Epson PX-8 Technical Manual page 296

REV.-A
GAH40M
1 . Location: MAPLE Board, 4C
2. Pin assignments
Note: Pins 25 and 59 are cut.
Table 7-9 GAH40M Pin Assignments
Pin No. Signal Name
In/Out Function
1 DB6
In/Out
Data bus 6
2 DB1
In/Out Data bus 1
-
3 IR Out Indicates that data is being output according
to main CPU instruction (RS-232C
~
main
CPU).
4 DBO
In/Out Data bus 0
5 DB2 In/Out Data bus 2
- -
6 CSOE Out SED1320 chip select signal
-
7
RS In Reset input: Supplied from GAH40D.
-
8 IW
Out Indicates that data is being input according
to main CPU instruction (main CPU ~
RS-232C).
9
N/C
-
Not used.
10
TXC Out Baud rate control clock (for RS-232C).
7-25