Radio Shack Telephone Interface II Manual

(>
I
Instruc-
tion
X
register
Data
stack
Function
stack
1st
stage
2ndstage;3rdstage
1st
stage
2nd
stage
3rd
stage
4thstage
5th
stage
1.2
1.2
+
1.2
1.2
+
A
2.4
1.2
+
*
2.4
2.4
1.2
*
+
(
2.4
2.4
1.2
(
*
+
3.5
3.5
2.4
1.2
(
*
-I-
+
3.5
3.5
2.4
1.2
+
( *
+
SIN
3.5
3.5
2.4
1.2
SIN
+
(
*
+
B
30
3.5
2.4
1.2
SIN
+
(
*
+
)
0.5
4
3.5
2.4
2.4
1.2
1.2
+
*
(
+
*
+
/N
4
4
2.4
1.2
•^s
*
+
A(
4
4
2.4
1.2
A(
•%
*
+
25
25
4
2.4
1.2
A(
/\
*
+
)
3
4
2.4
1.2
•N.
*
+
ENTER
64
2.4
1.2
^
+
153.6
1.2
+
I
154.8
i
!
X
register
is
the
Calculation
register
As
seen
from
the
above,
"A("
is
placed
in
the
function
stack
as one
step.
The
Computer
will
handle
up
to
15
levels
of
parentheses
unless
the
function
stack
capacity
is
exceeded.
NOTES
The
Computer
permits
you
to
input
2
*
A,
3*tt
or
B*A<12),
for
example,
in
the
following
form:
2A,
3tt
or
BA(12)
omitting
the
multiplication
symbol
*
immediately
in
front
of
memory
or it.
Such
a
form
of
multiplication
has
priority
over
functions,
but
when
it
is
directly
followed
by
a
power,
the
power
takes
precedence
over
it.
Example:
SIN
2A
-»
equivalent
to
SIN
(2*
A)
27rAA3
->
equivalent
to
2*7r*(AA3)
However,
expressions
put
in
the
Computer
as
mentioned
above
(multiplication
instruction
*
omitted)
are
executed
just
as
tho
they
were
incorporated
in
the
instruction.
Example:
Behavior
of
the
stacks
during
execution
of
2ABC
S
If
A
=
3,
B
=
5,
C
=
7
Instruction
X
register
Data
stack
Function
stack
2
2
A
3
2
*
B
5
3
2
*
*
C
7
5
3
2 *
*
*
ENTER
35
3
2
*
*
105
2
*
I
210
30

Radio Shack Telephone Interface II Specifications

General

Brand	Radio Shack
Model	Telephone Interface II
Category	Desktop
Language	English