8800 CPU BOARD ASSEMBLY Integrated Circuit Installation There

8800 CPU BOARD ASSEMBLY Integrated Circuit Installation There

8800 CPU BOARD ASSEMBLY
Integrated C i r c u i t I n s t a l l a t i o n
There are 18 i n t e g r a t e d c i r c u i t s [ I C ' s )
t o be i n s t a l l e d on t h e 8800 CPU Board.
One o f these, t h e 8080 CPU I C , w i l l be
prov'dud w i t h a a0-pin I C socket. The
go80 I C i t s e l f should n o t be i n s t a l l e d
;nto t h e socket u n t i l t h e e n t i r e board
i s ready t o be i n s t a l l e d i n t h e 8800.
( ) R e f e r r i n g t o t h e component l a y o u t ,
s e t t h e 40-pin I C socket i n c l u d e d
i n ;.lour k i t i n t o place, 2nd secure
i t w i t h a p i e c e o f masking tape.
( s ~ cdrawing be1 ow 1
( ) T u r ~t h e board over and :older each
? ; c t c t h e f o ? l p a t t e r n ?n t h e back
s f d e c f t h e board. Be sure t o s o l der each p i n and be c a r e f u l n o t t o
leave any s o l d e r bridges.
( ) T u r n the board over again and remove t h e masking tape.
Fi."zlxq-i ng t o t h e component 1ayout ,
renlrJ\/e t h e I C w i t h t h e c o r r e c t p a r t
nunlbcr from i t s holder. I f t h e r e
a r e any bent pins, s t r a i g h t e n these
u s <~g needl e-nose p l i e r s . Ensure
t h a t you choose t h e I C w i t h t h e c o r r e c t p a r t number as you i n s t a l l each
one.
( ) O r i e n t t h e I C so t h a t i t s notched
end corresponds w i t h t h e notch p r i n t ed on t h e PC board, and p i n 1 o f t h e
IC corresponds w i t h t h e pad marked
w i t h an arrowhead on t h e board.
rlOTE: I f t h e 1C does n o t have a notch
on one end, r e f e r t o t h e I C O r i e n t a t i o n
Chart i n c l u d e d w i t h your manual f o r t h e
identification o f p i n 9.
( ) When you have t h e c o r r e c t o r i e n t a t i o n , s t a r t t h e p i n s on one s i d e o f
t h e I C i n t o t h e i r r e s p e c t i v e holes
on t h e silk-screened s i d e o f t h e PC
board. DO NOT PUSH THE P I N S IN ALL
I f you have d i f f i c u l t y
THE WAY.
g e t t i n g t h e p i n s i n t o t h e holes,
use t h e t i p o f a small screwdriver
t o guide them.
S t a r t t h e p i n s on t h e o t h e r s i d e o f
t h e I C i n t o t h e i r holes i n t h e same
manner. When a l l o f t h e p i n s have
been s t a r t e d , s e t t h e I C i n place
by g e n t l y r o c k i n g i t back and f o r 5 1
u n t i l i t r e s t s as c l o s e as p o s s i b l e
t o t h e board. Make sure t h a t t h e I C
i s p e r f e c t l y s t r a i g h t and as c l o s e
as p o s s i b l e t o t h e board; then tape
i t i n place w i t h a piece of maskins
tape.
( ) Turn t h e board over and s o l d e r eac!i
p i n t o t h e f o i l p a t t e r n on t h e back
s i d e of t h e board. Be sure t o s o l der each p i n and be c a r e f u l n o t t o
leave any s o l d e r bridges.
( ) Turn t h e board over again and remove
t h e piece o f masking tape.
-Use t h e same procedure t o i n s t a l l each
o f t h e IC's. Be sure t h a t you have t h e
c o r r e c t p a r t number and t h e c o r r e c t o r i e n t a t i o n as you i n s t a l l each one.
-
Hardwire Jumper Connections
There a r e 5 jumper connections t o be
made on t h e 8800 CPU Board.
A l l o f t h e jumper connections on t h i s
board a r e t o be made i n t h e same manner.
These connections a r e i n d i c a t e d on t h e
board by two pads marked w i t h t h e same
d e s i g n a t i o n and connected by a broken
l i n e . ( i - e . , ~l------------51)
Use t h e w i r e provided i n y o u r k i t f o r
jumper connections and c u t each one t o
l e n g t h as needed.
( ) Connect pad J1 t o pad J1 by i n s e r t i n g t h e w i r e ends from t h e s i l k screened s i d e o f t h e board and s o l d e r i n g them t o t h e f o i l p a t t e r n on
t h e back side. C l i p o f f any excess
l e a d lengths.
( ) Connect 52 t o 52 and 53 t o 53, etc.,
i n t h e same manner. Be sure you
connect t h e pads w i t h t h e same des i g n a t i o n each time.
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Capacitor I n s t a l l a t i o n
There are 28 ceramic disk and 4 electrol y t i c capacitors t o be i n s t a l l e d on the
8800 CPU Board.
Refer t o the component layout and ins t a l l the ceramic disk capacitors according t o t h e following procedure.
ELECTROLYTIC
CAPACITOR
( ) Choose the capacitor w i t h the cor-
r e c t value as called f o r in the instructions. Straighten the two
leads and bend them as necessary t o
f i t t h e i r respective holes on the
PC board.
( ) Insert the capacitor i n t o the cor-
r e c t holes from the silk-screened
s i d e of the board. P u s h the capacit o r down until the ceramic insulation almost touches the f o i l pattern.
( ) Holding the capacitor in place, t u r n
the board over and bend the two leads
s l i g h t l y outward.
( ) Solder the two leads t o the f o i l
pattern on the back s i d e of the
board; then c l i p off any excess
lead lengths.
One type will have plus (+) signs on the
positive end; another will have a band
o r a groove around the positive s i d e i n
addition t o the plus signs. The t h i r d
type will have an arrow on i t ; i n the t i p
of the arrow there i s a negative ( - ) sign
and the capacitor must be oriented so the
arrow points t o the negative polarity
side.
Referring t o the component layout, i n s t a l l the e l e c t r o l y t i c capacitors on the
board.
( ) Bend the two leads of the capacitor
w i t h the correct value a t r i g h t an-
I n s t a l l a l l of the ceramic disk capacit o r s in t h i s manner. Be sure t h a t you
have the correct value capacitor as you
i n s t a l l each one.
The four e l e c t r o l y t i c capacitors f o r the
CPU Board have polarity requirements
which must be noted before i n s t a l l a t i o n .
Those contained in your k i t may have one
or possibly two of three types of polari t y markings. To determine the correct
orientation, look f o r the following:
(see drawing above r i g h t )
gles t o match t h e i r respective holes
on the board. I n s e r t the capacitor
i n t o the holes on the silk-screened
s i d e of the board. Be sure t o align
the positive polarity s i d e w i t h the
"+" signs printed on the board.
( ) Holding the capacitor i n place, t u r n
the board over and bend the two leads
s l i g h t l y outward. Solder the leads
t o the f o i l pattern and c l i p off any
excess 1ead 1engths
.( ) Instal 1 the other e l e c t r o l y t i c capaci t o r s i n the same manner.
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Crystal Instal l a t i o n
Zener Diode I n s t a l l a t i o n
There i s one 2.000MHz c r y s t a l t o be i n s t a l l e d on t h e 8800 CPU Board.
There i s one 5.1 v o l t and one 52 v o l t
zener diode t o be i n s t a l l e d on t h e 8800
CPU Board.
( ) R e f e r r i n g t o t h e drawing below, c u t
a piece o f t h e cardboard c o n t a i n e r
t h a t t h e c r y s t a l i s packaged i n t o
t h e same l e n g t h as t h e c r j l s t a ? case
itse: f.
-
NOTE: D<odes are marked w i t h a band on
one end i n d i c a t i n g t h e cathode end. The
diode must be o r i e n t e d so t h a t t h e end
w i t h t h c band i s towards t h e band p r i n t ed on t h e bnard when being i n s t a l l e d .
7
CARDBOARD
( ) Referring t o t h e com?onent l a y o u t ,
bend t h e leads on t h e 12 v o l t zener
a t r i g h t angles t o match t h e c o r r e c t
holes on t h e board.
( j I n s e r t t h e diode i n t o t h e c o r r e c t
holes from t h e silk-screened s i d e
o f t h e board. Turn t h e board over
and bend t h e two leads s l i g h t l y
outward.
( ) Using needle-nose p l i e r s , bend t h e
two leads o f t h e c r y s t a l a t r i g h t
angles as i n t h e drawing above.
( ) Solder t h e two leads t o t h e f o i 1 p a t t e r n on t h e back s i d e o f t h e board;
then c l i p o f f any excess l e a d lengths.
( ) I n s e r t t5e c r y s t a l i n t o the correct
h o l cs from t h e s i 1k-screened s r 6.e
o f t h e board. (see com?ownt l a y out)
( ) I n s t a l l t h e 5.1 v o l t zener diode i n
t h e same manner.
( ) tiolding t h e c r y s t a l i n place, tcrrn
t h e l10drd over and berld t h e two
leads s l i g h t l y outward.
i'e sure t h a t you have t h e band on t h e
clicde a l i g n e d w i t h t h e band p r i n t e d on
t h p Soard f o r both diodes before proceeding. F a i l u r e t o o r i e n t these two
l i ~ d e sc o r r e c t l y may r e s u l t i n permanent
darnace t o your u n i t .
( ) Solder t h e leads t o t h e f o i l p a t t c r n
on t h e back s i d e o f t h e board; then
c l j p o f f any excess l e a d lengths.
2 . 0 0 0 MHr
( ) Place t h e p i e c e o f cardboard over
t h e c r y s t a l case as i n d i c a t e d i n
t h e drawing.
90° BEND
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Tranaistor Installation
( ) Orient t r a n s i s t o r Q1 (CS4410) so
t h a t t h e lead nearest the f l a t edge
~ ~ i g ~c 5s t hthe hole marked "El' on
the boara. Insert the t r a n s i s t o r
NOTE: When i n s t a l l i n g t h i s tranr s t o r ,
ensure t h a t you check t.i-~etIi:ri; r ? i ~ r , ; h ~ ~ ~
i n t o the ~ C ; Q S f r o 7 the s i l k on i t before so!derin9 i t i r l t c i v;;\r,e.
screered s ~ c ?o f the board.
Some t r a n s i s t o r s are idenl,ics:
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sical appearance b u t d j f f e r -l i~ ,;l,cctri , ,! H o i r l P;,! the t r a n s i s t o r in place,
cal c h a r z c t e r i s t i c s . I f the ?a%-+,31J!'lt u x t!:e 5oard over and bend the
bers of' your t r a n s i s t o r s do nc;? v;ttc.k
t h w e 1e a d s s' i 3htly outward.
the numbers cal't ed for i n t t i e inst!,-ICt i o n s , i t may be t h a t you have subs t i ( j Solder t h e ?q:ads t o the f o i l pattern
tutions. In t h i s case, r e f e r t o :;3e
on t h e b a c ~side of the board; then
Transi s i o r Iaenti f icat-ion Char$ i ncl udc;ip a i i any excess lead lengths.
ed with your manual.
There i s oqe CS44lO N P N transSstor t o
be installed on the 8800 CPU Board.
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a f l z t edge n e a r one r" t h e , e ? d ~ .
The l e a d nearest tii:. f l 3 t -.rIcre i s
called t h e enii t t e r . The Pa:e -',:
the err!<t t e r i s ~!iar!<el
w' -i ' ' .? i ; ,3 n the board.
i f t h ? r!-i:i t t e r lepe
i s placed ir", t h i s k ~ o i e ,
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two leads should * i t 'nlc / h r : r
holes with l i t t l e or no b s n d ' n q a n d
should n o t cross o v e r each, oti1::r.
(see drdwi ng bei ow)
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Voltage Regulator I n s t a l 1a t i o n
There i s one MC7805 5 - v o l t r e g u l a t o r t o
be i n s t a l l e d on t h e 8800 CPU Board.
( ) Set t h e MC7805 i n place on t h e board
and a l i g n t h e mounting holes. (see
drawi ng )
( ) Use a p e n c i l t o mark t h e p o i n t on
each o f t h e t h r e e leads where they
1 i n e up w i t h t h e i r r e s p e c t i v e holes
on t h e board.
( ) Use needle-nose p l i e r s t o bend each
o f t h e t h r e e leads a t a r i g h t angle
on t h e p o i n t s where you made t h e
penci 1 marks.
NOTE: Use heat-sink grease when i n s t a l l i n g t h i s component. Apply t h e
grease t o a l l surfaces which come i n
c o n t a c t w i t h each other.
LOC KWASHER
( ) R e f e r r i n g t o t h e drawing, s e t t h e
r e g u l a t o r and heat s i n k i n place on
t h e silk-screened s i d e o f t h e board.
Secure them t o t h e board using a
#6-32 nut. Hold t h e r e g u l a t o r i n
place as you t i g h t e n t h e n u t t o
keep from t w i s t i n g t h e leads.
( ) Turn t h e board over and s o l d e r t h e
t h r e e leads t o t h e f o i l p a t t e r n c i
t h e back s i d e o f t h e board. Be sure
n o t t o leave any s o l d e r bridges.
( ) C l i p o f f any excess l e a d lengths.
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8800 CPU
BD RE5
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Wafer Connector Installation
There i s one 8-pin male connector to be
installed on the 8800 CPU Board.
( ) Referring to the drawing below, in-
( ) Holding the connector in place, turn
the board over and solder the 8 p i n s
to the f o i l pattern on the back side
s e r t the 8-pin wafer connector into
the correct holes on the board from
the silk-screened side. Be sure to
insert the side w i t h the shorter
of the board.
pins.
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CPU BOARD
1K STATIC MEMORY BOARD ASSEMBLY
Integrated C i r c u i t I n s t a ll a t i o n
There a r e 20 i n t e g r a t e d c i r c u i t s ( I C ' s )
t o be i n s t a l l e d on t h e 8800 1K S t a t i c
Memory Board. Some o f these are MOS
I C ' s and a r e very s e n s i t i v e t o s t a t i c
e l e c t r i c i t y and t r a n s i e n t voltages.
Read t h e FlOS I C Special Hand1i n g Precautions sheet i n c l u d e d w i t h your manual
b e f o r e proceeding.
( ) Referring t o t h e component l a y o u t ,
remove t h e I C w i t h t h e c o r r e c t p a r t
nun!ber froni i t s holder. I f t h e r e
are any bent pins, s t r a i g h t e n these
using needie-nose p l i e r s . Ensure
t h a t you choose t h e I C w i t h t h e corr e c t p a r t number as you i n s t a l l each
one.
( ) O r i e n t t h e I C so t h a t i t s notched
end corresponds w i t h t h e notch p r i n t ed on t h e PC board, and p i n 1 o f t h e
I C corresponds w i t h t h e pad marked
w i t h an arrowhead on t h e board.
NOT:
I f t h e I C does n o t have a notch
on one end, r e f e r t o t h e I C O r i e n t a t i o n
Chart i n c l u d e d w i t h your manual f o r t h e
i d e n t i f i c a t i o n o f p i n 1.
( ) When j/ou have t h e c o r r e c t o r i e n t a t i o n , s t a r t t h e p i n s on one s i d e o f
t h e I C i n t o t h e i r r e s p e c t i v e holes
on t h e s i l k - s c r e e n e d s i d e o f t h e PC
board. 00 NOT PUSH THE PINS I N ALL
THE MAY.
I f you have d i f f i c u l t y
g e t t i n g t h e p i n s i n t o t h e holes,
use t h ? t i p o f a small screwdriver
t o guide them.
S t a r t t h e p i n s on t h e o t h e r s i d e o f
t h e I C i n t o t h e i r holes i n t h e same
manner. When a1 1 o f t h e p i n s have
been s t a r t e d , s e t t h e I C i n place
by g e n t l y r o c k i n g i t back and f o r t h
u n t i l i t r e s t s as c l o s e as p o s s i b l e
t o t h e board. Make sure t h a t t h e IC
i s p e r f e c t l y s t r a i g h t and as c l o s e
as p o s s i b l e t o t h e board; then tape
i t i n place w i t h a piece o f masking
tape.
( ) Turn t h e board over and s o l d e r each
p i n t o t h e f o i l p a t t e r n on t h e back
s i d e o f t h e board. Be sure t o s o l der each p i n and be c a r e f u l n o t t o
1eave any s o l d e r bridges.
( ) Turn t h e board over again and remove
t h e piece o f masking tape.
Use t h e same procedure t o i n s t a l l each
o f t h e I C ' s . Be sure t h a t you have t h e
c o r r e c t p a r t number and t h e c o r r e c t o r i e n t a t i o n as you i n s t a l l each one.
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Capacitor I n s t a l l a t i o n
There a r e 21 ceramic d i s k and 2 e l e c t r o l y t i c c a p a c i t o r s t o be mounted on t h e
8800 1Y S t a t i c Memory Board.
Refer t o t h e component l a y o u t and i n s t a l l t h e ceramic d i s k c a p a c i t o r s acc o r d i n g t o t h e f o l l o w i n g procedure.
ELECTROLYTIC
CAPACITOR
( ) Choose t h e c a p a c i t o r w i t h t h e c o r r e c t v a l u e as c a l l e d f o r i n t h e i n s t r u c t i o n s . S t r a i g h t e n t h e two
l e a d s and bend them as necessary t o
f i t t h e i r r e s p e c t i v e h o l e s on t h e
PC board.
( ) I n s e r t the capacitor i n t o the corr e c t holes from the silk-screened
s i d e of t h e board. Push t h e capacit o r down u n t i l t h e ceramic i n s u l a t i o n almost touches t h e f o i l p a t t e r n .
( ) H o l d i n g t h e c a p a c i t o r i n place, t u r n
t h e bcard o v e r and bend t h e two leads
s l i c j h t l y outward.
One t y p e w i l l have p l u s (+) s i g n s on t h e
p o s i t i v e end; a n o t h e r w i l l have a band
o r a groove around t h e p o s i t i v e s i d e i n
a d d i t i o n t o t h e p l u s signs. The t h i r d
t y p e w i l l have an arrow on it; i n t h e t i p
o f t h e arrow t h e r e i s a n e g a t i v e ( - ) s i g n
and t h e c a p a c i t o r must be o r i e n t e d so t h e
arrow p o i n t s t o t h e n e g a t i v e p o l a r i t y
side.
/
( ) Solder :he two l e a d s t o t h e f o i l
p a t t e r n on t h e back s i d e o f t h e
board; t h e n c l i p o f f any excess
1ead 1enyths
.
I n s t a l i a l l o f t h e ceramic d i s k capaci"rs i n t h i s manner. Be s u r e t h a t you
nave the c o r r e c t v a l u e capaci tot, as you
i n s t a l l E Z C ~one.
The two e l e c t r o l y t i c c a p a c i t o r s f o r t h e
memory bor?rd have p o l a r i t y r e q u i rernents
which r u s t be n o t e d b e f o r e i n s t a l l a t i o n .
Those con?:ained i n y o u r k i t may have one
o r p o s s i b l y two o f t h r e e types o f p o l a r i t y markings. To determine t h e c o r r e c t
orientation, look f o r the. following:
(see drawing above r i g h t )
R e f e r r i n g t o t h e component l a y o u t , i n s t a l l t h e e l e c t r o l y t i c c a p a c i t o r s on t h e
board.
( ) Bend t h e two l e a d s of t h e c a p a c i t o r
w i t h t h e c o r r e c t v a l u e a t r i g h t ang l e s t o match t h e i r r e s p e c t i v e h o l e s
on t h e board. I n s e r t t h e c a p a c i t o r
i n t o t h e h o l e s on t h e s i l k - s c r e e n e d
s i d e of t h e board. Be s u r e t o a l i g n
the positive p o l a r i t y side with the
"+" s i g n s p r i n t e d on t h e board.
( ) Holding the capacitor i n place, t u r n
t h e board o v e r and bend t h e two l e a d s
s l i g h t l y outward. S o l d e r t h e leads
t o t h e f o i l p a t t e r n and c l i p o f f any
excess 1ead 1engths.
( ) I n s t a l l t h e second e l e c t r o l y t i c cap a c i t o r i n t h e same manner.
-
Voltage Regulator I n s t a l l a t i o n
There i s one MC7805 5 - v o l t r e g u l a t o r t o
be i n s t a l l e d on t h e 8800 1 K S t a t i c
Memory Board.
;
) Set t h e MC7805 i n place on t h e board
and a l i g n t h e mounting holes. (see
drawing )
( ) R e f e r r i n g t o t h e drawing, s e t t h e
r e g u l a t o r and heat s i n k i n place on
t h e silk-screened s i d e o f t h e board.
Secure them t o t h e board using a
#6-32 nut. Hold t h e r e g u l a t o r i n
place as you t i g h t e n t h e n u t t o
keep from t w i s t i n g t h e leads.
( ) Use a p e n c i l t o mark t h e p o i n t on
each o f t h e t h r e e leads where t h e y
1 ine up w i t h t h e i r r e s p e c t i v e holes
on t h e board.
( ) Turn t h e board over and s o l d e r t h e
t h r e e leads t o t h e f o i l p a t t e r n on
t h e back s i d e o f t h e board. Be sure
n o t t o leave any s o l d e r bridges.
( ) Use needle-nose p l i e r s t o bend each
of the t h r e e leads a t a r i g h t angle
on t h e p o i n t s where you made t h e
penci 1 marks.
( ) C l i p o f f any excess l e a d lengths.
NOTE: Use heat-sink grease when i n s t a : l i n s t h i s component. Apply t h e
grease t o a l l surfaces which come i n
c o n t a c t w i t h each other.
Hardwire Jumper Connections
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There are seven jumper connections to be
made on the 8800 1K S t a t i c Memory Board.
( ) One jumper i s indicated on the board
by two pads marked " J l " connected
with a broken l i n e .
( ) Insert the two ends of the jumper
wire from the silk-screened side of
the board i n t o the correct holes.
( ) Solder the wire ends to the f o i l
pattern on the back side of the
board; then c l i p off any excess
lead lengths.
The remaining s i x jumpers can be made
using uninsulated wire or the leftover
leads clipped off of previously i n s t a l led components.
( ) These s i x jumpers are located i n the
-
bottom r i g h t corner of the board,
between IC's A and B.
( ) There i s a row of 12 pads next t o
IC A , and a row of 6 pads d i r e c t l y
opposite next t o IC B. Each of the
pads in the row of 6 i s t o be connected t o one of the pads in the
row of 12.
( ) S t a r t with the bottom pad in the
row of 6 pads and connect i t in the
same manner as above t o the bottom
pad in the row of 12.
( ) In the same manner, connect each of
the remaining pads in the row of 6
to every other one of the pads i n
the row of 12. S t a r t a t the bottom
and work up. This should leave the
top pad in the row of 12 empty.
-1_12__
11 I;- +., i d ;
Power J u ~ ~ l p eConnections
r
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There a r e two h a r d w i r e connections t o be
r:~aae on t h e back (non s i 1 k-screened;
side o f the 8800 1K S t a t i c Memory Board.
( ) K e f e r r i q g t o t h e drawing below, conr i e ~ tp i n s 7 and 14 t o t h e a p p r o p i a t e
lancs on t h e board as shown.
NOTE: Be v e r y c a r e f u l when making these
ccnnections. The connections t o t h e I C
a r e made d i r e c t l y t o t h e p i n s themselves.
Check t o make s u r e you do n o t l e a v e any
solder bridges o r shorts t o other pins
o r l a n d s on t h e board.