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EXPANDER
BASIC
This Mght
pen
unit
enables the
programming
of
EXPANDER
BASIC
instructions
in
addition
to
the
MSX-BASIC
ones.
Select
1
on
the
menu
on
page
6.
The^e
are
four
EXPANDER
BASIC
instructions,
CALL
BLINE
(Bold
Line!
CALL
SPAINT
(Super
Paint)
CALL
LLINE
(Light Line)
CALL
SPSET
(Super Point
Set)
The
aoove
EXPANDER
BASIC
instructions are
eg
often used
n
pro-
gramming
the Lustrations
drawn
with
the
iight
pen
(Th
s
can be
checked by
means
of the
symbo
1
Cj
an table
[T^2l
.
•
The
EXPANDER
BASIC
should be
utilized
In
the graDhics
mode
(SCREEN
2 or
SCREEN
3).
•
A
program
such
as
shown
below
s
made
together
w
:
th
the
EXPAND-
ER
BASIC.
Example.
CALL
BLINE
(DO,
20)
-
(100, 100!)
(underline) substitutable for
CALL
SPECIFIC
USAGE OF
EXPANDER
BASIC
By
the
MSX
personal
computer,
the colors
are
ndividually specified
every 8 dots
f
r
om
the
left
upper
corner
(0,
0)
rigntward
on
the
screen.
Ana
only
two
colors
can be used
for
each
horizontal 8-dot divided
section.
If
you
try to
d
r
aw
Ones
in
three colors (including tne
background
color)
for
the
above
section, therefore,
the preceding
line
may
change
in
its
color.
The
EXPANDER
BASIC
serves to solve
this
problem
to
keep
the
screen colors
clear.
[Example]
-MSX
BASIC-
-EXPANDER
BASiC-
01234567
0
1234567
Put blue
at
the 7th dot
and
the
WHITE
Put blue
at
the 7th
WHITE
0-5th dots
will
turn
blue.
dot and the6th dot
will
turn blue.
-
24
-
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