AMSTRAD CTM644 - CPC6128 System Function Diagrams

CPC6128 FUNCTION DIAGRAMS
FUNCTION FOR A I1ICROCOI1PUTER AND IC's
ICI08 ICI07
IC 1/1
ADRESS
BUS
-A2
I-AI
o -Ao
-GND
8 -RFSH)SYSTEI1
7-11] CONTROL
6 - RESET~to~TROL
-DUSRO CPU
- BUS
4 - WA IT CONTROL
3-BUSAK
2 -lJRjSYSTEI1
I -IW CONTROL
L- ........J
ADRESS
BUS
Vo
PORTA
WRITE
CONTROL
3 -RESET
INPUTS
o
I1AI
I1A2
I1A3
Vee
---..... __ ----r-
KEYBOARD SW,
CONNCTOR NO.
234 5
6
8
10
~PD
765A
VCC
RWISEEK
lCT/DIR
FR/STP
HDl
ROY
WP/TS
FlT/TRC
PSo
PS1
WDA
USo
U
S
1
HD
MFM
WE
VCO
RD
ROW
l..... ---.,....::.:r
WCK
RESET
R5
ViR
CS
AO
DBO
DB1
DB2
DB3
D
B
4
DB5
DB6
DB]
ORO
DACK
TC
lOX
INT
ClK
GND
q
5
4
7
6
3
II
12
II
DEL
!
1/
II
"
ESC
Q TAB
A
APc, Z
1
2
LOCK
11$
If 1+
II
If
IJ
If 1/
IJ
4 3
E W
S
D
C
X
11&
1/,;,
IJ
1/ II
If
I
6
5
R T
G F B
V
lie
II I
II II If
II II
1/
I
8 7
U Y H
J N
SPACE
KEY
1/
1/)
If
II
If
II
If
11<
I
-
If;
9
a I L
K
M
•
Ifi- 11=
1/ I
If
1/+
IJ;(
II?
I
>
t
-
I
P
;.- @
.
1/
II
If If
1/
II 1/
I
CLR
[
ENTE
]
4
ISH~~
"
CTRL
-R
f
If
'f
1/
II If
I
.-
COPE 7
8
5
1
2
If;
II
If
II
1/
If 1/
I
t
--.
+
9 6 3
ENTE
.
-R
ICI02
ANALOG
CHANNEL C
TEST I 2
Vee
ANALOG
CHANNEL B
ANALOG
CHANNAL A
Vss
lOA?
lOA.
IOAs
IOA4
IOA3
IOA2
lOA I
lOAD
6