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All
and
more
about Sharp
PC-1500
at
http://www.PC-1500.info
•
TPB
Cl
RCUIT
Y,- -
----.
0-----~
TPB
M
£
,
Y,
0 PRO
~«;
CK
CL
V<x:
•
INT
CIRCUIT
A15
(1
/
A
13\G)
-l-~==::::_
__
__,J
G>b
A
12{1
)
r
--
--iG
1
A11
(1
1
) -
--
-+ - -
-- C
A 10(1
)
8
A9 (1)
-
-
-
-
+--
- - - l
AS
ME
l
(1
)
---~
X>--
TPB
The lefr.hand
circuir
is
10
produce one pulse at
ME,
(
Y
1
)
.
At
Y
1
and
<Pos.
however,
two
pulses
are
generated
up to
TPB.
There.
fore,
a
stage of
OFF
i.
s
added to
produce
signal
Q
.
Thus TPB consisls
of
Y
1
,
Q,
and ¢OS·
INTERRUl'T
PORT ADDRESS
(
DEOO)
ME,
I
DFFF
INTERRUPT
will
be
effective
Ollly
condilion of MEI
,
A9,
AlO,
All,
A12,
AB
Al4,
A15
,
(In
tcrrupl
will
proceed adress
of
between
D£00
to
DFFF)
•
LH5811
CHIP
SELE
CT
8
AD1S
(1/
-
--<
AD14 (1)
-
-
-I
~O
H
1
38P
10---<)!G>a
-
-4-!:::===:::::_-_J--<jG
>,•
A
0
·13(0)
A01
2
(1)
A0·11
(0)
-
-- - - -
--
f
--IC
AD
tO(O)
8
A09
(0)
A
'--- - - '
ME1
(1)
-
-
--
--
-
--'
Vss
Do not sale
this
PDF!!!
(Address
0000 o
r
DOOF
to be
used)
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