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General Category => Support => Topic started by: Destrax on 10/Jan/2020 10:35:06 PM

Title: Mega Drive Dump Failed - Bad ROM
Post by: Destrax 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.
Title: Re: Mega Drive Dump Failed - Bad ROM
Post by: ssokolow 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 (https://www.retrode.org/documentation/the-retrode-cfg-file/) when you set forceSize? The latter is ignored if the former is left on auto.
Title: Re: Mega Drive Dump Failed - Bad ROM
Post by: Land95 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. .
Title: Re: Mega Drive Dump Failed - Bad ROM
Post by: Destrax 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?
Title: Re: Mega Drive Dump Failed - Bad ROM
Post by: ssokolow 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 (https://datomatic.no-intro.org/?page=download) into ucon64 (http://ucon64.sourceforge.net/). I can't remember whether I needed DatUtil (http://www.logiqx.com/Tools/DatUtil/) to get them into the right format or not.)
Title: Re: Mega Drive Dump Failed - Bad ROM
Post by: ssokolow 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.)