Epson PX-8 - Page 304

REV.-A
Pin No. Signal Name
In/Out
Function
40
N/C
-
Not used.
41 DAO
In/Out
Slave CPU address data bus 0
42 DA4
In/Out
Slave CPU address data bus 4
43 DA5
In/Out
Slave CPU address data bus 5
44
DA6
In/Out
Slave CPU address data bus 6
45 DA 1
In/Out
Slave CPU address data bus 1
46 DA 7
In/Out Slave CPU address data bus 7
47 DA3
In/Out
Slave CPU address data bus 3
48 DA2
In/Out
Slave CPU address data bus 2
49 E
In
Enable signal from slave CPU 6303
50
N/C
-
Not used.
51 SWPR
Out
PROM power switch
52
TEST
-
Test terminal. Normally kept low.
-
53
R/W
In Read/write signal from slave CPU 6303
--
54 SINT In
Interrupt signal
from SED 1320
55 AS Out
Address strobe signal
from slave CPU 6303
56 PRD Out
AND
output from RDMC input and SMMC.
Outputs RDMC input
to terminal when
SWMC is high.
57
N/C
-
Not used.
58
RS In Reset signal
--
59
IROO Out Interrupt request signal to slave CPU
60
VC - Circuit voltage (+5V)
7-33