IBM 4840-563 System Reference - Page 65

command is as follows: 1B 5C 3F 4C 4D Pm 3B Pl 3B Pt 3B Pn 3B Pd...Pd Purpose: This command sets horizontal scrolling options. The control bytes embedded in the command sequence (represented by Pm, Pl, Pt, and Pn in the preceding command format), change the scrolling characteristics. Pd...Pd represents the data bytes. This command does not affect previous display settings. The format of the Horizontal Scroll Start command is as follows: 1B 5C 3F 4C 4D 47 Font selection Purpose This command starts horizontal scrolling on all lines. All subsequent commands are ignored until a Scroll Mode Release command is sent. The following list explains how the Horizontal Scroll On All Lines command operates: v Any codes not described here are ignored. v The most recent Display Mode Set command becomes effective in one screen scroll setting before the Scroll Start command is performed. v A screen scrolls from right to left, dot by dot. v The range of the display of being scrolled is defined by the screen mode setting. v The command is canceled when Pn = X'00'. After it is canceled, displayed characters are cleared and the write-in position moves to the most significant digit of the row. v The command can be executed on a single line only. v A character's Display Mode Set command (reverse, blinking, and so on) can be added with the display data frame. If the command is written twice or more in one scroll data frame, only the first command is valid; others are ignored. v When message data are changed, you must reissue this command. While scrolling, the User Definable Font Set command is not available. v Space data is written in the other rows except those selected with the Pl code. 1B 53 Pn Purpose: Selects the language font to use. The command stream is as follows: Pn 30: English -IBM code page 437 modified (default) 31: Japanese -JIS X 0208-1990 32: Korean -KS C 5601-1992 SurePOS 500 Model XX3 Technical Reference, v 1.3 81 Page 65 of