I dumped the Gakken Jungler ROM tonight (Mitsubishi M58846-702P) and was looking at dumping the CPU that's in Amidar, but the problem is it's an M58103-702SP.

This is a 52 pin shrink dip chip which is very odd. It should theoretically be similar to the '46 but I cannot find a data sheet with the pinout of it. Does anyone have that or know where to get it?