NEC Advanced Personal Computer System Reference Manual page 67

Controller PCB
CRT
REFRESH
MEMORY
CRT
CONTROL
CLOCK
D
D
D
I '
I
1
I
1 1
0
D
D
~
6116
1
,
1
~
ARITHMETIC
PROCESSING
LSI
(OPTIONAL)
D
0
0
D
D
,
1
1
~::
6116
D
1
'0
I
I
ID
GJo
I
D
D
D
D
D
0
D
D
I
COMMCNICA T10N
LSI
I
1 TM3
1
~
..
0 0
DD
COMMliNICA T10N
INTERFACE
CONNECTOR
CRT UNIT
INTERFACE
CONNECTOR
FDD
CONTROL
CLOCK
FDD
INTERFACE
CONNECTOR
SPEAKER
INTERFACE
CONNECTOR
VOLUME
INTERFACE
CONNECTOR
CRT CONTROL LSI SOllND LSI FDD
CONTROLLER
Figure 3-1 Controller PCB
3-2