The Newzealand Story M-CHIP replacement?

[Tailsnic Retroworks]

Hi. Soon I'm going to have my own TZNS single board game, and I have the doubt if the infamous M-CHIP (B53-09) can be replaced/avoided in the original board if it breaks.

In MAME says it's a i8042/i8742 with internal rom, but I don't know anything more about it.

 

[Tonitoxarcade]

Yes, it can be replaced and it is dumped so it can be reprogrammed. I repaired a PCB that didn't have this chip and it worked perfectly. Regards.