Radio Shack TRS-80 - Page 40

R46
9l0
HI
—
ISHTI]
H242
Yl
|vZ"2
"74LS04
l0.6445MHz
lx
74LS04
»52
910
CLK
2
C43
TOGGLE
+
5V
>R63
44.7K
10
Il3
CLOCK
ISHT
I)'
A
!N
B
IN
A
€58
B
74LS92
C
RO(l)
R0(2)
CTR
1
ISHT
I)
£1
TWO
PRE CLR
1/2
Q
74LS74
CLK
Q)>
Z70
6
Z43
74LSI57
15
D0T2
2
DOT I
74LSI32
rT7"
74LS74 Z42
k°
_2
h
74LS04]
^
_
SPARE_ GATES
'724
"
74
LSI32|
_
'
SPARE GATE
1
29 74LS04'
if
1260
SPARE GATE_
'
~74LS367
I
^^>^-
i>^\
l
SPARE
GATES
I
SPARE GATES
A8
FROM
A9
SHEET'
WR*
1
RD*
[viD*
CLOCK/2
CHAIN
_Cl
A
|N
B
IN
Z65
B
74LS93
C
RO(I)
R0I2
f
[iiO
-
74LS0T|
.
I
SPARE GATE
CI
9
C2
M
C8
+
SV
250
B
74LS93
C
RCXll
ROU)
JR49
>4.7K
CI6
C32
B
(«6
I:
£_J[
l
IN
D
IN
212
B
74LS93
C
D
RO|l|
R012)
1/3
74LSII
9 L2
8 L4
RI2
^kT
II
iT3
,
14
o
7
232
B
74LS93
C
RO(l)
R0I2I
1/3
74LSII
Rl
R2
R8
1/3
74LSII
Rl
I
A2
A3
VRj»
10
13
Z64
74LSI57
10
n
249
74
LSI 57
I
HDRV
,
74LS02
LSI
A6
>:
s
v
10
231
74LSI57
w
V1D«
SHIFT
MODESEL
LATCH
74LS02
230
*60.
JLl
2P<3.
VO
V2
V3
.
5
v"6
18
v9
+ 5V
"L_^
A2
CR39
>4.7K
#°
AO
PRE CLR
27
Q
74
LS74
3
r^CLK
V
BIT
6
5
260
74LS367
II
AO
DI
A.
A2
A3
A4
A5
263
A6j
A^
AS
'2I02AN-4L
AC
CtCE
13
BIT 7
DO
1 C4Lb
260
13
V7z42
X74LS04
1
12
DI
262
2I02AN-4L
^;ce
DO
BIT 5
BLANK*
CLK
H27
74LSI75
CLR
8
Q
Q a Q
rr
VCLR*
l5
V^
DLY
L8
L2
^4
DLY
BIT 7
DLY BIT
7*
DLY
BLANK
12
Z60
A5
A4
D7
36
D5
D4
DI
261
2I02AN-4L
-CCE
DO
BIT4
244
BIT 3
D3
DI
_
245
_
2I02AN-4L
-CCE
DO
JI2
BIT
2
I
74LS367
2J^3_
244
D2
DI
246
2I02AN-4L
-CCE
DO
Dl
13
1
14
CLK
D D
D D
D D
228
74LSI74
r-^OCLR
Q Q Q Q
IC
BIT I
244
DI
247
2I02AN
4L
-CCE
DO
2
BITO
6|^W
"244
DI
248
-
2I02AN-4L
-CCE
DO
LBO
LSI
LB2
i_B3
LB4
LB5
A6
A5 A4 A3 A2
Al AO
RSI ~
729
CS
RS2
ttj
RS3
MCM6670P
DO
DI
D2D3D4
A7
A6
10
Z26
74LS20
226
74LS20
mr
12 13
C2
:4
10
5
04
16
l!2_
II
'0
2C2
IC2
2CI ICI
2C0
ICO
28 74 LSI
53
Y2 Yl
V
OS
12 |l4
ABC0EF6H
210
74LSI66 Q
SHIFT/
LOAD
CLKINH
CLK
CLR
Right
T
IF
GRAPHIC
IS
LEFT
>
—
—
10
B C D E F
G H
Zll
74LSI66
Q
CLR
A
SI
SHIFT/ LOAD
CLKINH CLK
V
SHIFT
_Z9
'74LS04
13 GRAPHIC
jl^y
74LS02
SEE
SHEET
DO-30-
DI-22
•
D2-32
•
33-26-
)4-l 8
•
)5-28-
36-24
37-20-
+
5V
O
SYNC
R29
I.8K
R23
'Q2
IPS3904
R28
< R30
270C >
47c
^
R2~>
Q
MPS3904
R22
lC7
+1
'1200
>330c >750
TO.OI»iF
c
1/2
75452
n
C2
ilO*iF
16V
V
R4
4.7K
26
25
,HDRV*r
rt*
HORV
T2
il/^R20
74C04
74C04
10OK
.257 ,757
R2I
VDEV*r\^4
IOOK
C20
330
P
F
—1(-
3]^
5
MODESEL
VDRV
&*
*
31
'74C04 74C04
HS
7 VC04
"74C04
r-?
6
C2I
750
P
F
„
LL^MNcA
74C04 ^4C04
|
CASSIN
R36
360K
C24
220pF
—Ih
—
N^A,
%
«*W
R37
560K
C02
COO
11
R67
100s:
C25
COI
220pF
R33
360K
C03
CR5
IN4I48
CR4
>^LM3900
IN4I48
COS
R42
I MEG
R4I
470K
Oil
LM3900
CIO
FROM
SHEET
A7-36
A6-38
A5-35
A4-4I
A3-34
A2-40
AI-27
AO-25
A5
R26
IMC
A4
SYNC
A7
A6
^57 257
!
N^
ii|\^io
4>
^4004
VS
4C04
^4C04
K
C26
0.047MF
C27
OJOZZiiF
25
74C00
74C00
lS
257
^57
5]^
—
^6
9|\^8l
*-74C0'4C04 ">4C04
R32
IC*
•—
+
5V
C5
^IO»iF
I6V
\7
CR6 CR7
IN4I48
IN4l48
C
|j
476k
C3C
R3
CI2
007
^252
74LS04
n
FROM
r
IN
»
sheet|
^
t
.
4V
254
)Q
6
FE
*
^
d
i*y
74LS32
*7rf
10
>
>2
>
74LSI32
INSIG<
OUTSIG<
74LS32
74LS30
74LS32
MODESEL
74LS367
CR8
MDA202
•
+ I2V
O.luF
:
50V
(4 PLACESI
C28.C30
C32.C34
-•—
(H>+5v
-II
—
»•-
aiMF
i
12V
14 PLACESI
CI6-CI9
V
O.ljiF
12V i
(32 PLACES)
C22,C23,C29,
C3I,C33,C35-C38,C7
C4Q,C4I,C44-C56
+ 5V
,R59
>4.7K
D2
0^
13
D
CLR
Q
QD
D
Q
259
Q
3§
S2L
74LSI75
3D
Q
D
CLK
5
R54
2
7.5K
SASSOUT
C20
W
CR9
>-klN982
CRIO,
FRONT
N982^
VIEW
10
C22
\
L
74LS32
L_
'_JPARE_GATES
I
Figure
17. TRS-80
Schematic (Sheet
2)
38