In general, the information here supersedes corresponding material in Appendix
D of the PostScript Language Reference Manual (copyright 1985, Adobe Systems
Inc., Addison-Wesley Publishing Co., ISBN 0-201-10179-3); you should refer
there for further information.
The LaserWriter's serial communication capability has been enhanced. The
maximum baud rate has been increased from 9600 to 57600 bits per second.
While the default mode of operation of the LaserWriter's serial I/O remains
the same as the original LaserWriter, the new capabilities must be explicitly
enabled if desired. This is accomplished by executing 'setsccbatch' or
'setsccinteractive' operators as described in the PostScript Language
Reference Manual.
The baud operand of 'setsccbatch' or 'setsccinteractive' may now be any
positive integer less than 100000. The hardware can acheive only certain baud
rates; other values will be rounded to the nearest achievable one. Above 9600
baud, the achievable rates are:
10473, 11520, 12800, 14400, 16457, 19200, 23040, 28800, 38400, and 57600.
Of these,19200 is the most likely to be supported by the host operating
systems.