Service Manual

No.
I
110
Name Function
4!
!
0
VBUS15 Address/data bus (Syscon)
42
NC
Not connected. -
43
NC
44
FOAO
45 0
FOAl Address bus (FBO)
46 FOA2
47
I
-
VSS Ground for 1/0 pin
48
0
FOA3
Address bus (FBO)
49
I
0
FOA4
Address bus
50 0
FOAS Frame buffer (FBO)
51 0 FOA6
Address bus (FBO)
52
-
vee Power supply
53
FOA7
54
0
FOA8
Address bus (FBO)
55 FOA9
56
0
FOCSN
Chip select (FBO)
57
-
vss Ground for internal circuit
58
0
FOWEN
Write enable (FBO)
59 0
FOCLK
Clock (FBO)
60
0
FRRASN
Row address asserted (FBO)
6!
0
FOCASN
Column address asserted (FBO)
62 0
FOLDQM
Lower byte input/output mask (FBO)
63
0
FOUDQM
Upper byte input? output mask (FBO)
64
-
vss Groun for 1/0 pin
65
FODO
66
FODl
67
0
FOD2 Data bus (FBO)
68
FOD3
69
FOD4
70 -
vss Ground for internal circuit
71
FODS
72
0
FOD6
Data bus (FBO)
73
FOD7
74
FOD8
75
- vee Power supply
76
FOD9
77
0
FODIO
Data bus (FBO)
78
FODll
79
FODI2
80
-
vss Ground for I/0 pin
81
FOD13
82
0
FOD14 Data bus (FBO)
83
FOOlS
84
NC
Not connected.
-
85
NC
86
FIDO
87
0 FlDl
Data bus (FBI)
88
F1D2
89
-
vss Ground for I/0 pin
90
FlD3
91
0
FID4
Data bus (FBI)
92
FIDS
93
FID6
94
-
vee
Power supply
95
FID7
96
0
FID8
Data bus (FBI)
97
FlD9
98
FIDlO
99
-
vss Ground for internal circuit
100 FIDll
101 FID12
102 0 FID13
Data bus (FB 1)
103 FlD14
104 FID15
-45-