NCR 5977-1000, Руководство пользователя

Страница: 52 / 172

5-40 NCR 5977 2x20 Display Programming
Move Cursor Right
Format
1B 10
Description
This command moves the cursor one position to the right. When the cursor is at the
right end of the upper line, it moves to the left end of the lower line. When the cursor is
at the right end of the lower line, it moves to the left end of the upper line. The cursor
location always indicates the position of the next character to be displayed, whether the
cursor is enabled and blinking or not. After each character is displayed, the firmware
performs a logical Move Cursor Right command. When the cursor is at the right end of
the lower line, it moves to the left end of the upper line and operates in an Overwrite
Mode (i.e.: The next character sent to the display overwrites the character in the left end
of the upper line).
Move Cursor Up
Format
1B 11
Description
This command moves the cursor up one line. When the cursor is on the upper line, the
cursor is moved to the same column on the lower line. The cursor location always
indicates the position of the next character to be displayed, whether the cursor is
enabled and blinking or not. After each character is displayed, the firmware performs a
logical Move Cursor Right command.
Move Cursor Down
Format
1B 12
Description
This command moves the cursor down one line. When the cursor is on the lower line,
the cursor is moved to the same column on the upper line. The cursor location always
indicates the position of the next character to be displayed, whether the cursor is
enabled and blinking or not. After each character is displayed, the firmware performs a
logical Move Cursor Right command.