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ROMS question

Poibug

Poibug

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This is related to my Power Drift problem,but is just as relevant for a pin.

How can you test if the code on a rom is still good?Or is it not possible-just reburn it?

Interested as if burners can test the code that would remove a bit of fault finding in my case,or others going forward on other arcade games?
I can probably google it,but would like to here it here who have direct experience of it.Ie checked a rom-found it bad put new one in game fixed.Or maybe tested ok but was still actually fooked
 
TYHO said:
This is related to my Power Drift problem,but is just as relevant for a pin.

How can you test if the code on a rom is still good?Or is it not possible-just reburn it?

Interested as if burners can test the code that would remove a bit of fault finding in my case,or others going forward on other arcade games?
I can probably google it,but would like to here it here who have direct experience of it.Ie checked a rom-found it bad put new one in game fixed.Or maybe tested ok but was still actually fooked
Click to expand...
Luke wells is ya man I would of thought for this?
 
Yea a chip programmer allows you to read as well as write to ROM chips. If you have copies of the original files these can be used to verify that the content on a chip is identical. If you're looking to buy a chip programmer I can recommend the MCUmall GQ-4X. The software it comes with is really easy to use and it has reliably done everything I've ever asked of it. Just type "GQ4X" in to Youtube to get a better idea of what its all about.

I've just downloaded the ROMs for Powerdrift and there are 52 different files, are there really that many ROMs in the game?
 
I may well be able to run them off for ya @TYHO - depends on how many and what type they are. Or If there are the original files then the roms could be re-verified against them....

Fairly time consuming, however do-able :)
 
aaronhicksuk said:
Yea a chip programmer allows you to read as well as write to ROM chips. If you have copies of the original files these can be used to verify that the content on a chip is identical. If you're looking to buy a chip programmer I can recommend the MCUmall GQ-4X. The software it comes with is really easy to use and it has reliably done everything I've ever asked of it. Just type "GQ4X" in to Youtube to get a better idea of what its all about.

I've just downloaded the ROMs for Powerdrift and there are 52 different files, are there really that many ROMs in the game?
Click to expand...

cheers for reply

48 for mine - 12 for cpu/sound rest for video stuff

deluxe version has four extra roms

Either way will eventually have to change 4 as mine are older
11901,newer is 12017
11900,newer is 12016
11902 and 11903 are now 12018 and 12019 all appear to be program roms
 
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That's a hell of a lot of ROMs. The files are all available online though so it can be done, but as Paul said would be quite time consuming. That said I'd be more than happy to help you out if I can.

The individual files don't look any bigger than 512KB so I doubt any other adapters are needed to read/write @Paul. What burner do you use?

Are all the chips labeled in the game? If not that would be a good start!
 
some are testable via the game test,tho not al
if that built in test is reliable(or pretty reliable)it cuts down the total number I could ask to get "shotgun "burned.Well 24-27,53,54,80,81 to be precise-so only 40 left!!The rest of the test is the rams,thats all testing ok in game

I think,as I have sound problems a good start would be to verify al 4 sound IC's epr 11753 the sound program,and,maybe more importantly the three 2meg sound data ones 11892-11893 and 11894.

Then ask around re graphical problems as testing the other 35 vid ones would,as said take forever!!
 
personally i would start (as per your other thread) by pushing them all home, and also checking the voltages into the boards. not sure, however is it a JAMMA connector in the cab? if so, see if someone local has a JAMMA board you can test first - this will rule out the Cab/voltages and associated wiring. Then it's time to concentrate on the boards. Boards of this age will tend to have connection issues (if they are multi-boards), and check out the usual caps bulging also, along with any dry joints. Reseat and clean all connectors with a fibreglass pen :)

P.s. if it needs to be done, it needs to be done :)
 
I've plenty of personal experience of (hidden but very manky) chip holders from 20 year old plus circuit boards, so I'd look at replacing the ROM chip holders first priority.
 
if you can read your own roms,just use romident ,it's easy to use and can usually check if your burn't rom is good or bad
 
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