Multi Taito Qix Sound Fix and High Score Save

r2084

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Was just talking with Exidy about the multi Taito boards and he was telling me how the sound on Qix is not very good (sucks actually) and the fact that there is no high score save either (on all the games). To me these two things would be enough that I would not want one of these boards, especially since Qix would be a major reason for buying one.

Since the games are all on an SD card, couldn't they be hacked somehow to fix the sounds and perhaps even add a high score save where it could write to the SD card? I know zilch about programming, so maybe someone here knows if this is even possible?
 
Super duper encryption in play. There are threads on here regarding that.
Good that you aren't that interested in them... they seem to be scarce.
;-)
 
To be clear, the sounds on Qix on the Multi doesn't really "suck" so much as it "cuts out". Basically, every time you go to draw a line, the "electric" sounds cut out... but yeah, it does suck.... so I guess you are right... the sounds suck.

:D
 
Dang, too bad! Would've been sweet if it could be hacked to fix it.
 
you can see the files on the card, just cant open any without password

I have looked on mine..

The decryption keys are actually known, so I can extract all the files and check them out. But the game won't run if the ZIP archive is unencrypted. And without the password I can't put any modified files back in the archive. The password is very long, so cracking it is next to impossible. The password is hidden somewhere on the board's non-volatile memory though... someone just needs to pull it out of there.
 
Hmm, very interesting, maybe there's hope after all!

The decryption keys are actually known, so I can extract all the files and check them out. But the game won't run if the ZIP archive is unencrypted. And without the password I can't put any modified files back in the archive. The password is very long, so cracking it is next to impossible. The password is hidden somewhere on the board's non-volatile memory though... someone just needs to pull it out of there.
 
So if the non-volatile ram fails then the board is useless?
Seems dumb

The decryption keys are actually known, so I can extract all the files and check them out. But the game won't run if the ZIP archive is unencrypted. And without the password I can't put any modified files back in the archive. The password is very long, so cracking it is next to impossible. The password is hidden somewhere on the board's non-volatile memory though... someone just needs to pull it out of there.
 
So if the non-volatile ram fails then the board is useless?
Seems dumb

Your assuming non-volatile = nvram. I don't know if it is, but I doubt it. Most likely Flash or EEPROM if I had to guess. If it is an EPROM, if the EPROM fails the board is dead, just like every other PCB unless someone saves the contents and shares it with everyone else.
 
So if the non-volatile ram fails then the board is useless?
Seems dumb

It's flash RAM (28F800), so it's fairly safe. I suppose it's possible that the password is somehow in the Xilinx CPLD (XC9536XL). The processor is a PXA270, which doesn't have any internal flash, so it's not stored there.
 
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