Recent content by daskrabs

Have you tried looking for gates with excessive heat, either with a thermal camera or the "freeze it via upside-down air can" method?

@Pythagoras did it, ya'll. He successfully added Free Play, Hi Score saves, and region switching via eeprom to Puzzle Bobble for B System. I tested on real hardware, everything works great. :thumbsup: Nice work, sir.

Update: Conv3 roms with Free Play are working.

I'm going to test this tonight. Can you summarize the changes thus far so I can verify them? And to be clear, you want me to test "Conv3" and not "Conv4"?

Yes I can test next week. I'll let you know. Thanks again.

Thanks so much for all the hard work.

Not sure, maybe F2 test menu option? Happens when user selects "Yes" in either "Configuration" or "Sound Test." Does not happen when "No" is selected.

Thanks very much for that explanation. I know it'll be helpful to me and others going forward. Do you have any thoughts on the brightness "bug" previously mentioned that fixes itself in Test Menu and returns upon exit?

For those with B System boards, does your Pin 76 go to JP4? Mine appears to.

Yes, how you patched the roms. If it's too involved, don't worry about it. If you have a rom patch for free play selectable in the test menu, I'd be interested. Thanks for offering.

Sadly no. I pulled, reprogrammed, and socketed the EPROM with the MAME data. Success! You rule, @Hammy . Thanks so much guys. Everything works. The electronic volume control functions as expected. No "free play" though :( As previously documented on this site, B-System has a brightness issue...

Do you have a dump of the chip, or know the contents to flash? It's not in MAME as such. EDIT: Disregard, I see you need to run the game to get the nvram dump.

Getting closer. It boots to: BACKUP DATA FAILED PUSH TEST SWITCH white text with alternating grey and black screen. Pushing the test button on the PCB does nothing, nor does booting with it held.

Thanks very much. Does it matter which size EEPROMs I use? And should I go back to the Quiz PLDs instead of the SIDX?

Actually, 07 was different. I didn't check them all, but I assumed that could make a difference, so I dumped and reprogrammed 07, 09, and 10. The first issue is that my top3000 wouldn't read the older PAL16L8 chips for 05 and 06, so I replaced with GAL16V8's and burned the SIDX equivalents from...