09284: Some games in xavix.cpp: Several xavix games doesn't boot throwing Eeprom/Memory errors

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09284	Core	Major	Always	Oct 9, 2025, 16:10	Oct 14, 2025, 19:07

Tester	danylopez123	View Status	Public	Platform	MAME (Official Binary)
Assigned To	Haze	Resolution	Fixed	OS	Windows (x64)
Status [?]	Resolved			Driver	tvgames/xavix.cpp
Version	0.281	Fixed in Version	0.282	Build	x64
		Fixed in Git Commit	533dd9f	Github Pull Request #	#14290

Summary	09284: Some games in xavix.cpp: Several xavix games doesn't boot throwing Eeprom/Memory errors
Description	See also JimCarlTay's notes, not only this got affected to the xavix hardware but also it's other ones too. I'm not sure when this problem started to happen but when I've wanted to play some xavix games again, I've started to notice that several games running with that hardware had problems booting up, showing either Eep-rom or Memory errors. Some xavix games were still fine to boot, i couldn't test all of them because i don't have every xavix rom The following games are the ones I've tested and fails to boot: - Champiyon Pinball [tomcpin] - Jumping Popira [jpopira] (Also the carts jp01 & jp02 were affected too but the rest of the carts boots just fine) - Let's! TV Play Chou Ninki Spot! Korogashi-Houdai Tamagotchi Resort [ltv_tam] - Let's! TV Play Classic - Namco Nostalgia 1 & 2 [namcons1 & namcons2] - Let's! TV Play Classic - Taito Nostalgia 1 & 2 [taitons1 & taitons2] There might be more affected xavix games, if you found more, you can comment them.
Steps To Reproduce	Just try launching one of the games mentioned in the description and they will prevent from booting up because of a Eeprom/Memory error
Additional Information
Github Commit

Flags
Regression Version	0.281
Affected Sets / Systems	Some games in xavix.cpp

Attached Files	0000-0001.png (11,050 bytes) Oct 9, 2025, 16:10 Uploaded by danylopez123 2 examples giving different errors

No.23740 JimCarlTay Tester Oct 9, 2025, 19:05	Other affected games/systems (test case: make sure they reach the title screen and/or main menu; parent sets only): Marked working: - Nihon Isshuu: Boku wa Plarail Untenshi (Japan) (tomplc) - Poko Poko Hammers (Japan) (tak_hamr) - Tokyo Friend Park II (Japan) (epo_tfp2) Marked not working: - Croket! Itada Kinka! Banker Battle!! (Japan) (epo_crok) - Dai Mono Tsurouze! Excite Fishing DX (Japan) (epo_efdx) - TV Mail PC mail*cot (Japan) (epo_mail) - Zuba Zuba Blade (Japan) (tak_zuba)
No.23741 JimCarlTay Tester Oct 9, 2025, 19:54 edited on: Oct 10, 2025, 23:19	Other affected games/systems in other XaviX drivers: xavix2.cpp (all marked not working): - Let's! TV Play Kage Hatsudou Taikan Blue Dragon: Kiwamero! Fire Crisis (ban_bldj) (shows EEPROM error notice, then proceeds with bootup as usual until it freezes at the title screen) - Let's! TV Play Naruto Ninja Taikan: Dattebayo! (Japan) (ban_naru) xavix_2000.cpp: Marked working: - IDATEN Jump: Gekisou IDATEN Battle (Japan) (tom_jump) - MX Dirt Rebel (ttv_mx) Marked not working: - Choro-Q Byun Byun Racer (Japan) (tak_chq) - Duel Masters: Duel Station (Japan) (duelmast) - Excite Bowling (Japan) (epo_bowl) - Let's! TV Play Taikan Kakutou One Piece Punch Battle: Kaizoku Ou ni Kimi ga Naru (Japan) (ban_onep) - Let's! TV Play Touin Ougi Onmyou Taisenki: Mezase Saikyou Toushinki (Japan) (ban_omt) - mini-moni Party! Rhythm de Pyon! (Japan) (epo_mini) xavix_2002.cpp: Marked not working: - Dontore da bei 2 - Ouchi de, Minna de Fitness! (Japan) (ndpmj) - Jackie Chan J-Mat Fitness (XaviXPORT) (xavjmat) (Init error) - XaviX Aero Check & Balance (XaviXPORT, Japan) (xavcheck) (EEPROM init error) - XaviX Music & Circuit (XaviXPORT) (xavmusic) (EEPROM init error) This could be a likely regression as some of these systems used to boot without issue in previous MAME versions, likely 0.280 or earlier.
No.23742 Kale Developer Oct 10, 2025, 08:02 edited on: Oct 10, 2025, 08:04	This should be already fixed as per https://github.com/mamedev/mame/pull/14290 It was a side effect of this issue fixed https://github.com/mamedev/mame/issues/13998 Discussion at https://github.com/mamedev/mame/commit/60e46e250b631a49c9ea0a1a70a1db4eeeb5df50
No.23743 Robbbert Moderator Oct 10, 2025, 10:15	It hasn't been applied yet, and it can't while it's in draft mode. So, we wait for a while.
No.23745 danylopez123 Tester Oct 10, 2025, 13:28	@JimCarlTay Huh.. so not only the normal xavix hardware but also the others, thanks for the notes! @Kale Well, at least it's manageable @Robbbert That's fine, I can wait.
No.23746 Haze Senior Tester Oct 10, 2025, 18:43	- Dontore da bei 2 - Ouchi de, Minna de Fitness! (Japan) (ndpmj) this never booted, not sure the SEEPROM is hooked up in the correct place.
No.23747 JimCarlTay Tester Oct 10, 2025, 23:21	Pull request merged, issue fixed in commit 533dd9f.
No.23748 danylopez123 Tester Oct 11, 2025, 01:23	Still gives jpopira the eeprom error if you launch it with either the jp01 or jp02 carts At least it's fine with no cart and the rest of them
No.23750 Robbbert Moderator Oct 12, 2025, 00:44	Tested all the games reported here. All are fixed except for ndpmj and the mentioned jpopira carts.
No.23754 JimCarlTay Tester Oct 12, 2025, 06:53	It's likely that ndpmj had that issue way before the regression happened.
No.23761 Haze Senior Tester Oct 14, 2025, 19:07	I think Jumping Popira carts were an older regression, it wasn't even set up properly to access the SEEPROM at all. Those carts are kinda weird, they're the only e-kara form factor carts that only work on a single device (Jumping Popira) so I think I missed them during a previous refactor. I've made a fix for them too.