Garegga zakk rom hack - possible for Batrider?

[emphatic]

Since I got my Batrider PCB (Japan B version), I've been wondering if it would be possible to patch the roms to have all the code-unlock stuff visible for each new credit. I have no idea on how to do this myself, or I would post patches right now.

[cools]

what stuff? Its all on DIPs IIRC

[emphatic]

http://www.world-of-arcades.net/R8zing/ ... rets_2.htm

[alamone]

I don't have a PCB to test but it works in MAME

http://alamone.net/temp/batrider-japanb-unlock.zip

Enable Guest Characters, Enable Player Select, Enable Special Course
For Japanese B rom set
Please let me know if it works!

[emphatic]

I don't have a PCB to test but it works in MAME

http://alamone.net/temp/batrider-japanb-unlock.zip

Enable Guest Characters, Enable Player Select, Enable Special Course
For Japanese B rom set
Please let me know if it works!

Awesome. I don't have an EPROM burner myself, but I'll get someone to burn it for me.

[cools]

Ahh, my mistake. They're all on DIP switches in the export versions.

[alamone]

Also made one for Version A

http://alamone.net/temp/batrider-japana-unlock.zip

[alamone]

The IPSes didn't work on a PCB. I updated the checksum skip hack to something else, hopefully this works.

Ver B: http://alamone.net/temp/batrider-japanb-unlock-v3.zip
Edit: V3.

I wish I had a PCB to test myself...

[emphatic]

The IPSes didn't work on a PCB. I updated the checksum skip hack to something else, hopefully this works.

Ver B: http://alamone.net/temp/batrider-japanb-unlock-v3.zip
Edit: V3.

I wish I had a PCB to test myself...

I still haven't had any luck contacting my EPROM burner guy. I'll get these prepared for when he shows up though. Thank you.

[alamone]

No idea if this is going to work. Works fine in MAME,
but doesn't even proceed to the checksum portion when keigo tried it on his Batrider board.

If someone out there is knowledgeable about 68K asm maybe they can look over my modifications
and see if I'm missing something.

[alamone]

Apparently, if you're able to skip the checksum test, the patch works,
but right now it crashes when you try to run it on a real PCB.

But anyway, the DIPs should work even on the Japanese version.
Try the 3 DIPs marked as unused in the last bank.

[emphatic]

But anyway, the DIPs should work even on the Japanese version.
Try the 3 DIPs marked as unused in the last bank.

Thanks, I'll give it a try.