42
	End-of-Line Recognition			43
	New Operators	44
	TrueType Fonts	44
Chapter 3	Communication Channels				45

	Serial Communication		46
	Baud Rates	46
	Parity Settings	47
	Flow Control	47

DTR Flow Control		47
XON/XOFF Flow Control			48
SCC Operator Encoding		48
Communication Protocols		49
Simple Communication Protocol			49
Binary Communication Protocol			50
Communicating with an IBM PC			52
Parallel Interface	52
Serial Interface	53
DTR Flow Control for PC Communication				53
XON/XOFF Flow Control for PC Communication					54
Communication Dynamics		54
Status Queries and Spontaneous Messages				55

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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 What This Note Contains About This NoteOther Reference Material Conventions Used in This NoteApda For More InformationPage LaserWriter Select Hardware1 LaserWriter Select 310 Hardware ROM Serial Port for RS-232C Devices Communication Ports2An 8-pin serial port connector Centronics Parallel ConnectorPstrobe Signal Status Lights ROM Capability Memory CapabilitiesDram Expansion Batch ModeBasic Operation Types Interactive ModePaper Handling 7Paper handling options Page LaserWriter Select 310 Software PostScript Interpreter Software OverviewAdobe PostScript Programming Language Types LaserWriter Select 310 DriverSelects the paper tray containing A4-size paper and sets Product Strings Software ParametersCommunication Device Parameters Compatibility OperatorsStatusdict Setting Compatibility Operators Device Checkpassword Setting System ParametersDefaulttimeouts IdlefontsProduct PrinternameProductA RamsizeSetidlefonts SetdefaulttimeoutsSetpassword Defaultmultipurposetraysize Setting Page Device ParametersDefaultpapertray SetprinternameManualfeed ManualfeedtimeoutMargins PagestackorderPapertray SetdefaultmultipurposepapertraysizePapersize Setmargins SetdefaultpapertraySetdostartpage Setpapertray SetpagestackorderSetpagetype Jobtimeout Setting User ParametersSetjobtimeout JobnameSetsoftwareiomode Setting Device ParametersWaittimeout Packetbackchannel Setting Communication ParametersSoftwareiomode Setpacketbackchannel SccbatchDarkness Setting Engine Device ParametersSetsccbatch Setdarkness Setting Extensions to PostScript LevelCurrentcacheparams CurrentpackingSetcacheparams PackedarraySetpacking Printer Error ParameterPostScript Language Changes PrintererrorCreating Packed Arrays Packed ArraysPacked Arrays Versus Ordinary Arrays Immediately Evaluated Names Changes in Font Cache Operation Device Resolution ImagesEnd-of-Line Recognition New Operators TrueType FontsCommunication Channels Baud Rates Serial CommunicationDTR Flow Control Parity SettingsFlow Control XON/XOFF Flow Control SCC Operator EncodingSimple Communication Protocol Communication ProtocolsBinary Communication Protocol SOH CTL-A Parallel Interface Communicating with an IBM PCDTR Flow Control for PC Communication Serial InterfaceXON/XOFF Flow Control for PC Communication Communication DynamicsStatus Queries and Spontaneous Messages Errorerror OffendingCommand operator %%