Hp 9100a Owner's manual

mJ HEWLETT·PA

HEWLETT

PA~CKARD

WARRANTY

AND

ASSISTANCE

Th

Hewldt

Pr1ckard 91

OOA

Calculator

1s

warranted

a-

am t

cfefect~

1n

matenal

and worrkrnansh1p.

Th1s

warranty

r r

lt

f r ne yPar

from

the

date

of

del1very

for

calcula-

t r r

turned

to

the

nearest

HP

f1eld off1ce. We

will

repair

r

rPr.

lcJ

e

PcH1~

wh1ch prove

to

bE?

defect1ve

dunng

the

w

nrJ

ty

per~o

J

No

other

warranty

IS expressed

or

im-

r

I1E

d

We

are

not

l1able

for

consequent1al

damages.

v a 1

tance

contact

your

nearest

Hewlett

-

Packard

and Serv1ce Off1ce.

Addresses

are prov1ded on

par,es 32

and

33

of

th1s

manual.

OPERATING

AND

PROGRAMMING

HEWLETT

PACKARD

9100A

Th1s

S1~ct1on

contams generat information about the Model

91

OOA.

lncluded

1s

a d1scussion

of

calculator perfor-

mance checks, accessories supplied with the Model

9100A.

and mformat1on concerning servicing.

The Hewfett-Packard

9100A

Calculator is a scientific desk-

top

ca

Ieu

lator

. Trigonometrie and loga

rithmic

functions

are calculated

w1th

a single keystroke. The Model

9100A

1s

programmable; conditional branch instructions provide

complete programming capability. ln addition, two pro-

grams can

be

recorded

on

each magnetic card supplied

with the

91

OOA.

The Calculator has two memory systems. One

JS

a unique

Hewlett-Packard Read-Only-Memory.

lt

contains the sub-

routines necessary

to

execute the keyboard instructions

and

to

calculate the trigonometric and logarithmic func-

t.

II

1ons.

The 91

OOA

also contains a magnetic core memory which

adds

the

storage and programming features. There are 19

access1ble registers in the magnetic core memory: three

are d1splayed, two are only

for

data storage and 14 can

be

used

for

program storage

or

tor

additional data storage.

The

14

program reg1sters can accommodate up to 196

program steps.

Three reg1sters 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-d1git exponent. indicating the power

of

ten multiplier.

This mode

of

display allows simultaneaus presentation of

very large (up

to

1Q99) and very small (down to

10-s)

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. I

T

he

calculat

or

was carefully inspected both mechanically

and electrically before

sh

ipment.

lt

should

be

physically

fr

ee

of

mars

or

scratches and in perfect electrical

order

upon receipt.

To

confirm this. the calculat

or

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 Di-

agnostic Program (See page 28.

for

an

explana-

tion)

is in t

he

pocket

on

the rear cover

ot

the

Program library. To

enter

the program:

SET: ON

SET:

RUN

SET:

RADIANS

SET:

FIXED

PR

ESS:

GO

TO 0 0

(

)(

)

Be

sure magnetic card is fully inserted in the card reader

with the printed side of the card toward the keyboard.

PR

ESS:

PR

ESS:

ENTER

c

0

N

T

I

N

u

E

Execution of

th

e program (indicated by a flash-

ing

display of X 3., Y 2

000000

and Z

==

1.)

ensures

th

at

th

e 91

OO

A

1s

operating correctly.

lf

th

e calcu

lat

or is damaged

or

an

electrical deficiency is

indicated, file a

claim

wit

h the carrier

or

refer to the war-

r

an

ty

on the inside

fr

ont cover

of

th

is manual.

CAUTION

USE

A

SOFT

CLOTH

TO

CLEAN

THE

DISPLAY

BEZEL.

AN

ABRASIVE

MA

-

TERIAL

WILL

SCRATCH

THE

SUR

-

FACE

.

5

ITIAL

I

SPECTIO

6

TS

01

SERVICE

CONTRACTS

LI

The Model 91

OOA

requires either

115

or

230

volts

ac

:t

10%,

50

to

60

Hertz and

400

Hertz and requires less

than

70

watts

of

power. With the calculator disconnected

from

the

ac

power source, slide the line valtage switch

on

the rear panel

until

the line

valtagetobe

used appears.

CAUTION

DO

NOT

APPLY

OPERATING

POWER

TO

THE

9100A

CALCULATOR

UN-

LESS

THE

UNE

VOLTAGE

SWITCH

ON

THE

REAR

PANEL

IS

IN

THE

PROPER

POSITION.

OTHERWISE,

DAMAGE

TO

POWER

TRANSFORMER

MAY

RESULT.

To protect operating personnel, the National Electrical

Manufacturers' Association (NEMA) recommends that the

calculator keyboard and cabinet

be

grounded. The calcu-

lator

is eqUipped with a three-conductor power cable

wh1ch,

when plugged into

an

appropriate receptacle,

grounds the cabinet

of

the calculator. The round pin

on

the power cable three-prong connector is the ground con-

nection.

The accessones and equipment supplied with each Model

9100A

are listed in Table 1.

TABLE

1

Accessories/Equipment Supplied

PART NO.

09100-90001

091

00-90002

09100-90003

091

00-90004

4040

.

0350

5060

. 5919

8120

.

0078

9320

.

1157

QUANTITY DESCRIPTION

2 Operating ana Pro·

1

gramming Manual

Program Library

Program

Pad

Magnetic Program

Card Loaded with

Diagnostic Program

Dust Cover

Magnetic Program

Card Container with

Ten Program Cards

Power Cord

Pull-out lnstruction

Card contained

in

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

further

information contact your local Hewlett-Packard

Sales and Service office. (See pages

32

and

33

for

off1ce

locations.) I

K

YBOARD

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 trigonometric

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 d1splay consists

of

a ten-

digit

number and a

two-d1g1t

exponent. indicat-

ing the power

of

ten

multiplier.

NUMBER

12,345.67898

DISPLAY

1.234567898

X

104

I 234

56

7 898

0'1

FIXED

DECIMAL

POINT

: the number is displayed with the

decimal pomt correctly located. The dec1mal

wheel sets the number

of

places

to

the

nght

of

the dec1mal point. The least sign1ficant

d1g1t

1s

rounded.

lf

the number overflows

to

the left

of

the decimal point,

the

display

for

the overflowed

register reverts

to

floatmg

dec1mal point.

DECIMAL WHEEL SETTING

5

3

7

DISPLAY

I 2 3

'I

5.6

7898

12

3 4

56

1_9_

t

Leading Zeros

Blanked

t

Last

D1g1t

Rounded

Number too large for

th

is settmg -automatically

s

hift

s to

floating

decimal

point.

T.

h7

error

light

indicates an illegal operation such as

di

-

~tSion

by 0.•.

-v=:-;,

.

sin-t

x ( x >1),

ln

x

(x

<

O).

An

Illegal operatton

dunng

program execution will not stop

the program.

7

MBER

TRY

Clears

the

X, Y, Z, e

and

f

reg1

s

ters

(0

.

~

X,Y

,Z,e and

f)

.

Clear

s

the

FLAG and clears

the

ARC and HYPER condi·

trons.

Clear

s

the

X reg1ster

(0.

~

X).

Clear

s

the

ARC and

HYPEH cond1t1on

s.

lt

1s

not

necessary

to

press CLEAR x

before

each

entry

.

Chang,

es

the

s1gn

of

the

contents

of

the

X register.

Chang,es

the

s1gn

of

the

exponent

if

ENTER EXP was

pressed.

Sets

the

dec1mal

point.

lt

is

not

necessary

to

enter

the

dec1mal

pomt

when

entering

1ntegers

or

when

using

the

ENTER EXP key.

Cle91S

the

exponent and causes

the

entries

(0

to

99)

and

CHG SIGN

to

affect

only

the

exponent. The

exponE'nt

digits

are

entered

in

a serial

manner

,

with

each

new

d1git

entry

becoming

the least

significant

digit

of

the

exponent.

CLEAR

2

ENTER

EXP

1 0 0.

0.

c.

00

10

Press

mg

ENTER EXP

after

any keyboard operation, except

dig1t

entry

,

w1ll

enter

1.0

for

the

n

umber

in

X.

0.

00

CLEAR

ENTER

CHG

6 0.

00

EXP

SIGN

I.

000 000

000-06

Al l

~\EYBOARD

ENTRIES ARE DISPLAYED IN THE X

REGISTER.

SET: FLOAT

ENTER:

126.

78

0.

00

ClEAR

1 2 6 • 0.

00

t.c6

7 B oc

7 8 or

1 2 6 7 s·

ENTER

2

CLEAR

EX

P

f i

CLEAR

X

0

CL

EAR

X

C

LE

AR

X

C

HG

SIGN

CLEAR

X

CL

EAR

X

0

CLEAR

X

1

NUMBER

ENT

Y

SET: FLOAT

ENTER:

-39,800

-

3.98

X

10

4

CHG 3 9 8

SI

GN

0 or

3 9 8

CHG

SIGN

SET: FIXED

SET: Decimal wheel to 4

ENTER:

.0094

9 4 ENTER 3

EXP

or

• 0 0 9

SET: FIXED

SET: Decimal wheel to 4

ENTER:

128.0167

1 2 8 •

1 6 7

SET: Dec1mal wheel to 3

SE

T: D

ecimal

wheel to 8

S

ET

: FLOAT

ENTER: - 4x

iQ

-

I2

C

HG

4 ENTER CHG

SIGN EXP SIGN

2

0.

-3.

980

0

ENTER

EXP

4

0.

.009

'1

0.

/2

8.0 I 6 7

0

0.

I 2 8.0 I 7

00

04

1.

280

16

7 02

0.

-

'1.

00

-12

1

CO

RO

EYS

~

\ r tt n the contents of

the

dtsplayed regtsters as requtred

for

succeedmg

i r{

fl

r

to

the con

tent

s

of

X Y and

z.

--x:_L

l'JCY

\

~x

.::.:tZ

) y

X X

z

..

z

Y~Y

x

......

~x

Dupltcates the contents of X

to

the Y regtster and

shifts

the

contents

of

Y

to

the

Z regtster. Loses the contents

of

the Z

regtster. t

4 3 t

'1

.

3.

Dupltcates the contents

of

Z

to

the

Y register and shifts

the

contents

of

the Y register

to

the

X regtster. Loses the

contents

of

the X register.

t 5 t

5.

Shtft5. the contents of X

to

the

Y register,

shif

ts the con·

tents

of

Y

to

the Z register and

shifts

the contents of Z to

the

X register.

C

LEAR

9 t

rr

t 3

.1

'I I 5

ROLL

0.

t 9.

ROLL

Shifts. the contents of Z

to

the Y register, sh

if

ts t

he

con·

tents

of

Y

to

the

X regtster and

shif

ts the contents

of

X to

the

Z register.

CLEAR

ROLL

X

-}

1

2

ROLL

"'

1 I

I.

0.

2.

Exchanges the cont

en

ts

of

th

e X and Y registers. The

contents of Z are unchanged.

t t

6 3 5.

3.

5.

ARITHMET

IC

KE

YS

The arithmetic keys operate on

the

X and Y registers, entering

th

e result of the calculat1on mt

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 regist

er

is unchanged.

8 + 4

==

12

~

y

t

CLEAR

8 4 +

6 + 7 +4

-=

17

~

y

t

CLEAR

6 7 +

4 +

0.

I 2.

1.{

.

D.

I 1.

1.{

.

Subtracts the contents

of

the X

reg1

s

ter

from

the

c

ont

e

nt

s

of

the Y register. The difference

1s

entered mto the Y

register and the X register is unchanged.

1

7

-9

==

8

~

Y

CLEAR

1 t

7 9

47

-

19

- 8 + 5-=

25

~

y

t

CLEAR

4 7 1

9 - 8 -5 +

D.

8.

9.

0.

2

5.

5

1

ARIT

:TIC

KEYS

Mult1pl1es the contents

of

the Y register

by

the contents of

the X reg1ster. The product

1s

entered into the Y

reg1stHr and the X reg1ster

1s

unchanged.

CLEAR

4

9 X 7 -

63

~

Y

t

9 7 X

3 X 5 X 4 + 8 -

7.5

~

Y

t

3

X

5

8

X

•

-•

0.

63

00

7.

0.

7.

50

8.

Div~des

the contents

of

the Y register

by

the contents of

the X register. The quotient is entered into the Y regis-

ter

and the X register is unchanged.

36-;... 4

==

9

~

y

t 0.

CLEAR

3 6 4 9.

00

Lf

•

-•

72

-:-

6 7 3 +9

==

13

~

y

t

CLEAR

7 2 6 0.

/3

.

00

9.

• 3 • 9 +

--

• •

E

XAMIPLE

(3

X 4) + (6 -

9)

==

.

9~

y

(8

X

2)

6

STEP

KEY

STEP

KEY

STEP

KEY

1-

3

7-

9

13-

6

2-

~

8-

14--

-

3-

4

9-

8

15-

...

•

4--

X

10-

~

16-

-•

5-

6

11-

2

6-

+

12-

X

CON

ROL

-

STOR

AG

The Storage and Recall Keys provide access

to

the

16

storage

reg1

ster 0 1 2 1 4 5 h 7 Q a

b.c,d,e and

F.

lt

is

not

necessary to clear a register before stonng a

numb~r

wr t

stored number.

Stores the contents of X in the register ind1cated by the

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

e

or

F. The contents

of

the X register a

re

unchanged.

Stores the contents

of

Y in the register indicated by

the

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

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

CONTROL·RECALL

Press a,b.c,d.e

or

F to recall the contents

ofthat

reg1s

·

ter

to the X reg1ster. The contents

of

a, b, c,

d,

e

or

f are

unchanged. They

:1

>key

must

be

used

to

recall the con-

tents

of

the numeric registers. Pressing only 0, 1, 2. 3. 4,

5, 6, 7. 8, 9 will not recall the contents

of

that

register

to

the X reg1ster,

but

will enter

that

digit

in the X regis

ter

.

Recalls the contents

of

Fand e to the X and Y register

s.

The contents

of

fand e are unchanged.

CONTROL-STORAGE

AND

RECA

LL

Exchanges the contents

of

Y with the contents

of

the regi

s-

ter

indicated by the following keystroke: 0, 1, 2,

3,

4, 5. 6,

7, 8, 9, a.b , c.d , e

or

f . This

1s

the only mstruct1on

that

recalls the contents

of

a numeric storage register.

a

0

9.

I.

0.

9.

I.

0.

I.

9.

y~()

a

3

x~

'

>

0.

I.

3

1

~'-

~

,

r:;>J~~~

·j'

"'-

" . I '·'•·

FUN

TON'

K

YS

Select~,

the

entry

and dtsplay un1ts

for

the

trigonometnc

functtons. To convert

from

DEGREES

(RADIANS)

to

RADIANS

(DEGRE:ES):

1)

SET: DEGREES

(RADIANS)

2)

ENTER: DEGREES

(RADIANS)

3)

PRESS:

sin

x , cos

x,

tan

x

4)

SET: RADIANS (DEGREES)

5)

PRESS:

a~c

sin

x,

cos

x.

or

tan

x;

answer in RADIANS

(DEGREES)

1s

entered

mto

the

X reg1ster.

Inverse~

tngonometnc

functtons are calculated

for

the

prin-

ctpal value

of

the function.

9

Stn-

1

X;

-90

_8

t

90;

(-

7T

2<8

<-r

7T

2)

9

COS

1

x;

0

~

9

-t

180

;

(0

~

9

<

TT)

e tan 1

x;

-

90

<e

+90

;

(-

7Tf2

~

e

<+

"o/2)

EXAMPLE

sm

+135°.

+.7071;

sm-

1

+.7071-

+45.

0

Rep~aces

the

contents of the Xregister

with

the Sine

of

the

contents

of

X.

Replaces the contents

of

the X regtster wtth the Cosine

of

the

contents

of

X.

Replaces the contents

of

the

X register

with

the Tangent

of

the

contents

of

X.

Prefix used

to

calculate the tnverse

trigonometric

and hy-

perboltc functtons. The answer

ts

entered into the X regis-

ter.

Prefix used

to

calculate the hyperbolic (sinh, cosh, and

tanh)

functtons. The answer is entered into the Xregister.

EXAMP'LE:

sinh-1 2 = 1.

4436

CORRECT INCORRECT

2

arc

hyper

sin

.r

....

...

" 2 hyper

arc

sin

.r

" "

.

12

~

ERROR

sm-

~

LIGHT

FUNCTION

KE

YS

Replaces the contents

of

the X register with the square root

of

the contents

of

X.

Replaces the contents

of

the X register with the logarithm

to the base e

of

the contents

of

X.

Replaces the contents

of

the X register with e raised

to

the

power defined by the contents

of

X.

Replaces the contents

of

the X register

w1th

the

loganthm

to the base

10

of

the contents

of

X.

Integer X. Eliminates t

he

decimal part

of

the contents

of

t

he

X register.

En

ters the integer

into

the X register.

ClEAR 5 • 9

int

.r 0.

D

5.

Absolute value

of

Y. Sets the contents

of

the Y register

positive.

CLEAR

C

HG

SIGN t

5

Enters pi into

th

e X register.

IYI 0.

5.

-5.

5

1 V C 0

Convers1on

from

reetangular

to

polar

coordmates wrll cal·

culate the angle, 9,

rn

the range:

-

180

<9 < +

180

°

-

1T

radrans 9 < +

1T

radians

Changes reetangular coordrnates consistrng

of

an

x com·

ponent

rn

the X register and a y component in the Y regis·

ter

to

polar

coordrnates:

Angle

(9)

Tan-t

y x

~

Y

Radius (R) J

x2

+

y2

~

X

SET:

DEGREES

" l

CLEAR

TO

POLAR

y

4

CHG

SIGN i 3

0.

-5 3.

13

0 I

5.

Changes

polar

coordinates consisting

of

a radius (R) in the

X regrster

at

an angle (9) in the Y register

to

reetangular

coordinates:

CLEAR

2

,..

y component - R X Sin 9

~

y

x component

:=:

R x Cos 9

~

X

t

2 2 5

{X

TO

RECT

0.

-1

.0 0

00

-1

.0

000

VECTOR

KEYS

ACCUMULATE

+:

Adds the contents

oftheX

and Y regrs-

ters to the contents of the

Fand

e regrsters respectrvely.

The sums are entered mto the

Fand

e regrsters.

Fand

e

are cleared with the

CLEAR

mstructron.

f

+X

~f

e

+Y

~e

ACCUMULATE - : Subtracts the contents of the X and Y

regrsters from the contents of the

fand

e regrsters

re-

spectrvely. The drfferences are entered mto the

fand

e regrsters.

f-

X

~

f

e-

Y

~

e

Recalls the contents of

the

fand

e regrsters to

the

X and

Y regrsters respectrvely. The contents

of

fand

e are un-

changed.

CLEAR

0.

'1.

-2.

f~

X

e~

Y

t

2

CHG

SIGN

ACC

EXAMPLE: Vector Add1tron

1

RCL

ACC

+ ACC

+

0.

o.

RCL

(2x + 3y) + (4x + 5y) (3x -6y)

3x

+ 14y

STEP

KEY

STEP

KEY

STEP

KEY

1-

CLEAR

6-

5

11-

CHG

SIGN

2-

3

7-

t

12-

t

3-

t

8-

4

13-

3

4-

2

9-

ACC

+

14-

ACC

-

5-

ACC

+

10-

6

15-

RCL

EXAMPLE: Multiplrcation of complex numbers

(J2

-1)

(3

+ j4)

(-

2 +

J3)

-18

+

jl

STEP

KEY

STEP

KEY

STEP

KEY

1-

CLEAR

7-

ACC

+'

13-

In

:x

2-

4

8-

3

14-

ACC

+

3-

t

9-

t

15-

RCL

4-

3

10-

2

16-

ex

5-

TO

POLAR

11-

CHG

SIGN

17-

TO

RECT

6-

ln .r

12-

TO

POLAR

17

8 R

GRAMIMI

The Hewlett Packard Model 9100A has a maximum capa-

ctty

of

196 program steps. The 0, 1,

2,

3, 4,

5,

6,

7,

8,

9, a, b c, and d regtsters can

be

used

for

etther program

or

data storage. The

X,

Y and Z regtsters are the display

regtsters and the e and F regtsters are only data storage

regtster~.

these ftve regtsters cannot be used

for

program

storage.

Program storage conststs

of

a

14

by

14

array (see Figure

1). The regtsters are destgnated 0,

1,

2,

3, 4,

5,

6, 7, 8,

9,

a,

b,

c, and d as are the characters in each register.

Memot"Y address

c2

ind1cates the c regtster and character

2 tn

the

c regtster.

A

program

ts

stored so

that

the regtster with the

starting

addres.s

of

the

program

ts

ftlled

w1th

the program steps be-

fore

the

next sequenttal regtster

ts

entered

to

store pro-

gram

steps. Wtth

the

first

program step in location 00,

program storage wtll be used

tn

the followtng manner: 00,

01,

...

09.

Oa.

Ob,

Oe,

Od.

10

....

19,

la,

1b,

lc,

ld,

20

...

up

to

dc

, dd.

th

e address

at

which the program

coql;lter resets

to

00.

lt

ts

not

necessary

to

learn a program language for the

Calculator. Keyboard operations are the program instruc-

tlons. Each program step is one keyboard instruction.

Programs

that

require more storage than

th

e e and f regis-

ters necess1tate use of a register

that

could be used

for

program

storage. A complete reg1ster is required

for

stonng

a ten-dtgtt

number

and the two-digit exponent;

therefore.

the

maxtmum program stze

of

196 steps is re-

duced by

14

steps

for

each program register used

for

data

~o~ge.

CHARACTER

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

0

1

2 2c

3

4

5

6

C:t:

7 Program

or

Data

Storage

La.l

8

·-

(f)

9

--

<-'

La.l

a

':t: b

c

c2

d

e

f Data

Storage

...

X

y Display

z Figure 1

PROGRAMMING

Selects

the

mode

of

operat1on.

RUN:

used

to

perform

calculatJons. address the program

counter and execute a program.

PROGRAM:

used

to

enter

a program

from

the keyboard

and

venfy

a program.

Causes an uncondit10nal branch

to

the program address

entered by the next two keystrokes

or

by

the

next two

pro

·

gram steps. Each program step can

be

only

one keystroke.

CORRECT

INCORRECT

STEP KEY STEP KEY

29

2a

2b

GO

TO

( ) ( )

5

c

29

GO

TO

( ) ( l

2a 5 C

2b

Starts program execut1on

at

the present addres

s.

lf

the

program has halted execut1on

at

a STOP mstruct1on. pres

s-

ing CONTINUE will

start

program

execut1on

w1th

the next

program step.

lf

the

program

has halted execut1on

at

an

END

mstruct1on, pressmg CONTINUE

w1ll

start

program

execut1on

at

program step

00.

CONTINUE can also be

used as a

'no

operat1on'

program

step.

See

the

program

for

N!, page

26.

Halts program execut1on and causes a

return

to

the

diS·

play mode. The STOP 1nstruct1on prov1des an uncondJ·

tional

halt

of

program execut1on

for

entry

of data

or

d1s

play of results. Pressmg CONTINUE begms

program

execut1on

w1th

the next program step. Pressmg STOP

during

execution

of

a

program

will cause

the

program

to

stop execution

at

the

present

program

step and

will

cause

a

return

to

the

display

mode. Pressmg CONTINUE

will

begin program execution

with

the next

program

step.

Use the STOP

instruction

to

enter

data.

W1th

the

program

at a STOP

or

END mstruct1on any keyboard operat1on can

be

manually

executed, prov1ded

that

no data

1s

stored

tn

a reg1ster

contammg

program

steps.

Stonng

data

tn

a

reg1ster contammg program steps will

destroy

the

program

steps m

that

reg1ster

Halts

program

execut1on and causes a

return

to

the

display mode. The instruct1on resets

the

program

counter

to

00

so

that

pressing CONTINUE begins program execu-

tion

at

step

00.

END

must

be

the

last mstruct1on m a

program

. Reading

the END mstruct1on

from

the magnet1c card stops

tlle

reading process and resets

the

program

counter

to

00.

19

~

PROGRAM

.~

~·

-

-~

PROGRAMIM

NG

PROBILEM:

Wnte

a

program

to

solveAA:

~

for

any A and

8.

STEP KEY

00

CLEAR

01 STOP

02

X-+1 I

o3

e

04

J-+1)

05

f

06

X

07

08

09

Oa

Ob

-t

f

+

ROll~

•

-•

Oe

,,

Rou

t

Od

X

-:,y

10

e

11

END

X

)'

Z

0 0 0

A 8

A 8 0

AxB

A AxB

8

A+8

AxB 8

AxB

--

A+B

8

A+8

AxB

A+B

8

A

F e

0 0 Clear

display

& e &f.

A

8

Stop

to

enter

A &

8.

Store A and 8.

Move

Ax8

to

Z

to

calculate A +

8.

Pos1t1on

AxB and

A+8

to

calculate

quot1ent.

A 8

Ax8

A+B

Final Display

See ENTERING A PROGRAM-FROM THE KEYBOARD

(Page

24)

. A

blank

reg1ster md1cates the contents

of

the

reg1ster are unchanged

from

the

previous step.

Causes a

brief

d1splay before

continumg

with

execu-

tlon

of

the

program.

lf

the

PAUSE key is held de-

pressed

dunng

execut1on

of

a program, a STOP will

occur

at

the

next PAUSE

instruction

in

the

program. Pressing

CONTINUE

will

begin execution

w1th

the

next program

step. Use successive PAUSE

instructions

for

a Ionger dis-

play.

Th1s

mstruct1on

single-

steps

the

program. The display

will

de·pend upon

the

mode

of

operation: PROGRAM

or

RUN.

This

is

the

only

instruction

that

cannot be a pro-

gram

step.

PROGHAM: Smgle-steps

the

program,

displaying

in X

the

program

step address and

the

code

of

the

mstruction

in

that

program step.

EXAMPLE: 5.

lf.

I.

2-

- - - - - - - -

Slf

Program

step

12

contains the SET

FL

AG instruction; its

code

is

54.

HP 9100A Owner's manual

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