Originally Posted by seanriddle
TMS1470 would be 28 pins; that's what was in the Astro.

Any scans of the back of the PCB? Seeing what connects where might help.

Rik replied over here: http://www.handheldmuseum.com/forum/viewtopic.php?t=2146&start=45
It seems like he's having trouble registering on bannister forum. He also says that Entex Hip Pocket Baseball is not an MCU.