Author Topic: Master System not working ROM's on MEGA EVERDRIVE  (Read 13582 times)

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Offline TonyN

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Master System not working ROM's on MEGA EVERDRIVE
« on: January 05, 2013, 09:57 PM »
Received our Mega Everdrive this morning, loaded our backup roms ok and virtually all MD roms are working.
BUT, four out of five Master System Roms are not working - am I missing something?

Please advise.  Thanks in anticipation

Offline Chilly Willy

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #1 on: January 05, 2013, 10:23 PM »
You could try going into the options and setting the mapper directly. The mapper for SMS games defaults to "auto" which might be the trouble. Also remember that SG-1000/3000 games don't show any video on the Genesis as the Genesis VDP lacks the old TI video modes that the SG uses.

Offline Redifer

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #2 on: January 06, 2013, 02:59 AM »
Also make sure your roms aren't Zipped.

Offline KRIKzz

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #3 on: January 06, 2013, 03:05 AM »
Possible reasons:
1) I seen rom sents where a lot of roms contains 512byte header, such roms will not work
2) sms game will not work if rom extension is not equal to .sms /.gg/.sg/.sc/.gg
3) sms games does not work if you trying to play them with attached 32x
4) sms games dos not work with xeye and Wondermega  systems
5) some sms games may not work if sega cd is attached
« Last Edit: January 06, 2013, 03:09 AM by KRIKzz »

Offline TonyN

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #4 on: January 06, 2013, 02:36 PM »
Thank you for taking the trouble to help me, I am trying to get our old Megadrive working with a new Mega Everdrive ready for my 3yr old Grandson.
Never too young for video gaming, my son had his first VECTREX console at 4 years old. :)

Offline Chilly Willy

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #5 on: January 06, 2013, 08:54 PM »
An old Genesis is a great console for kids. There was a thread over at Sega-16 where someone asked for suggestions since he was giving a Genesis to a kid for xmas. You have all the Disney games, the Sonic games, and many others. There's some good SMS games for kids as well, once you figure out how to run them. :)

Offline Kokonoe

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #6 on: October 06, 2014, 05:15 AM »
Possible reasons:
1) I seen rom sents where a lot of roms contains 512byte header, such roms will not work

Is there a way to make them work?

Phantasy Star works but Phantasy Star patched with a translation ends up not working and both have 512bytes

Offline tertu

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #7 on: October 06, 2014, 05:28 AM »
If the patch doesn't work, it probably does something that a real Master System doesn't allow or you patched it incorrectly.

Offline Kokonoe

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #8 on: October 06, 2014, 05:42 AM »
If the patch doesn't work, it probably does something that a real Master System doesn't allow or you patched it incorrectly.

I'm utilizing this patch.

http://www.romhacking.net/translations/1069/

and it says "Checksum fixed for play on a real system", so perhaps I'm doing something incorrect here. I notice master system games tend to not work at all anymore interesting enough. Perhaps bios issue?

Offline tertu

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #9 on: October 06, 2014, 10:45 PM »
I'll give that a shot on my MED later, as I know Master System games work on it.

Offline Assman

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #10 on: October 07, 2014, 01:23 AM »
Try using SMS Checker. Most of my SMS set wasn't working either, but that fixed all the headers so they would run without issue.

Offline J-E

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #11 on: October 07, 2014, 09:03 AM »
What are these not working roms?
some games like F-16 fighter will never work on a megadrive.

Offline D.Lo

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #12 on: October 11, 2014, 01:29 PM »
I have some games that work half the time? Kung Fu Kid boots 50% of the time for example?

Offline D.Lo

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #13 on: October 12, 2014, 02:52 PM »
Ah, SMSchecker fixed all for me, now all work first time!

If only there was an app like SMSchecker for other consoles!

Offline Travoltron

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Re: Master System not working ROM's on MEGA EVERDRIVE
« Reply #14 on: October 13, 2014, 07:12 PM »
What's the deal with all these Korean(?) ROMs in the latest GoodSet marked (K)?  I've never been able to get any of them to work, even in the Kega Fusion emulator.
Has anyone gotten the previously mentioned F-16 Fighting Falcon working?