The meanings
of
n1, n2, m,
and
p are as follows:
n1
Number
of
lines in virtual screen 1
n2 Number
of
lines in virtual screen 2
m Number
of
columns in virtual screen 1
p ASCII code corresponding
to
desired boundary character
The following sequence selects screen mode 2, sets the number
of
lines in virtu-
al screen 1
to
10, the number
of
columns
to
20
and
"#"
as the boundary
character.
Decimal 27,208,2,10,20,35
Hexadecimal 1B,DO,2,A,14,23
ESC 209
In modes 0,
1,
or
2 this escape sequence specifies which
of
the two virtual screens
is
to
be displayed. The operation is performed
if
this sequence
is
executed in
mode 3. This
is
done as follows:
Decimal 27,209,n
Hexadecimal 1B,D1,n
The first virtual screen is selected when 0 is specified for n,
and
the second vir-
tual screen is selected when 1 is specified for n.
If
the third byte is
not
specified
the default
is
O.
ESC 210
Displays the specified character in the specified position
on
the real screen. This
is done as follows:
Decimal 27,21O,x,y,p
Hexadecimal 1B,D2,x,y,p
The meanings
of
x, y and p are as follows:
x Vertical position
(1
to
8)
y Horizontal position
(1
to
80 decimal, 1
to
50 hexadecimal)
p ASCII character code
of
the Character Generator ROM
This sequence makes it possible
to
output
characters
to
any location in the real
A-14
screen, regardless
of
the position
of
the cursor
or
number
of
lines in the screen
window.
ESC 211
Turns
on
or
off
display
of
function key definitions. This
is
done as follows:
Decimal 27,211,n
Hexadecimal 1B,D3,n
Function key definitions are displayed when 0
is
specified for n, and are
not
displayed when 1 is specified. The default value
is
1.
ESC
212
In
modes 0,
1,
and
2 this escape sequence moves the screen window
to
the
top
of
the virtual screen containing the cursor. No operation is performed
if
this
sequence is executed in mode 3. The position
of
the cursor remains unchanged.
Decimal
Hexadecimal
ESC 213
27,212
lB,D4
In
modes 0,
1,
and 2 this escape sequence moves the screen window
to
the end
of
the virtual screen containing the cursor.
No
operation is performed it his
sequence is executed in mode
3.
The position
of
the cursor remains unchanged.
Decimal
Hexadecimal
ESC 214
27,213
1B,D5
In
modes 0,
1,
and
2 this escape sequence selects the type
of
cursor
to
be dis-
played.
In
mode 3 always cursor type 3
is
selected.
The
sequence consists
of
three bytes as follows:
Byte1:
Decimal
27
Byte
2:
Decimal 214
Byte
3:
n
Hexadecimal
1B
Hexadecimal D6
Here, n specifies the type
of
cursor displayed as follows:
A-IS
1
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