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ssj Offline
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Nice to see the Mattel Sports games being added! Seems you ended up adding COPS I emulation in the process eh? Great stuff!

Pretty awesome to get Black Knight Pinball preserved too, that's a rare one. I can't check right now, but is Entex Raise the Devil already preserved btw?

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Basket Ball I played in the past. I remember those red lines.


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Rik Offline
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Originally Posted by ssj
Pretty awesome to get Black Knight Pinball preserved too, that's a rare one. I can't check right now, but is Entex Raise the Devil already preserved btw?

Yeah, I was glad there was a way to preserve it without destroying the game smile
Raise the Devil has been in there for a while already...

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hap Offline
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MM5799 is not a commonly used MCU on handheld games, with so little to test it with I'm glad it is emulated pretty much bug-free.

It's also used on the Sinclair Cambridge Programmable:
https://pbs.twimg.com/media/ERJYPZCWsAERJuI.jpg

Last edited by hap; 02/17/21 05:56 PM.
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Rik Offline
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Hmm, looking at this patent:
https://patents.google.com/patent/US4582323A

The Mattel Look Alive Football seems to be a COP421L. Can those be dumped non-destructively?
I found a couple of these in storage so I can probably share one if needed...

Then if someone can just follow the flowchart and program this one:
https://patents.google.com/patent/US4395760A

We could have a game that was never released... smile

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hap Offline
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A COP421 chip, yeah.
But knowing Mattel's early handhelds, they may have plonked the MCU die straight onto the PCB, then it can be harder to dump non-destructively.

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Rik Offline
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Yeah, I was trying to find a picture of the circuit board, but I don't have one handy. I'll get the game this weekend and take a look.

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ssj Offline
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Rik, any update on those games you were going to ship to kevtris? I'm looking forward to finally see the whole Select-A-Game library preserved.

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Ahh, no, forgot all about them... I'll get them boxed up this week, hopefully to ship either over the weekend or early next week.
Still have only found Pac-Man though. Found the Basketball manual, but still haven't found the cart...

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Originally Posted by hap
A COP421 chip, yeah.
But knowing Mattel's early handhelds, they may have plonked the MCU die straight onto the PCB, then it can be harder to dump non-destructively.
Okay, found pictures of it... Looks like the die is on the PCB directly, but covered by a plastic cap that looks like it can be easily removed...
So maybe...?

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