A
I
B
I
I
o
I
1
F
I I
H
I I
-
12,13,14,15
WR
US1S
I
"--
__
U_S_l_S
~
""""1
7
4LS1.B_1
__
+-_._W_R_1T_E
___
U918
74LS19
'3
~~
~
1 a
7~14
'2.'21<
1~~8
RDIN
10
74LS19
U91S
~
B "OSt
i 8 I
)------+----
......
~-----+---I
74ALS04
4
USS
r
Ut01S
8
74LS19
'----------+-1-0
.....
1
...
9
--tt--_·
O
_
S
_'2
.....
U.91S
1'3
74LS19
1'2
....
1_1
--I-_
..
_M_O_T_EN_l
__
....
U918
..
..
74LS19
~
17
~
8
·MOTEN'2
5 I )....
--------+------
....
OR1VEBUS
'--------+----1
)
?
PU
ANI
300
7
UB10
DMAEN
-
U49
74ALS17
..
FOO
3 -
'2
OS
~74ALSOO
...-------------1
to
1Q
t---~
..
F-RS---T---'
to
B
....-
__
FO_'2
---e..
'20
2Q
~5------"""'---I
F01
8 7
DMAEN
...--
.....
FO
....
4------
U
-l'3Q
3Q
~1-0--MT-l-.....
U710
FD.5
11
40
4Q
...
1;..;.'2--MT-'2---+--------+---------+--------4
-----------14
00000I50
5Q
IS
-
lID
80
~
~f---+_--------'_I
CK
....-_..-
1
....
CL
JP'2
~
R40
lK
"FOAC
FTC
"CNTRLSTB
"OUTSTB
-JNSTB
-FCS
U.99
DQ
1'2
Jl
IS
PAL11L9A
FQ
t9
F l
17
F'l
18
F1
IS
F 4 14
F
~
11
U
J8
r---~
J'
QJUMP1ER~
EC
N. C.
SA'2
SAt
SAO
JUMPER'2
A41
)
Et Q l
~
lK
I
E'2
N.
C.
PU1B
EO
PU1A
~
2
JQ
3-
Jl
..
J'l
5
J1
8
J4
7
J5
r-t-----01
J'
8
J7
8
I
t
-JOW
r "'JOR
·RESET
T C
PON
SABUS
SA
10:.9J
74LSl
'25 74LS14
....-_F_07
__
1_t--<
t-----t_'2
--C-HA-N-6-E---------~~-------=:_:":'~~---I_('2
X/1.
.......
1_1
.......
__
·_0_1SK_C_H_6_--4I
PU
7 4LS19
f~""'<J
1
11
Ul0S
1 3 U91S L 1
~8.A.
8
'2.'21<
HPMOT
EN
2 I I "
"Y'
"Y'
·MOT
EN1
74ALS17
..
~~~~~~~
1
..._-FO-0-----...;~~~~'25~-LL-0001--+-----t
-of
H'
FQ
...1
t
-
7
9---0-0-
......
FS16BUS
~~~
;
'20
20 7 2 J 1
Fit
8 0
1
----------1-1
....
'a[) 30
to
SAS
3
J'l
F'lt-t
....
s---
O
-'2-----------------------lII
t1
40
40
~
~:
~
: J1 F
1
t 4
:~
tT
50
50
is
SA8 8 J 4 F4
....
t-1---R-E-0-W-R---------------------
JPl
- 80 80
--
SA.5
7 J 5 F
51--------------,~1
74LS19
,....-----f.-----+--------
8
_1CK
SA':ll
I
J6
1'" 11
·REOWRCUR
11-
__
-_
P
_
O
_
l
_
R
----it--
__
-+
__
-,
r------t
...
CL
oJ
J7
.FDBO
PU
(;
....
--------+------
....
I
~.
Ja
JQt-
t
_'2
__
-<..
USts
USB
SABUS
8 J J
.11
1~Z
r
-------
-:10
7
..
ALS09
~
t 7
4ALSOO
~
'>-_JP_l_t_'2.....
11
BO
EN
2 3
"'--
........
1_1~1
JP'2
U8S
U710
CTRLBUS
r
·JOW.
-lOA
11
11
11
11
11
11
11
PU18
ADOR
ESS
RAN
SE S
EL
E
CT
JUMP
ER
E1
TO
E'2-1FX.
E'2
TO
Et-17X
PU1A
FL
OPPY
ENABL
E
JUMP
ER
EE
TO
EC-ENABLE
EC
TO
m.01SABLE
-
-
(
r
-
·tIlLOAO
7/8/85
REV
A
PU
16
OF
25
I
I
19'27'2A
RNa
)
2.
'2t<
7
FO
10:
7)
FDBUS
Ut9
74ALS'24.5
8t
19
FOO
8'2
17
FOt
81
18
FO'2
84
1.5
F01
B.5
14 F04
88
11
FD.5
87
1'2
F08
89 ...
1_1_FO_7--4
"FEN
..._S-O-O
2--1
A1
....-SD_l
3
-tA'2
~S~O
....
'2
"-tA'3
..._S-0-1--_
5
-tA4
.-S_0_4
8
-tAS
~S_D.5
7-tA
8
___
SD-8--_8-tA
7
..._SD-'----8-tA
9
1
IS
OIA
~6
Ul01S
1'3
74LS19
B'27'2A
...--+------...--1-'2-'1
D_i_l
.......
_
..
_S_T_EP
.....
"--_FRS_T
~.01
1
;;~;;-iD~~;;~'
...
~
...
9---~
....
~R
....
EJ<--+---'
Ul
0
IS
1
AN
S
.......
--~t__-----~(U:RoO
lCT/oOJR 37
STEP
74LS14 1
~31
..
IJR
FR/STPt-
3
-
a
--II)-L-----'
..
F~1.1--3----2-.-'2-K-
.......
--+---W-A-T-PR-OT----4
"----+-----t-------rO(~1
CS
HoOl
l5
I
RN8
~~---+-----+-------4A(I
RoOf
t-------~~
U91.5
1
.--.....fO~0-----8
......
JlJQ
IJP/TS
34
liP
74ALS09 2 74LS14 t
-../"./"'v
4
1
FOt 7
Fl
T
fa
TRACKO
3 2
'1U
-TI"IUO
...--ro-'2-----.~lll
/TR~~
U~Y
.......
1
__
TAf(_0
1~OF~l--l-t----.-~-~-~--~---~
F01
• .DJ'l p,sg
31
LATE
U8S.
0
74LS19
...----FO-4-----10-
ofJJ1
PS J 30
IIFIlATA
~--------a--"""lll
B U91S "HS1
F~
11"4
IJR
~TA
~
~---------------~-----~
.--.....FO~8------
....
1'2
...
tJJ
5 JSQ
2i
I U918
.--~-----t.DJ,
J,sl-
___
-FO-7-----11-
..
.DJ7
HJlS
El
....
2_7
__
1I)
----l
.......
-+....J
PaN
..
74LS19
ORO
14 28
r__--------\
8
·WATEN
"---+-+----t-
.......
---+--------IS
....
t.DRQ
"FP1
25
liE
5
.------------------t------.....
I a
.DA
tK UEt-2-4--r-CO-EN-----1
.......
--+....J
U
10
IS
1
AN
8
L..-
__
-+- -+--+-
;...
...
Tt V
to
-----...
t
.A..A.
05
,....-_J_ND_EX
__
I~'.t
J.D~
R.D
JA
TA
21
__
D_EL_RD_____
74LSt4"
...,
...,
1
"---+-
__
+-
.;;.INT-.;,.R
-+_t__-----------t
.......
-+-----
1
...
9
-
t
JNT JIJ
2'2
__
"
....
1N:lO_W_--4
...-
8-(X::'"1.1--
5
2
_.
'2_K
__
........
+-_
...
_I_ND_EX
__
--llI
...-
__
1_'
...
tlK
IJR
tLK
~_1
__
"_R_CL_t<
__
...
f~
"
I
uiB----------
74LS18
U81S
Felt<
..
a
5
SOBUS
SO
10:
7J
XSJ
6"240
74LS1'2S
DR
0'2
8
05
1----------------------+-,
..
Ul0.9
74LSt'2S
~1_A_Q_8
-B-cr::P-~
to
UtOS
DMAEN
8~
U&9
11
11
11
-
-
ues
74ALS09
B
-FDBO 8
·FDAC 10 I
I
U918
FS1SBUS
PROCESSOR
BOARD
45935-60001
FLOPPY-DIGITAL
I
A
B
I
I
o
I
I
F
I
I
H
I
I