Viper 2.08 User's Guide download pdf (Page 42)

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2) UIIS TOGGL

I

F 800

BF

FSAC

AF

OF

FBEC

5F

D4

NEXI

MONTH

r

SCROLL

UP

e

ompletelJ

relocatable

TOGGL

r

LDr

$oo

PHI

RF

LDr

$AC

PLO

RF

LDN RF

xRr

$nc

STR

RF

SEP R4

FOR THE

;

Set

RF

to

$O0AC--address

;

inside

DXYIV

instruction

;

in

CHIP-

B

interpreter

a

,

;

Get byte e

$ooAC

;

Flop

from

$nC

to 00

,

or 00

to

$nC

;Put

back

to

change

speed

;Return

MYSTERY TOUR

Video

0perating

System"

by

in the schematic.

The

correet

displays

are!

pins

#

4

and

#5

of

the

top

display

is

printed

s

ehematic

.

CORRECTIONS

CORRECTIONS CORRECTIONS CORRECTIONS

OH

NUTS CORRECTIONS

VoL

I

ISSIIE

Lt,

oCT

.

19?

B PAGE

II

"Non

Joseph

Cza

jkowski

contains

an

error

p

in c onne

e

t

ions

f

or

the

HP

50

B2-?

340

#A

to

ground;

pin

#5

to

enable.

Pin

ineorrectly

hooked to

ground,

in

the

vOT,

2

ISSLE

5

NOV.

1979

PAGES

2,05,16

and

2.05,!9

"FootbaLl"

by

Frarrk Awtrev

c ontains

glut^',*gmT,lt

";l"fi"rors

!

'/W/

'

ia/z not

relz

Thanks

to Tim

Longcor

for weeding

theSe

little

buggers out.

Just

a

quick

note

that

may

be of interest to other Elf'ers

who

enjoy

the VIP

modifieation in

issue

#9

April

1979.

In addition

to

the

emor

previously

brought

to

your

attention

l,oc

"

8104

should

be

3E

not

JF

-

Irve

discovered that

some

of

the longer

prograns

in

the

RCA

game

manual

crash because

they

get

into

the

CHIP-8 display

page

relocated

at

page

7,

To correct this change

the

instruction

at

l,oc.

0CF0

from

FB07 to

F808.

A11

works

wel-l-

noWo

-

Walt

Pinner

APOI,OGIES

we had

hoped

to

never

have

to do

a

combined.

issue

-

but

here

is

just

exactly

that.

f had

pneumonia

for

three

weeks

j-n

February

and

early.March

-

and no

sooner did

r

recover

from

that

when m!

$SqSnter

(who

lives

in

California) had

a

real

catastrophe

itt

n6"

life

and

I had

to fly

back

to be

with her

for

the

next

two

weeks.

so the result

wasr no newsletter

in March.

sure

hope

this

big

fat

issue helps

make

up for

it all.

Terry

2,OB/Og

,

4Z

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