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DATA
BUFFER
I-DIR-
(B
ECTIONAL)
I
U1
DIR
—._¢.
"EN
"EN
20535.5?
U3, U5
v
g
E
ADDRESS
DECODER
U7
C—STO
"
—'>
ADDRESS
DECODER
u31
a
EMULATOR
"—'
_
POWER
SOURCE/
'
4
A.
4
LATCHES
OE
—
UUT°—"
A
'
D—AT'AWI
.
LATCHES
A'DDHIEN/
U4, U6
ADDLOEN'
'
——
OE
__
BLATCHEN
CONTEN'
STATUS SIGNALS
II
ROM
'
LATCHES
__
032
TO
""05
CONTROL SIGNALS
A
LATCHES
OE
Flgure
4-2.
+4.3v
—>
_,
T0
SINK
CIRCUITS A1,A4,
u10
+0.7v
'1
+4.3v—b
BDO—BD7
'5
*SYNC
_,
+0.7v
LE
LDO»LD7
4
{7
U2
HOLD
CIIRCCVJIT
N
"'2
BA15
;
BAO
_
SYNC
$
+0.7v_
LE
4 LAO-LA7
'
+4.3v
A
'
'SYNC
+0.7V
LE
V
U8
+4.3v
'}
'SYNC
+0.7v
'
U9
Detailed Block Diagram
A
CLOCK
PROTECTION
A5
DATf
49,9
_
T
.
A1
NW
+43
_
I
ADDRESS
-
v92
1
j
_
.
A2, A3
STATUS
-
'
{ALE/9
i
A
.
'
.
A4
A"
CONTROL
'
*3/91?
.
A5
A
ZSOQT
J
V
;
'5
2
' O
\
E
E
'
+5VJ
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