Batman Forever R-Zone game

Batman Forever used a modified Sharp SM-512 MCU that doesn't need a crystal (die ID KMN1202)

die shots (bottom left is pin 1, numbered CCW)

ROM array

ROM array with top metal removed

raw ROM dump

ROM dump

melody raw ROM dump

melody ROM dump


K1 is DAT
S1 is /LOAD
S2 is CLK
S3 goes to a 10K resistor that's connected to the anode of a diode.  R goes to another 10K resistor that's connected to the anode of another diode.  The 2 diodes' cathodes are connected together and to audio out.
S4 is backlight LED

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