Author Topic: Mega Drive Dump Failed - Bad ROM  (Read 416 times)

Offline Destrax

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Mega Drive Dump Failed - Bad ROM
« on: 10/Jan/2020 10:35:06 PM »
Hi everyone!

I have a problem, I tried to Dump my game "Futbol Argentino 96" but the Rom seems incomplete.
This game is a hack from J-league Pro Striker 2. The game see like this: https://youtu.be/8ElykXlpuyI and it should see like this: https://www.youtube.com/watch?v=9ZmCDfhRlZA.
In my Genesis, the cartridge works Perfect. Any Ideas to resolve this problem?.

More data:
- I Tested the Rom with diferents Emulators, but it doesn't work fine.
- Also tried to Force Size to 3, 4 and 6 MB, but the result is the same.
- I dumped another games and the roms work perfect
- This game never was dumped, only the original.

Offline ssokolow

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Re: Mega Drive Dump Failed - Bad ROM
« Reply #1 on: 13/Jan/2020 12:39:42 AM »
Did you clean the cartridge's contacts? The Retrode is more susceptible to signal noise from dirty contacts.

(In one particularly stubborn case, I had to scrub a Genesis cartridge's contacts with cotton swabs dipped in 99% Isopropyl Alcohol and with one of those white vinyl erasers before it would read cleanly.)

Also, can you confirm that you set forceSystem correctly when you set forceSize? The latter is ignored if the former is left on auto.

Offline Land95

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Re: Mega Drive Dump Failed - Bad ROM
« Reply #2 on: 13/Jan/2020 04:42:33 AM »
I've had enough early dumps which at first appeared fine and after some play discovered they were not - that now I pull the board out of each cartridge, fully clean with 99% alchol, polish with a white high poly eraser, dry, reassemble and only then dump.  No more issues with dumps that have corruption. .

Offline Destrax

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Re: Mega Drive Dump Failed - Bad ROM
« Reply #3 on: 13/Jan/2020 02:12:31 PM »
I cleaned again but the result is the same :(

The forcesystem and forcesize configuration is ok, i increase the size and the rom change from 2mb to 4mb or 6mb (depending on how much i put it)

Other ideas to test?

Offline ssokolow

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Re: Mega Drive Dump Failed - Bad ROM
« Reply #4 on: 20/Jan/2020 01:51:26 AM »
I've had enough early dumps which at first appeared fine and after some play discovered they were not - that now I pull the board out of each cartridge, fully clean with 99% alchol, polish with a white high poly eraser, dry, reassemble and only then dump.  No more issues with dumps that have corruption. .

I check all my dumps against DAT-o-MATIC, so I've never had that problem. The high poly eraser only comes out if the initial alcohol swabbing wasn't enough to get a hash-verifiable dump.

(Specifically, ucon64 -rdat ROMNAME after loading the relevant datfiles into ucon64. I can't remember whether I needed DatUtil to get them into the right format or not.)

Offline ssokolow

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Re: Mega Drive Dump Failed - Bad ROM
« Reply #5 on: 20/Jan/2020 01:55:13 AM »
I cleaned again but the result is the same :(

The forcesystem and forcesize configuration is ok, i increase the size and the rom change from 2mb to 4mb or 6mb (depending on how much i put it)

Other ideas to test?

What version of the firmware are you running? There has been some development which touched the Genesis/MD stuff and I can't remember if/when it's been released beyond betas. (I have almost no Genesis carts, so I was only concerned with beta-testing the SNES enhanced dumping adapter and the N64 save-dumping support.)