Mapped internal ROM pins.
Disclaimer: I am not responsible for errors! Whatever you do, it is
at your own risk. (I don't think there are errors. Tell me if I am
wrong. I have used this pinout for the robot and it seems to work
fine.)
+----\/----+
NC- -NC-------------- These pins don't seem to be connected
a19- -a20 to the TI92 board.
a18- -a9
a8- -a10
a7- -a11 * These pins were wired to Vcc ROM
a6- -a12 and GND. They may not be the chip's
a5- -a13 Vcc and GND pins.
a4- -a14
a3- -a15
a2- -a16
a1- -a17
CE- -*Vcc
*GND- -*GND
*GND- -d15
d0- -d7
d8- -d14
d1- -d6
d9- -d13
d2- -d5
d10- -d12
d3- -d4
d11- -*Vcc
+----------+
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