ASCII, 01-09-94
4. SCREEN CONTROL CODES
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Below is a list of all control codes and escape sequences which may be
used when doing character output by MSX-DOS character functions, BIOS calls
or writing to the device CON. These are all compatible with MSX-DOS 1 and
contain the VT-52 control codes.
The screen is 24 lines of 2 to 80 characters. When a printing character
is displayed the cursor is moved to the next position and to the start of the
next line at the end of a line. If a character is written in the bottom right
position then the screen will be scrolled to allow the cursor to be
positioned at the start of the next line. The letters in escape sequences
must be in the correct case, the spaces are inserted for readability they are
not part of the sequence. Numbers (indicated by <n> or <m>) are included in
the sequence as a single byte usually with an offset of 20h added.
Ctrl-G 07h = Bell.
Ctrl-H 08h = Cursor left, wraps around to previous line, stop at top left of
screen.
Ctrl-I 09h = Tab, overwrites with spaces up to next 8th column, wraps around
to start of next line, scrolls at bottom right of screen.
Ctrl-J 0Ah = Line feed, scrolls if at bottom of screen.
Ctrl-K 0Bh = Cursor home.
Ctrl-L 0Ch = Clear screen and home cursor.
Ctrl-M 0Dh = Carriage return.
Ctrl-[ 1Bh = ESC - see below for escape sequences.
Ctrl-\ 1Ch = Cursor right, wrap around to next line, stop at bottom right of
screen.
Ctrl-] 1Dh = Cursor left, wrap around to previous line, stop at top left of
screen.
Ctrl-^ 1Eh = Cursor up, stop at top of screen.
Ctrl-_ 1Fh = Cursor down, stop at bottom of screen.
7Fh = Delete character and move cursor left, wrap around to previous
line, stop at top of screen.
Esc A = Cursor up, stops at top of screen.
Esc B = Cursor down, stops at bottom of screen.
Esc C = Cursor right, stops at end of line.
Esc D = Cursor left, stops at start of line.
Esc E = Clear screen and home cursor.
Esc H = Cursor home.
Esc J = Erase to end of screen, don't move cursor.
Esc j = Clear screen and home cursor.
Esc K = Erase to end of line, don't move cursor.
Esc L = Insert a line above cursor line, scroll rest of screen down.
Leave cursor at start of new blank line.
Esc l = Erase entire line, don't move cursor.
Esc M = Delete cursor line, scrolling rest of screen up. Leave cursor
at start of next line.
Esc x 4 = Select block cursor.
Esc x 5 = Cursor off.
Esc Y <n><m>= Position cursor at row <n> column <m>. Top left of screen is
n=m=20h (ASCII space).
Esc y 4 = Select underscore cursor.
Esc y 5 = Cursor on.
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