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Communication channels – Apple LaserWriter Select 310 Printer User Manual

Page 5

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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