Tandy color computer 8 basic Quick Reference Manual page 15

Functions
TIMER
Returns the contents
of
the
tinner
(0-65535).
A=TIMER/18
USRn
(argument)
Calls
machine-language subroutine
n,
passes
it
an argument, and
returns a value from the
subroutine
to
the
BASIC program.
A=USR0(B)
VAL
{string)
Converts a
string
to
a number.
A=VAL("1 .23")
VARPTR
{variable)
Returns a
pointer
to
where
a variable
is
located
in
memory.
A=VARPTR(8)
Operators
T
Exponentiation
-» + Unary
negative, positive
V
Multiplication, division
+,
-
Addition
and
concatenation, subtraction
NOT
Logical operators
AND
OR
<, >,
=,
Relational
tests
<=,>=, <>
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