Radio Shack 4 Quick Reference

FOR/NEXT
FOR
variable
=
initial value TO iinal
value [STEP
increment
Establishes
a
program
loop.
20 FOR
H=l TO 2 STEP
-2
FEE
(dummy
n umber)
Returns
the amount
of free memory
space.
PRINT FRE<44)
FEE
(dummy
string)
Returns
the amount of free
string space.
PRINT
FRE<"44">
GET
buffer [.record
number]
Gets
a record from
a direct
disk file and places it in
a
buffer.
GET
i GET
t f 25
GOSUB
line
Goes
to a subroutine,
beginning
at the
specified line.
GOSUB
1000
GOTO line
Goes
to
the specified
line.
GOTO
100
HEX$ (number)
Calculates
the
hexadecimal
value of number.
PRINT
HEX$(30),
HEX* (50),
HEX*<90>
IF..
.THEN..
.ELSE
IF
expression THEN
statement(s)
or line ELSE
[statement(s)]
or [line]
Tests
a conditional
expression
and makes
a decision
regarding
program
flow.
IF
X > 127
THEN
PRINT
"OUT
OF
RANGE"
: END
IF A
< B
THEN PRINT
"A < B" ELSE
PRINT
"B < A"
INKEY$
Returns
a keyboard
character.
A*
=
INKEY*
INP(porf)
Returns
the
byte read
from a
port. Port
may
be any
integer
from
to
255.
100
A=INP(255)
21

Radio Shack 4 Specifications

General

Brand	Radio Shack
Model	4
Category	Remote Control
Number of Devices	4
Type	Universal Remote