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Tandy 1400LT - Page 178

Tandy 1400LT
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ROM
(1,
5.
8,
11.
14)
FIR
(I.
5.
8.
11.
14)
FIR
(1. 4, 5, 7.
8.
13.
14.
15,
16)
TFI
(1. 4. 5.
8.
13.
14, 15. 16)
TR
(1, 14. 15. 17) AI9
(1.
14. 15. 17, 18) AI8
(1.
11.
14, 15, 17) A17
(1,
11.
15. 17) A16
e
l5
17-
kg
1Al
lY1-18
1A2 1Y2.I6
1A3
1Y3-I4
1A4 1Y4.I2
I1.2Al 2Y19
2A2 2Y27
2A3 2Y3
2A4 2Y4
3
GND
10
IC12
(1.
4. 5,
11.
14, 17)
(1,
4. 5,
11.
14. 17)
(1.
4. 5,
11.
14, 17)
(1.
4, 5,
11,
14, 17)
(1. 4.
5.
8,
11.
14, 17)
(1.
4, 5, 7.
8.
11,
14, 16, 17)
(I.
4. 5, 7.
8.
11,
14,
16,
17)
(1.
4,
5,
7,
8.
11.
13. 14. 17)
A7
A6
A5
A4
A3
A2
AI
A0
.
,
11,
~
l7
I
,hn
1Al
1Y1
1A2 1Y2
l6
1A3
1Y3
i:
lA4 1Y4
2A1 2Y1
2A2 2Y2
I5~2A3 2Y3
2A4 2Y4
=IC13
GND
10
74HC125
9-
II
BA15
BA14
BA 13
BA12
BAll
BAIO
BA9
BA8
B7
BA6
BA5
BA4
BA3
BA2
BA
1
6AO
,,
BAO
BA
1
BA2
BA3
BA4
BA5
BA6
BA7
BA8
BA9
BA 10
BAIl
l1
l5
l7
BA 12
t
BA13
+5v
1Al
1Yl.18
1A2 1Y2
l6
1A3 IY3-:$
1A4 1Y4
2A1 2Yl:9
2A2 2Y2 -7
2A3 2Y3.5
2A4 2Y4
4-
0
BA .BUS
ME83128
(14)
ER7J
(1,
5,
8,
11,
14)
1
1c15
qftSV
dc18
0.
OIU
BDO
BD
1
BD2
BD3
BD4
BD5
BD6
BD7
(1,
4. 14, 16, 17)
BEN
*
NO.
3
7-3

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