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MAME work and other stuff
February 4, 2019 Haze Categories: General News. 6 Comments on A Tricky Start to February + Donation Drive

As people are hopefully aware, and, if they’ve been following, will have likely seen from the 7 updates already done in January
One, Two, Three, Four, Five, Six, Seven (and plenty of those before that) Eight, Nine, Ten, Eleven, Twelve
I’ve been doing a lot of work with Sean Riddle, Peter Wilhelmsen and others to emulate a whole bunch of old TV game systems, XaviX based, SunPlus based and otherwise.

Some people helped with funding for cartridges earlier a few months back (for which we’re very grateful) and we’ve also invested a lot of our own money into buying up systems for analysis so that we can eventually emulate them too (as I write this there is something like $500 worth of stuff, if not more. being shipped around that Peter and myself have put own own money towards)

However, I’m going to do a first here, and a first in the almost 20 years I’ve been doing emulation, and actually ask if people can gift me some donations directly, so that I can pick up some additional items for this venture that I feel would be useful. I think it’s important to get hold of as many of these kind of thing as we can while there are people active who can process them, and since I currently have no income of my own, it is a struggle paying for these out of pocket.

The following link can be used


If we can raise something like $300 that would help buy a number of interesting bits and pieces and/or help cover shipping for people who have things they want to send. If you want to be credited leave a note with the donation. I’d really appreciate any help people can provide; a lot of this stuff is probably just going to end up forgotten

Anyway, on to the CURRENT update… Starting with some XaviX stuff

In 2004, Radica got a license from Electronic Arts to produce an SSX themed Plug and Play TV game and ended up releasing a TV game running on XaviX based technology. This is therefore probably the most obscure ‘officially licensed’ SSX game there is. It runs on the oldest style XaviX hardware, which really surprised me as visually there’s a lot going on; it’s an impressive looking game, especially compared to the earlier Snowboarder release. It uses entirely digital controls and will be marked as working in MAME 0.207


Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder
Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder
Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder
Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder Play TV SSX Snowboarder
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What is interesting is that Radica reissued the game 2 years later, but with the SSX theme stripped out entirely, presumably because the license to sell the SSX product had expired by that point. The re-released title was simply called Play TV Snowboarder.


Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder
Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder
Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder
Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder Play TV Snowboarder
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Maybe more interesting is that Radica ALREADY had a game called Play TV Snowboader, from 2002. After giving this a good testing I’ve decided to mark it as working for 0.207 as well. It’s much more primitive than the newer game, but still, I’m surprised the newer game didn’t have a ‘2’ appended to the title.


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Another XaviX game, an seemingly quite an uncommon one at this point (or at least one that’s in a market full of so many products with a similar name and thus difficult to find) is Barbie Dance Party. It’s a ‘watch and copy’ game, a bit like Simon, but in this case, because it’s aimed at kids, it simply tells you what you need to press. It’s not unpleasant, despite the scathing reviews you can find of the product; I guess it’s just a bit dated for a 2002 product, offering basic tunes and very simple gameplay.


Barbie Dance Party Barbie Dance Party Barbie Dance Party
Barbie Dance Party Barbie Dance Party Barbie Dance Party
Barbie Dance Party Barbie Dance Party Barbie Dance Party
Barbie Dance Party Barbie Dance Party Barbie Dance Party
Barbie Dance Party Barbie Dance Party Barbie Dance Party
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We also toned down Shaggy’s power a little, so he can no longer walk on water as seen in previous screenshots. This actually turned out to not be a CPU bug at all, but a bug in the SoC emulation, the random number generator of all things, apparently unexpected / out of range value cause bad things to happen. I started to track down the issue looking at what I thought was an unrelated thing in one of the Disney minigames, and Mooglyguy worked out the problem originated with the number generation, the fix here was entirely unexpected! Still needs the save feature looking at tho.


Jakk's Scooby Doo Jakk's Scooby Doo Jakk's Scooby Doo
Jakk's Scooby Doo Jakk's Scooby Doo Jakk's Scooby Doo
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MooglyGuy also mapped the inputs for Star Wars Revenge of the Sith, which turned out to be analog (with a rather large dead-zone, making it difficult to play with digital controls) Both the base games and game key games are playable although sound is pretty rough still.


Star Wars Reveng of the Sith Star Wars Reveng of the Sith Star Wars Reveng of the Sith Star Wars Reveng of the Sith

Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith

Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith

Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith

Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith

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Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith

Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith Star Wars Revenge of the Sith

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In addition to those, and other little bug fixes, I also started reverse engineering the earlier hardware type used by Classic Arcade Pinball, although having only a single game to work with for this chip type makes conclusions more difficult to deduce from the behavior.


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Finally for this update, a mention of Radica Play TV Basketball. This one runs on ELAN type hardware and like quite a few others was developed by FarSight Studios, and is one of those annoying things with a motion tracking camera, so not really sure how to map the inputs right now. Still some work needed on the video/audio emulation as well.


Radica Basketball Radica Basketball Radica Basketball
Radica Basketball Radica Basketball Radica Basketball
Radica Basketball Radica Basketball Radica Basketball

If you’ve scrolled down this far and are still interested, then please, if you’re able to, consider throwing a donation to the PayPal address shown at the top of this post, it will help allow for more updates along these lines in the future. I understand that people would like to see arcade work too, but for now this is what is keeping me interested in the project, so naturally the arcade side of things will benefit too from my continued involvement.

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Your paypal image does not link right to paypal. Might want to fix that so we can throw money at you :)

what happens? the email address listed in the image is set up as a secondary email on my primary account, which should work

I’ve included an actual button. It should work? was hoping to keep the address out of plaintext, but that seems to be problematic.

*edit* yeah, this definitely works now, got a friend to transfer me something.

with the donations so far I’ve managed to pick up a bunch of the JAKKS Game Key Ready units to have shipped to Sean

This includes the Namco one, with Game Keys etc. so something potentially interesting for arcade fans too as those are some of the final ports of the game before everything was just emulation based.

Hello Haze,

In the Star Wars video that is posted right after the Scooby Do video, something doesn’t sound right.
https://youtu.be/iWNrQmVuCJE

You can hear random notes being triggered that don’t make sense musically, or as sound FX, and it seems to happen all through the game.

Already mentioned
“Both the base games and game key games are playable although sound is pretty rough still.”

Sound emulation is a lot more difficult than most people realize, especially when things aren’t really documented properly anywhere.

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