Unformatted Printout - IBM 3708 Description

The following items describe how the 3708 causes data to print for a formatted
printout.
Note: The newline function referred to below has three steps:
Unformatted Printout
1. Carriage Return (X' OD ').
2. Line Feed (X'OA').
3. If a carriage return delay is specified for the port to which the printer is
attached, a number of ASCII DEL characters (X'7F') are sent to the
printer. The number of DEL characters is determined by multiplying the
configured carriage-return-delay value by the ratio of the current column
to the platen width.
• A newline is performed at the beginning of a formatted printout. This can be
suppressed by setting nonstandard operating bit 13 to 1.
• A newline function is performed by the 3708 when a Begin Bracket is received
for the printer session.
Note: This newline can be suppressed by configuring the 3708 option
PERFORM NEWLINE AT BEGIN BRACKET to N.
• New Line (NL), Carriage Return (CR), and End of Message (EM) print as
blanks and are otherwise ignored.
• A Form Feed (FF) order is valid in any position and causes the 3708 to send a
FF character (X' OC') to the printer. If a form feed delay is specified for the
port, that number of ASCII DEL characters (X '7F') are sent.
• After printing the last printable character on a line (determined by the print line
format specified in the WCC), the 3708 performs a newline function.
• Null characters, attribute characters, or alphameric characters in nonprint or
nondisplay fields are treated as follows:
If embedded in a print line (that is, they appear before the last printable
character of the line), they print as blanks.
If they constitute an entire line, the line is not printed at all.
Note: A blank line is printed if nonstandard operating bit 12 is
set to 1.
• At the end of a printout, a newline function is performed.
If bits 2 and 3 of the WCC are set to 00, an unformatted printout occurs. The
platen length that has been configured for the 3708 port to which the printer is
attached is used for the line length.
Printing starts from buffer location 0 and ends with the last position of the buffer.
Printing can also end when the 3708 encounters an EM print order. If the print is
ended with an EM order, the 3708 performs a newline function if the print element
is not already positioned at the beginning of a line.
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IBM 3708
Description