Epson PX-8 Technical Manual page 334

REV.-A
Pin No. Signal Name
In/Out
Function
14 D4 In/Out
Data 4
15 D5
In/Out
Data 5
16 D6 In/Out Data 6
17 D7 In/Out Data 7
18 CE 1 In Chip enable 1
19 AB10 In Address 10
20 CE 2 In Chip enable 2
21 WE In Low level: Write
High level: Read
22 AB9
In Address 9
23 AB8 In Address 8
24 Vcc
-
Circuit voltage (+5V)
7-63