Epson PX-8 Technical Manual page 325

REV.-A
Pin No. Signal Name In/Out Function
29 PO 3 In/Out Port data (data bus of main CPU) 3
30 P04 In/Out Port data (data bus of main CPU) 4
31 PO 5
In/Out
Port data (data bus of main CPU) 5
32 PO 6 In/Out Port data (data bus of main CPU) 6
33 PO 7
In/Out
Port data (data bus of main CPU) 7
34 LOO In/Out Local data (for V-RAM) 0
35 LO 1
In/Out
Local data (for V-RAM) 1
36 LO 2 In/Out Local data (for V-RAM) 2
37 LO 3 In/Out Local data (for V-RAM) 3
38 L04 In/Out Local data (for V-RAM) 4
39 LO 5 In/Out Local data (for V-RAM) 5
40 LO 6 In/Out Local data (for V-RAM) 6
41 LO 7
In/Out
Local data (for V-RAM) 7
42 LAO Out Local address (for V-RAM) 0
43 LA 1 Out Local address (for V-RAM) 1
44 LA2 Out Local address (for V-RAM) 2
45 LA3 Out Local address (for V-RAM) 3
46 LA4 Out Local address (for V-RAM) 4
47
LA5 Out Local address (for V-RAM) 5
48 LA6 Out Local address (for V-RAM) 6
49
LA 7 Out Local address (for V-RAM) 7
50 LA8
Out
Local address (for V-RAM) 8
51 LA9 Out Local address (for V-RAM) 9
52 LA 10 Out Local address (for V-RAM) 10
53 LCSE 1 Out Local chip select 1 (V-RAM 11 C)
54 LCSE 2
Out
Local chip select 2 (V-RAM 10C)
55 LCSE 3 Out Local chip select 3 (V-RAM 9C)
56
N/C
-
Not used.
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