S*T J
Midwl'J ''RalltX'' Test Mode 0 _ 0_ 0_ 0_
0 0 0
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Game is in test mode for a moment immediately after power
is turned on or when test switch is on. When test switch is
returned to "OFF" the game goes into attract mode.
1. ROM TEST
The ROM data are checked 4K bytes at a time, and
then checked together over all. If there are irregu-
larities, the screen will display, for example, "ROM
l" or the like, identifying the bad ROM by number.
The test series will not proceed to the RAM test.
When there are no irregularities, "ROM OK" will
be displayed and the RAM test will then be
performed. The character ROM is not checked.
2. RAM TEST
Each of the 12 ICCs numbered 2114 are checked
and when any irregularity is found a message (e.g.
RAM 11) is displayed and the test series stops. If
there are no irregularities, tests of game sounds
and switches can begin.
The RAM test is performed only onlCCs numbered
2114.
The position of the RAMs on the PCB
as given by the RAM test message
Test Message
Position of RAM on PCB
RAM 1L
6C
RAM 1H
6A
RAM 2L
6D
RAM2H
68
RAM 3L
6K
The position of the ROMs on the PCB
as given by the ROM test message
Test Message
Position of ROM and PCB
ROM 1
1B or 1C
1B
ROM 2
1D or 1E
1D
ROM3
1H or 1J
1H
ROM4
1Kor 1L
1K
MB8516
(EPROM)
UPD2332
TMM333
,
10
1K
UPD2364
APRIL 1981
RAM3H
6J
RAM 4L
6L
RAM4H
6H
RAM SL
6M
RAM SH
6F
RAM 6L
6N
RAM6H
6E
■■■■■■■■■■■■■■■■
in one chip
'Big computer ;reakthfougb'
Firnl reveals
•
processors
in uucrO
UPI1 - The
.
increasingly
Besides making . ons possible
mplex computer fun~w chip wi\\
ALO AL TO, Calc~rp. has an· : high speeds, th: ~ower mar~et
ilewlett-Pack~rd ment of an ultr~- ultimately resu!d the fast-grow:!
nounce~ devde ~~puter chip cap~ ;
prices and e~~ctronic products,
sophisucate c . orrnation conta111
market for e .
d. rocessing the~ e second.
kesman said. • r breakthrough
. pl 0()() books m on developed a spo " This is a maJO uters sma\ler,
m ,
• t have
()()() t an-
.
ake comP
rf l " the
Scienus s 'th a 450 , • r th
that will m
ore powe u ,
computer ch!P w1 a\(.ing it by f~r e faster, and a lo~ m
sistor capacity, m d sophisUcated spokesman sai~- - a standard one-
most powerf~l ~ the world, a
The new chiP uare inch - was
-puter chiP
h. gh technology
. teenth of a sq ~- of engineers
co...
f r the i
six
d b a teo.,u
B ers
spokesman o
the develope d' y ctionofloseph ey
ti
said.
gh vaults
derthe ire
urn The breakthrou arther ahead in un d J.M. Mikkelson. a professor ~f
United States even ~e more power- an Wi\\iarn ~ld~arn;t the University
the global race tom ,, the spokesman electrical en~ee~;keley, called the
fu\ " microprocessors,
.
of California - ~incredible."
• d
are
uny
armouncement OT a babY com·
sai Microprocessorsmbine memo~
"THIS I~~ tisabigcomputer
omputers that ~o g\e silicon chiP•
uter," he said. _ I - and it uses the
~d logic on ~ sin ins" that co~trol ~ all on one ch! technology yet
e the bra
u·tes video
t advance
TheY ar
e sate 1 ' th
mos
computers, sp:ousands of o er reported.
.
rtant, the most
arnes, and . s
"It' s vefY impa But we' re so
!1ectr~l d:~;T s~phit~:!:t
powe~l y~t ::s:!~ss. f:vefY
in.
ors previous y
the
·aded m this . incredible, soi ,,
tnicroprocess ntained rough\Y
)there is someth!-ng dible advance.
oped have co 00 ()()() transistors.
·ust one more mer~ in prototype,
uivalent of 2 . , roduced todaY l The chiP remains n readied for
~ost computer ~~~l:~t of 40 ,OOo to
and it has not y~~~;:ckard officials
ntain the e':\u1
th market, Hew e
co ()()0 transistors.
~
70,
said.
Y~~
Seeburg
''SMC 1 ", "SMC 2"
Potential SPKR
Damage by Clarence Davis
When removing lower panel
assembly, first remove 6 pin
connector on your left side
as you face the machine,
then hook your finger under
the lid catch pin. Lift straight
up and toward you. By using
this method, serious damage
to your speakers can be
avoided.
3