Helwett packard 9100a Owner's manual

m HEWLETT-PACKARD CALCU

AT

Model

9100A

' '

.,

""""""'

HEWLETT''

PACKARD

WARRANTY

AND

ASSISTANCE

Th

e He

wl

e

tt

-P

ac

kard 9100A Calc

ulator

is warranted a-

ga

inst def

ec

ts in ma

ter

ia

l and wor,kmans

hip

. This warranty

applies

for

o

ne

y

ea

r from the date of delivery

for

calcula-

tors return

ed

to the

ne

arest HP field office.

We

will repair

or repl

ace

pa

rts which prove

to

be

defective

during

the

warran

ty

period. No other warranty is expressed

or

im-

plied.

We

are not liable for consequential damages.

For any assistan

ce

co

ntact your n

ea

rest Hewlett-Packard

Sales and Service Offi

ce

. Addresses are provided on

pages

32

and

33

of

this manual.

•

OPERATING

AND

PROGRAMMING

HEWLETT

PACKARD

9100A

4

GENER

AL

DESC

RIPTION

J

This section contains general informati

on

about the Model

9100A

.

In

cluded is a discussion of calculator perfor-

mance c

he

cks, accessories supplied with the Model

9100A,

and information concerning

se

rvicing.

The Hewle

tt

-

Pa

ckard 9100A Calculator is a scientific desk-

top calcula

tor

. Trigonometric and logarithmic functions

are

ca

llculated with a single keystroke. The Model 9100A

is programmable; conditional branch instructions provide

complete programming capability.

In

addition, two pro-

grams can

be

recorded

on

each magnetic card supplied

with the

91

00A.

The Calculator

has

two memory systems.

One

is a unique

Hewle

tt

-

Pa

ckard

Read

-Only-Memory. It contains the sub-

routines necessary

to

execute the keyboard instructions

and to calculate the trigonometric and logarithmic func-

tions. ..

The 9100A also contains a magnetic core memory which

adds the storage and programming features. There are

19

accessible registers in the magnetic core memory: three

are displayed, two are only for data storage and 14

can

be

used

for

program storage

or

for

additional data storage.

The

14

program registers can accommodate up to 196

program steps.

Three registers are displayed

on

the cathode ray tube;

they are designated x

KEYBOARD

, y

ACCUMULATOR

and

z TEMPORARY. The format

of

the display can

be

selected

on

the keyboard. With Floating Point notation, the contents

of

the registers are displayed

as

a ten-

digit

number and a

two-

digit

exponent, indicating the power

of

ten multiplier.

This mode

of

display allows simultaneous presentation

of

very large (up

to

10

99) and very small (down to 10"98)

numbers. With Fixed Point notation, the contents

of

the

registers are displayed in decimal format, with the num-

ber of digits

to

the right

of

the decimal

(0

to

9) set by the

decimal thumbwheel. Regardless

of

the display mode

selected, the 9100A operates in Floating Point calculat-

ing all answers to

12

digits,

of

which ten are displayed.

'

•

t

The calculator

was

carefully inspected both mechanically

and electrically before shipment.

It

should

be

physically

free

of

mars

or

scratches and

in

perfect electrical order

upon receipt. To confirm this, the calculator should

be

inspected

for

physical damage in transit. Also check

for

supplied accessories listed in Table 1(page6), and test the

electrical performance of

the

calculator .

A magnetic program card loaded with the D

i-

agnostic Program (See page

28

, for

an

explana-

tion) is in the pocket

on

the rear cover of the

Program library. To enter the program:

SET:

SET

:

RUN

SET

:

RADIANS

SET

:

PRESS:

GOTO 0 0

C

IC

I

Be

sure magnetic card is fully inserted in the card reader

with the printed side

of

the card toward the keyboard.

PRESS:

PRESS

:

ENTER

C

0

N

T

I

N

u

E

Execution

of

the program (indicated by a flash-

ing display

of

X= 3., Y= 2.

000000

and Z = 1.)

ensures

that

the 9100A

is

operating

co

rrectly.

If

the calculator is damaged

or

an

electrical deficiency is

indicated, file a claim with the carrier

or

refer to the war-

ranty on the inside

front

cover of this manual.

CAUTION

USE

A

SOFT

CLOTH

TO

CLEAN

THE

DISPLAY

BEZEL

AN

ABRASIVE

MA-

TERIAL

WILL

SCRATCH

THE

SUR-

FACE.

INITIAL

INSPECTION

5

6

POWER

RE

QUI

REMENTS

•..

::.

OU

NDI

NG

::

:::

~U

IR

EM

ENT

S

ACCES

SORI

ES

~f•

UIPM

EN

T

SUPPLIED

SERVICE

CONTRACTS

Th

e Model 9100A requires either 115 or 230 volts

ac

±

10

% ,

50

to

60 Hertz and

400

Hertz and requires less

th

an

70

watts of power. With the calculator disconnected

from the ac power source, slide the line voltage switch

on

the rear panel until the line voltage

to

be

used appears.

CAUTION

DO

NOT

APPLY

OPERATING

POWER

TO

THE

91OOA

CALCULATOR

UN-

LESS

THE

LINE

VOLTAGE

SWITCH

ON

THE

REAR

PANEL

IS

IN

THE

PROPER

POSITION.

OTHERWISE,

DAMAGE

TO

POWER

TRANSFORMER

MAY

RESULT.

To

pro

te

ct operating personnel, the National Electrical

Manufacturers' Associati

on

(NEMA) recommends

that

the

calcula

tor

keyboard and cabinet

be

grounded. The calcu-

lator is equipped with a three-conductor power cable

wh

ich. when plugged into

an

appropr

ia

te receptacle,

grounds the cabinet

of

the calculator. The round pin

on

•

the power cable three-prong connector is the ground

con

-

nection.

The accessories and equipment supplied wi

th

each Model

9100A a

re

listed in Table 1.

PART

NO

.

TABLE

1

Accessories/Equipment Supplied

QUANTITY

DESCRIPTION

09100

-90001 2 Operating and

Pro-

1-

-gramminl! Manual

Program Librarv

09100

-

90002

1

09100

-

90003

1 Proeram

Pad

09100

-

90004

1 Magnetic Program

Card Loaded with

Diaenostic Prol!ram

4040

0350

1 Dust Cover

5060

. 5919 1 Magnetic Program

I Card Container with

Ten

Proe:ram

Cards

8120

0078

1 Power Cord

I

9320

1157 1 Pull-out Instruction

in

Card contained

the bottom .of the

9100A

A

box

of

five program pads (Part

No

. 09100.-90000) is

available.

Service contracts are available

for

the 9100A Calculator.

For furthe·r information contact your local Hewlett-Packard

Sales and Service office.

(See

pages 32 and

33

for

office

locations.)

,

I

1

•

I

l

•

t

KEYBOARD

Switches

ac

line power to the Calculator. Application

of

ac line power lights the register designators at the right

of

the cathode ray tube.

Selects the entry and display units

for

the

tr

igonome

tr

ic

functions.

Selects the mode

of

operation.

RUN:

used to perform calculations, address the pro-

gram counter and execute a program.

PROGRAM:

used to enter a program from the keyboard

and verify a program.

Selects the mode of display.

FLOATING

DECIMAL

POINT:

the display consis

ts

of

a ten-

di

git

number and a two-

digit

exponent, indicat.

ing the power

of

ten

multip

lier.

NUMBER DISPLAY

12

,

345

.

67898

=

1.234567898

x

10

4 U31./

56

7

89B

01./

FIXED

DECIMAL

POINT

: the number is displayed with

th

e

decimal point correctly lo

ca

ted. The decimal

whe

el sets the number of places

to

the right

of

the decimal point. The least significant

digit

is

rounded.

If

the number overflows to the left

of

the

decimal point,

th

e display

for

the overflowed

register reverts

to

floating decimal point.

DECIMAL WHEEL SETTING DISPLAY

I 2 3

1./

5.6 789B ·

_12

3

'15

.6

7J.

t

Leading Zeros

Blanked

t

L

as

t Digit

Rounded

Numb

er

too large

for

th

is

se

tting

• automatically

s

hift

s

to

floating decimal

point.

T_h7error light indi

ca

tes an illegal operation such

as

di

-

~1s1on

by

0

.,

.~ .

sin-

1x (/K

l>

1),

In

x (x <O).

An

illegal

operation

during

program executi

on

will

not

s

top

the

program

.

7

--

i·li

rl

M

¼i

i

iLHMffl

HMdMtl

m

NH.Ydii#i

iif:id

8

II

a

•

NUMBER

ENTRY

Cl

ea

rs

th

e X, Y, Z, e and F registers (0.

~

X,Y,Z,e and

F)

. Clears the

FLAG

and clears the

AR

C and

HYPER

co

nd

i-

tions.

Clears

th

e X register (0.

~

X). Clears the

ARC

and

HYP

ER

conditions. It is not

ne

cessary

to

press

CLEAR

x

before each entry.

Changes

th

e sign

of

the contents of

th

e X r

eg

ister.

Changes the sign

of

the exponent

if

ENTER

EXP

wa

s

pressed.

Se

ts

th

e decimal point.

It

is not

ne

ce

ssa

ry

to

enter the

decimal point

wh

en entering integers

or

when using the

ENTER

EXP

key.

Cle91s the exponent and causes the next digit entries (0

to

99

) and

CHG

S

IGN

to affect only the·exponent. The

expone

nt

digits are entered in a

se

rial manner, wi

th

each

new d

ig

it

en

try

becoming the

lea

st sig

nifi

ca

nt

digit

of

the

expone

nt

.

CLEAR

2

ENTER

EXP 1 0

0.

l.

00

10

Pressing

ENTER

EX

P after any keyboard operation, except

digit

en

try, will e

nt

er 1.0

for

the number in

X.

CLEAR

ENTER

EXP

CHG

SIGN

0.

DO

6 a

oo

,.

000 000

000

-

06

ALL

KEYBOARD

ENTRIES

ARE

DISPLAYED

IN

THE

X

REGISTER

.

SET

:

0.

D.

l.r6.1 B

•

NUMBER

ENTRY

9

SET:

FLOAT

ENTER: -

39

,

800

= - 3.

98

X

10

4

8

0.

00

0. 00

-3.980 0

01./

CHG

ENTER

4

SIGN

EXP

SET:

De

cimal

wh

eel to 4

ENTER: .

0094

0.

9

ENTER

3 0.

EXP

.0091./

CHG

or

SIGN

t 0 0 9 4

SET:

De

ci

mal

wh

eel to 4

ENTER:

128

.0167

2 8 0.

0.

6 7

Ir

fl

.0 I 6 1

SET:

De

cimal wheel

to

3

0.

I

iB

.O

11

SET:

De

cimal wh

ee

l to 8 0.

0.

l.rB0 161

Or

- 4x

10

-12

o.

OD

o.

OD

·'I.

-u

10

CONTROL

KEYS

l

he

Con

tr

ol Keys r pos1t

1o

n the cont

en

ts of

th

e displayed registers

as

req

ui

red

for

succeeding

calculations ,. , a

nci

:

re

f r to

th

e conte

nt

s of X. Y

an

d z.

II

z

£l

)' y

X X

z

---z

y

x:y

x

_..,

X

Duplicates the contents of Xto the Y register and shifts the

contents of Y to the Z regis

ter

. Loses the contents of the Z

register.

t

"·

3.

Dupl

ic

at

es

the co

nt

ents of Z

to

the Y register and shifts

the cont

en

ts of the Y register to the X register.

Loses

the

c

on

t

en

ts

of

the X register.

t

6.

5.

Shifts the contents

of

X to the Y regis

ter

, shifts the

con-

tents of Y to the Z register and shifts the contents

of

Z

to

the X regis

ter

.

3.

J'l/6

0.

9.

Shifts the

coJ1tents

of

Z to the Y register, shifts the con-

tents

of

Y

to

the X register and shifts the contents of X

to

the Z register.

7 I.

Q.

i.

Exchanges the contents

of

the X and Y registers.

The

contents of Z are unchanged.

I

It

)

•

1

•

:

1

~

•

ARITHMETIC

KEYS

The arithmetic

keys

operate

on

the X and Y registers, entering

th

e result of the

ca

lculati

on

int

o

the Y register and leaving the X register unchanged.

Adds the contents of the X register

to

the contents

of

the

Y register. The sum is entered into the Y register and the

X register is unchanged.

8 +4 =

12

---+ Y

0.

I e.

Y.

6 + 7 + 4 =

17---+

Y

t 0.

6 7 I

7.

Y.

Subtracts the contents

of

the X register from the contents

of

the Y register. The difference is entered

into

the Y

register and the X register is unchanged.

17-9

=

8---+Y

9

47

-19 - 8 + 5 =

25---+

Y

0.

8.

!J

,

D.

lS.

5

II

11

12

a

ARITHMETIC

KEYS

Mu

lt

ip

lies

th

e conte

nt

s of the Y register

by

th

e co

nt

e

nt

s

of

th

e X register. The product is entered into

th

e Y

regist

er

an

d the X register

is

unchanged.

9 X 7 =

63

~

Y

t 0.

CLEAR

9 7 X

63

.

00

7.

3 X 5 X 4

-:-

8 =7.5

~

Y

3 t

CLE

AR

0.

7.50

4 . B.

X 8 -

.

I

Div~d

es

th

e contents of the Y

re

gister by the c

on

t

en

ts

of

•

th

e X register. The quotient is

en

tered into t

he

Y

re

gis- •

ter and the X regis

ter

is unchanged.

36

-:-

4 =9

~y

t

CL

EAR

3 6 4 0.

9.

00

'I

.

72

-:-

6

-:-

3 +9 =13

~

Y

EXAM

P

LE

(3 X

4)

+

(6

(8

X

2)

-

KEY

STEP

3

.,_

+

8--

4 g.;._

..

,c;

10-

6 l h

,

1~

-

9)

6

KEY

9

-

a

/3

.

00

9.

=

.9~

y

•

t

CONTROL-STORAGE

The Storage and Recall Keys provide

ac

ce

ss

to

the

16

storage registers: 0, 1, 2, 3. 4. 5. 6. 7. 8.

9.

a.

b, c, d,

eand

F.

It

is not necessary

to

clear a regis

ter

be

for

e storing a number;wrrteoverthe previously

stored number.

Stores the contents

of

X in the regis

ter

indicated by

th

e

following keystroke: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a. b,c, d.

e orF. The contents of the X register are unchanged.

Stores the contents

of

Y in the register indicated

by

th

e

following keystroke: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. a, b,c, d,

e

or

f.

The contents of the Y register a

re

unchanged.

CONTROL-RECALL

Press a,b.c, d,e or F

to

re

ca

ll the

co

ntents

of

that

regis-

ter

to

the X regis

ter

. The contents

of

a. b,c,d. e or F are

unchanged.

They:,

ikey must

be

used to recall

th

e con-

tents

of

the numeric register

s.

Pressing only 0, 1, 2, 3, 4,

5, 6, 7, 8, 9 will not recall the contents of that

re

gis

ter

to

the X register, but will enter

that

digit

in

th

e X regis

ter

.

Recalls the contents

of

F and e

to

the X and Y registers.

The contents of Fand e are unchanged.

CONTROL-STORAGE

AND

RECALL

Exchanges the contents

of

Y with the co

nt

en

ts

of

the regis-

ter

indicated by the following

key

s

tr

ok

e:

0, 1, 2, 3, 4, 5, 6,

7, 8, 9,a,b,c,d,e orF. This is the only instruction

th

at

recalls the contents

of

a numeric s

tor

age register.

0.

9.

I.

0.

,.

I

,,.

a %-+I I

o.

I.

3

II

13

14

i·BriM!i

i@·IW~I

II

ti

FUNCTION

KEYS

.,

Selects the entry and display units for the trigonometric

functions.

To

convert from DEGREES (RADIANS)

to

RADIANS

(DEGREES):

1) S

ET

: DEGREES (RADIANS)

2)

ENTER

: DEGREES (RADIANS)

3)

PRESS

:

sin.r

, cos.r ,

tan.r

4)

SET

: RADIANS (DEGREES)

5)

PRESS

:

a~c

sin

x,

cos.r .

or

tan

.r

; answer in RADIANS

(DEGREES) is e

nt

er

ed

into the X register.

lnv

ersE!

trigonometric functions are calculated for the prin-

cipal value of

th

e function.

0= s

in

-1

x;

-

90

°5

0

5+

90

°; ( -

3/

25 8

5+

3/

2)

8= cos -1

x;

0

•5

e

~+

1so

•;

(0

~

e

~

17')

0= tan -1

x:

-

90

•~ 0

~+

90°; ( -

1r

; 2

~

e

~+

3/

2)

EXAMPLE

sin

+135

°. =

+.7071;

sin•1 + .7071 =

+45.

0

•

Rep~ces the contents of the X register with the Sine

of

the •

contents

of

X.

·

WJ

Replaces the contents of the X register with the

Cos

ine of

the contents

of

X.

Replaces the

con

tents of the X register with the Tangent

of

the contents

of

X.

Prefix used to calculate the inverse trigonometric and

hy-

perbolic functions. The answer is entered into the X regis-

ter. 1

Prefix used

to

calculate the hyperbolic (sinh, cosh, and

tanh) functions. The answer is entered into the X register. 1

EXAMPLE:

sinh-1 2 = 1.

4436

CORRECT

sinh-1 2

~

X

INCORRECT •

. . 1 2

_____,,_

ERROR

5

in

-

_,.,,

LIGHT

t

FUNCTION

KEYS

Replaces the contents

of

the X regis

ter

with the square root

of

the contents

of

X.

Replaces the contents

of

the X register with

th

e logarithm

to

the base e of the contents

of

X.

Replaces the contents

of

the X register wi

th

e

ra

ised to

th

e

power defined by the contents

of

X.

Replaces the contents of the X regis

ter

with the logarithm

to

the base

10

of the contents of X.

Integer X. Eliminates the decimal part of

th

e contents of

the X register. Enters the integer into the X register.

0.

5.

Absolute

va

l

ue

of

Y. Sets the contents

of

th

e Y regis

ter

positive.

Enters pi into the X register.

o.

5.

-5.

15

II

a

•

16

a

II

VECTOR

KEYS

Conversion

from

rectangular

to

polar

coordinates will cal-

culate the angle, 9, in the range:

-

180

° < 9 ~ +

180

°

-7Tradians < 9

~

+

1T

radians

Changes rectangular coordinates consisting

of

an

x com-

ponent in the X register and a y component in the Y regis-

t

er

to

polar

coordinates:

,,

CLEAR

TO

POLAR

An

gle

(9)

=

Tan-

1 y/ x

~

Y

Rad

ius (R) =

✓

x2 + y2

~

X

SET

:

DEGREES

t

--

-

--------

-

y

I~

4

--

x--

CHG

SIGN

t 3

0.

-53./301

5.

Changes polar coordinates consisting of a radius (R) in the

X register

at

an angle

(9)

in

the Y register

to

rectangular

coordinates:

y component = R x Sin 9

~

Y

x component = R x

Cos

9

~

X

I

•

I

VECTOR

KEYS

A

CC

UMU

LA

TE

+: Adds the contents of the X and Y regis-

ters

to

the contents

of

t

he

F and e registers respectively.

Th

e sums are entered i

nto

the Fand e registers. Fand e

are cleared with t~e C

LE

AR ins

tru

ctio

n.

F

+X

--+F

e +

Y-.+e

A

CCUM

ULA

TE

- : Subtracts the co

nt

ents of the X and Y

r

eg

isters from t

he

contents of

th

e f a

nd

e registers re-

spec

ti

v

el

y. The

di

fferences are

en

tered into

th

e f and

e register

s.

f - X

--+f

e -

Y--+

e

Recalls the co

nt

en

ts of

th

e F

an

d e regist

er

s to t

he

X and

Y

re

gis

ter

s

re

specti

ve

ly. The cont

en

ts of f and e are un-

changed.

CLEAII

F--+

X

e--+

Y

t

2

0.

'I.

-r.

C

-H

G

SIGN

ACC

1 +

RCL

ACC

+

0.

o.

RCL

EXAMPLE: Vector Addition

(2x

+3y) + (4x +5y) -

(3x

-6y) =

3x

+ 14y

1'EP

KEY

STEP KEY STEP

KEY

1-

ClEAII

6-

5

11-

CHG

SIGN

2-

3

7-

+

12-

+

3-

+

8-

4

13-

3

4--

2

9--

ACC

+

14--

ACC

-

5--,:

ACC

+

10-

6

15-

RCL

EXAMPLE: Mu

lt

ip

lication

of

c

omp

lex numbers (

j2

= - 1)

(3

+

j4

) ( - 2 j3) = -

18

+

jl

ICEr S:rEP

KEY

STEP

KEY

ftlAI

7-

ACC

-f'"

13-

In%

4

8-

3

14--

ACC

+

t

9-.-

+

15-

RCL

I

16'-

2

16-

es

11-

C

HI

..

GN

17-

TO

RE

CT

I.AA.:=-

TO

PG

LAII

17

II

•

II

18

PROGRAMMING

Th

e Hewle

tt

-P

ac

kard Model 9100A h

as

a maximum capa-

city of

196

program step

s.

The 0, 1, 2, 3, 4, 5, 6, 7, 8,

9, a,b. e, and d regis

ter

s c

an

be us

ed

for ei

th

er program

or data stor

age

. The X, Y and Z regis

ter

s are the display

registers and the e and F

re

gisters are

on

ly data storage

register

s:

th

ese

fi

ve

registers cannot

be

used

for

program

storage.

Program stor

ag

e consists of a

14

by

14

array (

see

Figure

1). The registers are designated 0. 1, 2, 3, 4, 5, 6, 7, 8,

9,a,b, e, and d as a

re

the characters in each register.

Memory addr

ess

e2

indicat

es

the e regis

ter

and character

2 in

th

e e register.

A program is stored so

that

th

e regis

ter

with the starting

address

of

th

e program is filled with the program steps

be

-

fore t

he

q

ue

ntial register is entered to store pro-

gram steps. Wi

th

the

fir

st program step in location 00,

program storage will

be

used in the following manner: 00,

01,

...

09

,

Oa

,

Ob

,

Oe

, Od,

10

,

..

. 19,

la

,

lb

,

le

,

Id,

20

...

up

to

de

, d d, the address

at

which the program

co

4r;it

er r

es

ets to

00

.

It is

not

n

ec

es

sary to learn a program language

for

the

Cal

cu

lator. Keyboard operations are the program instruc-

tions.

Ea

ch program step is one keyboard instruction.

Programs that require more storage than

thee

and Fregis-

ters necessitate use

of

a register that could

be

used

for

program s

tor

age. A complete register is required

for

s

tor

ing a ten-dig

it

number and the two-di

git

exponent;

th

erefore, the maximum program

si

ze

of

196 steps is

re-

duc

ed

by

14

steps

for

each program register us

ed

for

data

storage.

CHARACTER

0

1

2

3

4

5

6

0:: 7

LM

~

8

ffi

:

0:

b

C

d

e

F

-·x

y

z

o 1 2 3 4 5 6 7 8 9 a b e d

2e

Program or Data Storage

lc2

Data Storage

Display

Figure 1

•

I

PROGRAMMING

Selects the mode of operation.

RUN:

used

to perform calculations, address the program

counter and execute a program.

PROGRAM:

used t9 enter a program from the keyboard

and verify a program.

Causes

an

unconditional branch to the program address

entered by the next two keys

tr

ok

es

or

by

the next two pro-

gram step

s.

Each

program step can be only one keystroke.

CORRECT

INCORRECT

STEP

KEY

STEP

KEY

29

2a

2b

GOTO

C

11

I

5

C

29

GOTO

( l ( I

2a 5 C

2b

Starts program execution

at

the present address.

If

the

program has

ha

lted execution at a S

TOP

instruction,pre

ss

-

ing CONTINUE will st

art

program execution wi

th

the next

program step.

If

the program h

as

halt

ed

execution at

an

END

ins

tru

ction, pressing CONTINUE will start program

execution

at

program step

00

. CONTINUE

ca

n also be

used as a 'no operation' program step.

See

the program

for

N!

, page 26.

Halts program execution and c

au

ses

a return to

th

e dis-

play mode. The

STOP

ins

tru

ction provides

an

uncondi-

tional halt of program execution

for

en

try of data or dis-

play

of

re

su

lt

s.

Pressing CONTINUE begins program

execution with the next program step. Pressing

STOP

during execution

of

a program will cause

th

e program to

stop execution at the present program step and w

ill

cause

a return

to

the display mode.

Pre

ssing CONT

IN

UE

will

begin program execution with the next program step.

U

se

the

STOP

instruction

to

enter data. With the

pr

og

ram

at a

STOP

or

END

ins

tru

ction any keyboard operation can

be manually executed, provided

th

at no data is stor

ed

in

a register co

nt

aining program steps. Storing data in a

regis

ter

containing program steps will des

tr

oy the program

steps in that register.

Halts program execution and c

au

ses

a re

turn

to

th

e

display mode. The

in

s

tru

ction resets the program counter

to

00

so

that

pre

ss

ing CONTINUE begins program e

xec

u-

tion

at

step

00

.

END

must

be

the last ins

tru

ction in a program. Reading

the

END

instruction from the magnetic

ca

rd stops the

reading proce

ss

and resets the program cou

nter

to

00

.

19

HMri@ti

m

•

II

20

II

PROGRAMMING

PROB

L

EM:

Write a program to

so

lve

AA

~ :

for

any A and B.

STEP

KEY

X y z F e

00

CLEAlt 0 0 0 0 0

Cl

ea

r display & e&F.

01

STOP

A B Stop to enter A & B.

02

%-+l

I

03

e A Store A and B.

04

J-+C

I

05

-F

A B 0 B

06

X AxB

07

...

A

AxB

Move AxB to Z

to

calculate A + 8.

08

-F

B

09

+

A+B

Oa

ROLL"' A+ B

AxB

B

Po

sition AxB and

Ob

.

AxB

A+B

to

calculate

-

A+B

. quot

ien

t.

Oc,,

ROLL

,t-

B A+B:~~

Od

x:,y B

10

e A

11

END A B

AxB

A+B

Final Display

See

ENTERING A

PROGRAM

·

FROM

THE

KEYBOARD

(Page

24)

. A blank register indicates the contents of the

register are unchanged from the previous step.

Ca

uses a brief display before continuing with execu·

tion

of

the program.

If

the

PAUSE

key

is held

de-

pre

ss

ed

dur

ing execution

of

a program, a

STOP

will occur

at the next

PAUSE

instruction in the program.

Pressing

CONTINUE will begin executi

on

with the next program

step. Use successi

ve

PAUSE

instructions

for

a longer dis-

play.

This instructi

on

single-steps the program. The display

will depend upon the mode of operation:

PROGRAM

or

RUN

. This is the only instruction

that

cannot be a pro-

gram step.

PROGRAM:

Single-steps the program, displaying in X

the program step address and the code of the

instructi

on

in that program step.

EXAMPLE:

5.

'I.

I.a---------

S'I

Program step

12

contains the

SET

FLAG

instruction; its

code is 54.

•

Helwett Packard 9100A Owner's manual

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