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32
APPENDIX 3
4431 MEM CIRCUIT DIAGRAM 2(5)
A
B
c
D
RD
ASCll(CPUJ~D=
2 5
~'=
10
------------------------------------------------------------~
LE(CPUJ~0=24~:=6---------------------------------------------~
2
MAO(SGJ--~
MAl(SGJ - - " " ' '
MA2(SGJ - - " " ' '
MA3(SG) --""'o
MA4(SG) --""'o
MA5(SGJ - - -
0
MA6(SGJ - - -
0
MA7(SG) - - -
0
MAB(SG) - - , ,
tJA9(SG)--"""
MAIO(SG) - - " " "
MAll(SG) - - , ,
DSI
MAO
~-----'
8
~AI
RWM
MAI
-i
A2
2048 X S
MA2
5 A4
MA3
4 A8
MA4
3
~;
2
~~~
2 A64
MA7
2
1
3 Al28
~~~
22
~~26
MAIO
19 AI024
~--
2
'-'<
1
~a2Cl/G3/F5
~---"''<162/F4
21
r
64/F4
'"'"i;·
r
A.2,3/4/5
~
DMO
t----A~,ID--1~
In
,_M_A_l_I _ _ 3 . ...,
1
rr-
4 ----+~
D24
1---
~DMI
r=J3"
DM2
1-------t~~
'
DM3
1-------- ~
DM4
_._(SJ
~DMS
~DMG
..__ _ _
___.~
DM'(
DS2
MAO
------'~'--IA!
RWM
MAI
6
~
2048 X 8
~t~
~ ~~
MA4
3
MAS
2 A32
MAG
I A64
MA7
23 A!28
MAS
A256
-----'
2
~
A512
MA9
19 Al024
MAI
0
18 2Cl/G3/F5
~__,,,20'<1G2/F4
r1!c
G4/F4
I
'i
..r::
A,2,3/415
~
DMO
1----A"",l=-ID ~ IO
.
1-----~1::11 ~DMI
1------1~.
DM2
1~~14-'
DM3
1---
-f<~
DM4
1-(Sl
~.DMS
1------ICJI:' DMG
~DM7
DS4
II
Cl
I
F2
D7~1D 2~DM7
DO ir---tllD
2~DMO
DG~ID
2~DMG
D 4
v----r31
ID
2~DM4
D5~1D
2~DMS
D3~1D 2~DM3
Di~ID 2~DMI
D2
IB~DM2
- WR ASCll(CPUl
-"'0,,_
34
,__:,,_
5
-+-------+---1~--........_-----------.--+----------+------r----l---------4
3
DO(CPU)
- - J 0
Dl(CPU)--J
0
D2(CPU)
- - J 0
D3(CPU) - - J •
D4(C?Ul
- - J O
D5(CPUl _ _
Jo
D6(CPUJ
--~•
D7(CPUJ--~
MAIO~I
MAll~2
026
BC/(()
15 G4
4
[l
12
II
10
9
DGS
MA:>
~Al
RWM
MAI
~A2
i024
X
4
MA2~A4
MA3 ~A8
MA4~Al6
MAS
~A32
MAG
~A64
MA7~Al28
MAS
~A256
MA9
'---.lL
A512
DG9
MA:>
~Al
RWM
MAI
~A2
J024 X 4
MA2~A4
MA3 ~A8
MA4
~Al6
MAS
~A32
MAG ~A64
MA
7
"----11--
Al28
MAS
~A256
MA9
"--1L
A512
...._---=
1 }--a2Cl/G3/F5
~/F4
__["
.__ _ _ __,_,,l~-0 2Cl/G3/F5
~2/F4
r
A,2,3/415
~
A TO
1------'A.""ID=-!~
13
~---ll
::12
~
A Tl
1------lk-:JL_
AT2
L_ _ _ _
-.Jl"'"""'-'l
A
T3
A.2.3/4/5
~
A TO
1----'""'A.1"-ID
~
13
1------11::12
~AT!
1------1
1
~-11
.
A T2
~AT3
DG7
MA
0
I'--
~-1AI
RWM
MAI
~A2
i024 X 4
MA2 ~A4
MA3 ~A8
MA4
~Al6
MAS
!'---H
A32
MAG
~A64
MA7
~Ai28
MAS
l~A256
MA9
'-.....1.L
A512
DGG
MAO !'--4--AI
RWM
MAI
~A2 J024 X 4
MA2
~A4
MA3 i'--4-Aa
MA4
~Al6
MA5
~A32
MAG
i'--:l-
A64
MA-(
f'4-
Al28
MAS
~A256
MA9
~A512
~--=
1
~-._-o2Cl/G3/F5
~/F4
.J:
~---=l~-<12Cl/G3/F5
~G2/F4
....c:
~AT!
~AT2
~AT3
A,2,3/415
~
ATO
A.ID
r:"'
A,2,3/4/5
~
A TO
i-----=A,l"""'D
}<El
13
..__ _
___,~~
A
Tl
i....:..,.JL__ AT
2
.._ _ _
__.1~~
-------AT3
E
DSS
"O
llF2
DM7 r--f-1
2~D7
DMO v - - J l
2~DO
DMG v---a--1
2
~
DG
DM4~1
~D4
DMS~DS
DM3~D3
DMI
v-----f9~DI
DM2
~D2
DM7(VG)
DM6(VG)
DM5(VGJ
LlM4(VGl
DM3(VG)
v---
DM2(VG)
DMl(VGJ
DMJ('/GJ
~--ATO(VG)
•~--ATl(VGI
•~--AT2(VGJ
•~--AT3(VG)
·L
(SJ
'------------''-""-.r------,,----''------------J~--1------------------------/
I
MEM SH(SGl 020:3
RD A TT.(CPUl 025:9
WR ATT.(C?Ul 025: 7
4
II
DS3
I
C1
D71
I
c___,_19~F2
DO
·~---~1_,__,7
1D
16
4
L!5L___11ATO
DI
4 ~ 5
6
I 7
A Tl
D2
3
l:p
2
2 !-------:- 3
A T2
D3
7r;;:;
6
8
~
9
AT3
D4
13
IE
12
DO
II
~
12
0
D7
181~
19
D3
13
~
14
2
.______
LL-...
3
'----+--+--1J_v
_ _ , 9 ' - - 1 ~ ~
o
I R
A T2 "--'3~
,,2,______,_ 2
~I
.4
A
T3
S
ID
..J______
AT!
ii 'I0-10
(
!~
AT
0
----li.!ffi=jt"l~5
---,J
0
g~
1:~Ll5 g4
:~--1
2
1
: :
I
'--------------../
D 57 ' . 3 CURSOR BLINK(VGJ
'----><o
5 . ,, 7 _,. 2 : ...BLINK RATE(VGl
.__ _
__..o
5
~
7
_: 4 o-LINE/BLOCl<(VGl
.__ _ _ __,D= 5 ,.;, 7
'=-
5 SCREEN REV(VG)
Circuit Boord:
1141 93 30--00
051,052
24
12
053,054,055,J71
20
10
066,067,068,::>69
18
9
026,070
16
8
024
14
7
IC
+5'1
OV
Pin Number/ DC-Supply Vo! tage
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