Olivier Galibert made some improvements to the colour decoding in XaviX. This improves the blues and stops everything having such a washed out look.

Several key features now closely match real hardware videos, including the more visible blues on the XaviX logo and in the background of Gaplus Phalanx

While I do still have plenty to write about regarding JAKKS material that was purchased during my previous donation drive (much of it is supported in MAME 0.207) I haven’t found time between actually emulating stuff to do a comprehensive writeup for all of it yet (and for many of the items we still have to hope that Sean can find a way to dump them, but that’s the research side of things) Meanwhile another box of things that Peter Wilhelmsen purchased and ShouTime helped get shipped out of Japan arrived with Sean for dumping, one of those games being Geigeki Go Go Shooting. Sean dumped it (it was one of the easier cases) and it runs pretty much correctly without any modifications to the existing emulation.

There’s a warm feeling being able to emulate this kind of platform exclusive as the game wasn’t ported anywhere, so outside of the real hardware, emulation in MAME is the only way you can experience it. This will be supported in MAME 0.208.

This one could actually be interesting for other reasons too. According to the ‘Game Developer Research Institute’ hosted on smspower this game was programmed by Fupac, a company headed by a former employee of Compile, so could easily be in some ways influenced by earlier Compile material.

The game plays very well, and offers a range of difficulty options (including a ‘Super Hard’ mode where the bullets are very fast) The hitbox is of reasonable size for your ship (not too big, not too small) and everything is very responsive. It feels like a game developed by somebody with a liking for shmups. It even gets things like resetting your score on continue correct. Here are some screenshots.

Opening screens, menus etc.

Stage 1





Stage 2




Stage 3




Stage 4




Stage 5

The screenshots are all stills from an emulation video I made, that can be seen here. The sound emulation isn’t perfect, but it holds up fairly well.

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The game supports 1 or 2 players, each player having a dedicated Joystick, they looked like this.

One of my favorite things about digging into the XaviX emulation was discovering the e-kara and related systems. While we don’t yet emulate the microphone on e-kara (something MAME will have to consider in the future) the majority of the library still lets you give the songs a listen. In doing so you can hear a lot of the flaws in our XaviX sound emulation, so the e-kara collection acts as a good marker for future audio improvements, but at the same time the renditions included have a lot of charm, and while I don’t really know much of the original Japanese music many are pleasant to listen to.

Then were other things, games like Popira which used a subset of the e-kara library to present an actual game. I’ve never been good at rhythm games, but again, on the lower difficulty levels these things can actually be relaxing, a nice bit of stress relief, so documenting them and emulating them has been an interesting adventure.

While the original Popira had been dumped, the sequel, Popira 2 had not. One of the units we picked up in a recent haul from Japan was a Popira 2. I put some of my own money towards this batch, with Peter covering the majority of the costs, and ShouTime handling the logistics of getting it all shipped out of Japan for us. It was an expensive haul, but got us a lot of items, that hopefully you’ll see some coverage of on here. Sean Riddle is, as always, taking care of the hardware side, dumping etc.

Anyway Popira 2 was released 2 years after the original Popira. The unit has the same basic design as Popira, but instead of a single Yellow unit it consists of 2 units, a Blue ‘1P’ main unit, and a Green ‘2P’ secondary controller. This lends to one of the main features of Popira 2, which is 2 player support.

Emulation, well, it runs, and didn’t take much to get to a title screen.

After which it offers 4 modes of gameplay (or 3 if you don’t have the 2nd controller attached)

The first mode is some kind of practice mode, it’s a little pointless. You get to play with either a single on-screen pad, 2 onscreen pads, or the usual 4 onscreen pads with a very slow-paced game where only one ball will ever drop at a time. You don’t even get to pick the song in this mode. That’s fine tho, if you’ve never played Popira before it’s a decent introduction but I prefer to be thrown in a bit deeper.




The second mode is your regular Popira style game, plays just like the original.

The third mode is a variation on the original Popira, but it adds bombs, which you must avoid hitting; the same concept as the ‘red balls’ in Opus, as well as green icons which will grant you an extra life.

The forth mode is the main reason to have a Popira 2 over an original, and that is the 2 player versus and co-operative modes. Unfortunately it’s also where the emulation falls apart at the moment because the 2nd player has a very noticeable input latency for some reason, I suspect because the 2nd player inputs are being read through the ADC with timers, but changing my timer speeds doesn’t seem to change the latency; this needs investigation before the game actually gets marked as working.

Let’s have a look at some of the other music cartridges for now.

One slightly odd thing to see with the e-kara stuff is the degree to which the non-Japanese market was ripped off. All the US and European carts contain at most 10 songs, with the sampler carts having five. Many of the Japanese carts have more, up to 50 in some cases. This could be a licensing thing, but then we have the case of The Beatles cartridges. In the US, and Europe (the European ones haven’t been dumeped, but contain the same songs) there were 2 cartridges for songs by The Beatles, each containing 10 songs. These are ‘us_vol4’ and ‘us_vol5’ in the Software List for reference. That’s a total of 20 songs across 2 cartridges.

Japan on the other hand got a single ‘The Beatles’ cartridge as part of the main e-kara series over there, it’s cartridge ’50’ so ‘ec0050’ in the Software Lists, and it contains a total of 40 songs, twice as many as were available outside of Japan, on a single cartridge, and, best I can tell with full English lyrics, no translations.

Japan did NOT get the songs ‘Drive My Car’ or ‘We Can Work It Out’ so you’ll need the US cart for those, but otherwise Japan got 22 more English language songs from a popular British artist that the rest of the world did not get, and all of them were on a single cartridge.

We also got the missing ‘P-2’ cartridge that works with the DDR Family Mat (and dumped another P-4 to confirm that the weird palette behavior when using that with Family Mat was nothing to do with the dump)

The P-2 cartridge turned out to be interesting for different reasons however. When we’re buying these batches of cartridges we often end up with duplicates, that was the case for P-2, where at the time we bought 2 different batches of cartridges, both with P-2 (and had we located the 2nd batch first, we might not have even bothered with the first batch) In the vast majority of cases the duplicate cartridges have been 100% matches, aside one case where it showed that our original dump suffered from bitrot. P-2 was different however, despite the cartridges and case being marked in exactly the same way, the ROM inside was genuinely different. Why? Well it actually confirms an earlier theory I had with the US / European starter cartridges; post 9-11 censorship. The song ‘Run Run Run’ contains a picture of the Twin Towers in one revision of the cartridge, which has been replaced entirely in the other. There is no indication of this on the packaging as mentioned, so it was likely a silent change on the part of Takara for carts issued after 9/11.

Some of the A-series Pichi Pichi Pitch cartridges were dumped too, as was the e-pitch base unit for them. The base unit ROM turned out to be the same as a regular Japanese e-kara ROM, which is curious. The actual e-pitch base unit has less buttons than a regular e-kara, so presumably some features are unavailable. However, what I have noticed, which I need to dig into more, is that when running these ‘A’ series games, the control mapping ends up different even for existing buttons (but when running A-5 which is a plain karaoke cart in the series, they act the same as expected) I need to see if that’s an emulation bug or not. Also A-1 hangs after the first few dialog pages (assuming that’s an emulation problem not a bad dump) and A-4 gets stuck on the XaviX logo. I have a feeling these might be SEEPROM related, with the games reading back bad data, as plenty of other things struggle with the SEEPROM hookup I have.

Cartridge A-1 before it hangs

Cartridge A-5 which is just a regular Karaoke style thing



Cartridge A-7 which seems to run better than the other story based ones, and you can even get to the breakout minigame in it.

Some of the new G-series dumps provided a surprise too. For the most part these are regular cartridges with no custom presentation etc. They’re designed to work with e-kara and the Popira units, provided extra songs for both games. Later ones also recognize Popira 2 and allow 2 player support (earlier ones will run as Popira on a Popira 2)

The cartridges G-8 and G-14 are both ‘Mini Moni’ themed ones, and I was simply expecting a bunch of songs related to that theme, as with the others. However, instead what we get is entirely custom presentation when used with either e-kara or Popira, complete with minigames etc. There are no other cartridges to my knowledge that provide custom presentation even with Popira.

Obviously when used with e-kara the games aren’t very playable as they require a microphone input, which isn’t mapped, to trigger events. Here are some shots from G-8 with e-kara.

However with Popira you get games that use the buttons, so you can actually play them, for example in the G-8 cartridge there is a flag raising game. There are probably others too, because in G-14 once you complete the first game you progress onto another. Here are some shots from G-8 with Popira.

G-14 does give you more games from the off, including a slot machine type thing where you must match symbols, a Whac-a-Mole style game, and a Simon style game.






I was very surprised to see this customized theme.

There’s more to write about regarding all this e-kara stuff, but for now that will do. Thanks to Peter for helping fund these, ShouTime for helping with the logistics, and also thanks to the people who donated towards the other stuff I’ve been buying, as it meant Peter was able to allocate his own funds to getting some of this stuff out of Japan rather than having to buy the JAKKS stuff himself. Finally of course, thanks to Sean for having the patience to go through these and dump them.

One of the 3 GameKeys that was released for JAKKS Pacific ‘NK’ based systems was one containing Nicktoons Volleyball and Birdie Putt. We picked this one up along with the Nicktoons base unit, again thanks to those who donated money to make this possible.

The GameKey boots with your typical logos to the title page, where you can select either game.

I’ll start by looking at the Birdie Putt golf game, which offers a selection of options, including a ‘Hard’ difficulty mode (which presumably sets the par on each hole lower) There are 3 themes to choose from, each offering 6 holes, and a variety of Nicktoons characters each player can choose from. Up to 4 players are supported.



The Spongebob themed world contains objects you’d expect to find in the Spongebob universe.




Fairly Odd Parents! likewise contains things associated with that cartoon. There are mini Windmills on this set of courses where your timing must be correct in addition to your aim.



Danny Phantom is as you’d expect themed around that one, including warp portals etc.



So you get 18 total holes of Mini Golf, every hole is different and mastering each one could take some time. There’s no AI so this is strictly to play against your friends, or yourself for the best score.

It’s a solid, if unspectacular Mini-golf game that I could see being fun with a few friends; it’s not going to occupy too much of your time, and as an adult you could probably turn it into some kind of drinking game if you were so inclined.

The other game is Volleyball. It offers a similar selection of options to Birdie Putt, although instead of a selection of themes you just get the choice of an exhibition match or tournament.

I also seem to be terrible at this game, haven’t quite figured out the timing / positioning of the characters, so I don’t really have much to show from it.



The biggest drawback I can see to this is that it’s single player only, as the Nicktoons controllers don’t provide any kind of link ability. I’ve never really been a fan of volleyball games, not even the good ones, so there isn’t much more to say about this except it definitely seems better than the awful Dora the Explorer Soccer game on the other Nicktoons GameKey.

So two games, they’re alright, could have maybe done with a bit more content but what’s there is playable and presents some level of challenge.

Again I’ll put a reminder that the GameKeys end up being part of the Software Lists, so to launch this you’d use “mame64 jak_nick volbird” (you can use any of the NK games as a base, the internal system ROM is ignored when the GameKey is in use)

Let’s look at something I haven’t featured on my YouTube channel yet.

This is the JAKKS Pacific Nicktoons Plug it in and Play TV game. It’s a GameKeyReady unit and was picked up with the help of the 24 donations that were made in the previous donation drive. It was sent to Sean Riddle who extracted the ROM for studying. It uses NK GameKeys, of which 3 were released. The NK supporting line of products features a number of different units, including the previously covered Dora the Explorer ‘Nursery Rhyme Adventure’ game which in all honesty I wasn’t too impressed with. They use 2 main buttons and a digital stick.

This game is much better than the Dora one, it’s a 5-in-1, and boots to a good looking select screen. Presentation is excellent, each game offers an ‘easy’ and ‘normal’ mode from the start.

The first game is “The Fairly Odd Parents! – Channel Chasers” which is a maze based around said show. To clear each stage you must collect all the required objects. There are wands that act like keys to open doors, or provide you with a shield, there are TV themed powerups to rewind and pause enemies and I believe 4 different themes which get rotated. All in all it isn’t especially challenging, as the AI is predictable, but as a maze game for a younger player to enjoy it is very well done; you do have to put some thought into your play and can’t just play it blindly without thinking.

It’s also another game that is going to tell us something about our emulation, because the background on the title screen is meant to be a solid blue with stars, I don’t know where the strange pattern comes from.

The second game is “Spongebob Squarepants Delivery Service” and again actually plays well. It’s basically a forced scrolling run and jump shooter where you must throw burgers at your friends (or use them to pop bubbles that get in your way) while avoiding hazards. Hit the target, a coin appears, grab enough coins within the time limit and you pass the level, otherwise you fail. Difficulty goes up slightly with each stage. It requires decent coordination to watch where you’re going on the ground and move between the hazards, and provides you with a limited number of burgers so you can’t simply spam the fire button. This is well designed and while not overly difficult, I found myself enjoying it, although the lack of variety in stage themes was a shame (it seems to alternate between just 2)

Third game is “Rocket Power Downhill Skateboarding” and this one is not a bad game either. From a technical point of view it only runs at 30fps, not a silky smooth 60fps like the others, but it doesn’t really hinder the gameplay. It’s what you’d expect from this type of game, race down the screen, avoiding hazards, making sure to go through or hit the flags on each gate. Don’t hit a wall straight on or you’ll ‘Wipeout’ and lose a life. The whole thing handles well, controls feel spot on. As with Spongebob, it lacks variety in stage themes, but the stage designs do change enough to make that not really a problem. Only negative I have to say about this is maybe it’s a bit too generous with the extra lives, but I have to acknowledge the target audience.

“Jimmy Neutron – A Beautiful Mine” is the 4th game, and it’s basically Lode Runner for kids, but with a twist that your little robot digs the holes, and takes a few seconds to do so, meaning you must plan in advance if you want to trap an enemy. I’ve always quite enjoyed this style of game and this seems like a good introduction to the genre. Here you have a much better variety of stages and backgrounds too. I can’t really complain, it manages to execute what it intended to achieve well.

The 5th game is a little different to the rest. It’s designed for 2-4 players and takes the form of a board game. Roll dice, choose which direction you want to go, collect the tokens from each location and get home before the other player. It’s something kids of this age would happily play on a board, but here it’s in video form. Not really my thing, but I never liked these in physical form either, however like the rest the execution of the concept is just fine, at no point is it unclear what is happening.

So yes, I was genuinely surprised by this package. I thought all the games with NK GameKey slots were going to be really bad based on the previous experience with the Dora game, but what we have here are 5 games that while not especially challenging, are actually enjoyable for a while. If somebody were to make a ROMhack of this to up the difficulty I dare say plenty of adults could get many hours of enjoyment out of them (not something I’m interested in doing myself, I just do the emulation, but it was a thought that crossed my mind while playing them)

We also got a GameKey with this, but I’ll cover that in a future update.

24 people have donated at this point, and I’ve been able to pick up a good number of the JAKKS Marvel titles etc. for studying as well as some miscellaneous items. We’ve got a complete collection of GameKeyReady units, and all the GameKeys except for the rather redundant 2-in-1 Pac-Man & Bosconian (we have the 3-in-1 which has those 2 and also Rally-X) It’s possible there are alt revisions (we know for at least one game this is the case) but our baseline coverage of those units is good right now. The GameKeyReady units are currently easiest ones for Sean to dump as he has an established technique. The non-GameKey ones (of which we have a good number of units secured) are going to be more challenging, but shouldn’t be impossible (he managed to dump Classic Arcade Pinball previously, which was a non-GameKey unit)

Anyway, trying to balance coverage here with actual work being done is actually challenging; anybody who has been following my YouTube page will likely have seen videos of many of the things I’m going to end up covering before I write about them here, but I do like to have write-ups with static screenshots too so will get round to things eventually.

One of the GameKeyReady units we picked up was “Winnie the Pooh, Piglet’s Special Day” It has a GameKey port code of WP, and no GameKeys were ever released for it. It’s a Disney product, which might make you wonder why it doesn’t use the DY GameKey port code and share games with the Disney Friends etc. The answer is fairly simple, this is a single button unit with a spongy (very squeaky! not sure it was like that 15 years ago or not) Kid-friendly analog stick while the Disney units are digital controls.

This one was very much designed for younger children. It’s well drawn, and animated, but ultimately, as you’ll see, rather shallow. Basic ‘story’ and game instructions are presented in big bold dialog boxes that presumably an adult would have read out.

You choose the games from a grid of 6, the analog stick allows you to move the cursor around, which works well as a control method as you can move more quickly by pushing the stick further or slowly with gentle movements. Some of the games have an easy/hard mode option, with the hard mode usually just meaning you have to do the activity for longer, in most cases you can’t really lose, just repeat until you succeed, you know, like Dark Souls, but even easier.

In Rabbit’s Garden you pull vegetables out of the ground and throw them in a basket, there are also moles trying to steal them. Each vegetable has 3 stages of growth, at the 3rd you can either pull it out the ground (by moving over it and pressing the button) or one of the moles will steal it. If you both go for the same thing then you’ll get it as long as you keep pressing the button. Get 10 (easy) or 20 (hard) in the basket and you win. It really doesn’t matter how many get stolen, the count never goes down, and winter never comes.



Rabbit’s Birthday Surprise involves going full on Metal Gear by hiding in a box with Piglet while grabbing carrots to put on a birthday cake for Rabbit. The cake is the same colour as Piglet and looks disturbingly like a joint of ham. This one does dock you carrots if Rabbit sees you. You can also scare him if you want, which seems a little mean but likely won’t cause as much trauma as when Piglet finds out what the cake he’s sticking carrots in is made out of.



The next game, Butterfly Catch, involves blowing bubbles to catch butterflies. You can also catch leaves too, which is more challenging because there are less of them, but they don’t count. Piglet will free whatever you catch with his stick. Personally I wouldn’t recommend trying this at home as butterflies are defenseless meaning this is just cruel; if you are going to do this, try it with wasps instead, that really should have been what Hard mode was, but alas, it just means you have to get twice as many butterflies. Again there’s no real lose condition here, no penalty for doing anything wrong and no time limit. Pooh Bear was not given a role in the Bubble Bobble movie.



Pooh’s Picnic Fun does have the basics of a game in place. It’s race against Kanga to collect fruit for a Picnic. You must crawl under the bushes by pressing down, and jump across the turtles in the river using the button; fail to do either and you’ll be slowed down. After crossing the river it’s time to toss Piglet high in the air to grab fruit off a tree (a tree of many kinds of fruit, I have no idea if this is Pooh lore or not) and then head back over the river, and under the bushes, to your picnic basket. First to get 3 pieces of fruit wins. You can actually lose here, you have to really try, but you can. Roo probably hates Kanga because she’ll stand there throwing him in the air over and over again making sure he is just out of reach of any fruit until Piglet has grabbed some for you, talk about letting the team down.



Pooh’s Music Corner is very much not a game. At best it’s a limited sound board. You can click on some objects and they make a sound. You can click on some characters and they’ll start playing some music. Maybe it would sound better if our SunPlus audio emulation was better, I’m not sure. If characters are playing music the hunny jar icon in the corner will slowly fill, and at the point it is filled Roo will leap up and grab the jar of hunny from the shelf. So basically the entire game is click on a character and wait, click on more characters and wait less. Clicking on the music box does not actually appear to trigger any kind of sound or animation. Clicking on the hunny jar shows an animation of some being spilled, but worry not, no hunny was actually spilled in the making of this music video as your honey count never goes down.



But.. there is a light at the end of the tunnel in these rather dull mini-games for the final game, Light Tag, might actually prove to be useful.

Light Tag is a simple ‘search our your friends in the dark’ game. You hunt around rocks and trees with your lantern looking for your friends.

The best part about this is that this specific minigame does not currently work properly in MAME, and is the reason the emulation of the machine has been given a NOT WORKING tag. There are 2 issues. The first issue is with the Dynamic Recompiler (DRC). When the DRC is enabled all of your ‘left’ movements in this minigame are interpreted as ‘right’ movements, with the recompiler turned off they correctly move you left. This will almost certainly be useful for fixing a bug in the recompiler. The second bug occurs both with and without the recompiler and is easily triggered too. Once you find one of your friends the game usually locks up completely, making it unplayable from that point (you can’t even exit to menu). This could point us at either another CPU bug that occurs in both cores, or a bug in the emulation of the on-chip peripherals (at the moment where the problem lies isn’t clear)

So yes, even this collection of games, clearly aimed at a very young audience actually has a real use in terms of emulation development and improving our emulation as it provides a useful test case highlighting some flaws that may end up improving other things where the bugs being introduced were less obvious or where we hadn’t even noticed.

There’s also a credits page if you want to see who made this. Personally, jokes I’ve made in this write-up aside, I thought the presentation here was excellent and captures the characters well, but the majority of the game concepts are neither educational or actually fun. It would have been nice to see the ‘Hard’ modes (where present) actually add a degree of challenge rather than just being ‘do it for longer’ as I think even younger kids would have benefited from some sense of progression. Since no GameKeys were ever released for this unit I can’t see it having provided much beyond a day or two of entertainment, I know I would have become bored of it quickly.