Tandy color computer 8 basic Quick Reference Manual page 7

Commands
Commands
EXEC
{address)
Transfers control to
a
machine-language program
at
address.
If
address
is
omitted, control
is
transferred
to
address
set
in
the
last
CLOADM.
EXEC 28032
FOR
variable
=
n1
TO
r\2
STEP
n3
Defines the
beginning
of
a
loop.
The end
is
specified
by NEXT,
variable
Loop
counter variable
n1 Starting
value
of
counter
n2 Ending value
of
counter
n3 Increment
or
decrement
value of
counter
FOR
Z
= 35 TO 125
STEP
5
GET
{sx,sy)-{ex,ey),array,G
Stores a rectangle that
is
on
the low-resolution
graphics screen
in
an
array, for
future
use by
the
PUT command.
sx,sy
First
corner
of
rectangle
ex,ey
Opposite corner
of
rectangle
array
Two dimensional
array
G
Selects
full
graphic
detail
storage.
Requires use
of
PSET,
PRESET,
AND, OR,
or
NOT
when
using
PUT
GET
(22,34>-<47,38) ,M,G
GOSUB
line
number
Calls
a subroutine beginning
at
the specified line
number.
GOSUB 330
GOTO
line
number
Jumps
to
the specified
line
number,
GOTO 125
HBUFF
buffer,size
Reserves an
area
in
memory
for
high-resolution
graphics.
buffer
Number
of
buffer
selected
size
Defines
buffer size.
BASIC
allows a
buffer
to
have
a
maximum
size of
7931.
HBUFF
1
,65
HCIRCLE
(x,y),r,c,h,s,e
Draws
;
a circle
on
the high-resolution
graphics
screen.
*.y
Center
point
r
Radius
c Color
h
Height/width
ratio
s Starting point
e Ending
point
HCIRCLE
(55,64) ,20,2,3,
.4, .7
HCLSc
Clears the
high-resolution graphics screen
to
a
specified
color.
c Color
If
unspecified,
BASIC
uses
current
background
color.
HCLS
2
HCOLOR
c1,c2
Sets
foreground and background
color
on
the
high-resolution graphics screen.
d
Foreground
color
(0-15)
c2
Background
color
(0-15)
HCOLOR
2,3
HDRAW
string
Draws
a
line
on
the high-resolution graphics
screen as
specified by
string.
The
string
commands
are:
A
Angle
BM
Blank
move
C
Color
D
Down
E 45 degree
angle
F
135
degree
angle
G
225
degree angle
H
315 degree angle
L
Left
M
Move
draw
position
N
No
update
R
Right
S
Scale
U
Up
X
Execute
substring
HDRAW "BM128,
96
;U25;R25;D25;L25"