IBM 4400 manual Carriage Return

Chapter 3 Configuring the XQ Emulation with Control Codes

Carriage Return

ASCII Code CR

Hex Code 0D

Dec Code 13

Purpose Positions the logical print head at the left margin (resets the

memory pointer to the first character position).

Comment The printer can be configured to perform a carriage return only (CR = CR only), or a carriage return plus a line feed function (CR = CR + LF).

A CR = CR configuration enables underline, add, delete, and edit functions, but the host computer must send a separate line feed code to print the data and change the vertical position. The character position indicator is positioned at character column one. Subsequent printable data preceding a paper motion command replace previous printable data (including underlines). Two exceptions apply:

•Subsequent underlined characters (hex 5F) overlay the previous data.

•Subsequent space characters (hex 20) only index the character position indicator to the right.

This code can occur at any place in the datastream and is acted upon immediately.

With CR = CR + LF, the underline, add, delete and edit functions are disabled, and the code is processed as a line feed. See the Line Feed command description on page 70 for more information.

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