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View topic - Mark III cartridge on a PAL SMS

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  • Joined: 29 Dec 2021
  • Posts: 41
  • Location: Italy
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Mark III cartridge on a PAL SMS
Post Posted: Wed Dec 29, 2021 1:22 am
Hi at all

I'm Toshio from Italy,

i ask an information to playing the Mark III
cartidge on a western, Master System.

Any possibility to playing the Mark III / MK-2000 cartridge,
on a CCIR (PAL) Sega Master System?

On the net i don't find any information on this.
Why anyone not prototyping a reverse adaptor for this?
Are a severe hardware problem to built one?


Thanks again,


Greetings,


Matt
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  • Joined: 25 Feb 2013
  • Posts: 384
  • Location: Osaka
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Post Posted: Wed Dec 29, 2021 5:11 am
No problems at all, I built one.
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  • Joined: 29 Dec 2021
  • Posts: 41
  • Location: Italy
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Post Posted: Wed Dec 29, 2021 6:28 am
kamillebidan wrote
No problems at all, I built one.


Thanks kamille,

you have the pinout of this adapater or how to buit one?
But any problems withe the internal BIOS?

Thanks,

Toshio
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  • Joined: 25 Feb 2013
  • Posts: 384
  • Location: Osaka
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Post Posted: Wed Dec 29, 2021 6:34 am
https://www.smspower.org/forums/16912-SG1000SC3000MarkIIIJPSMSRArrExportSMSRArrG...

The bios will refuse to boot many games, because they do not match the checksum. In that case, a flash cart approach would be necessary. You'd need to boot a fake, checksum matching "cart" and then run the actual game.
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  • Joined: 29 Dec 2021
  • Posts: 41
  • Location: Italy
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Post Posted: Wed Dec 29, 2021 7:07 am
Thanks kamille.

I'm happy is possible to built this adaptor.
If i have another doubt i posted here.

16811-ThanksToThisSiteFinallyMadeAWorkingMarkIIISMSConverter

Thanks,

Toshio
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  • Joined: 26 Feb 2021
  • Posts: 158
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Post Posted: Thu Feb 24, 2022 9:23 am
I made this adapter to circumvent the BIOS checks:

https://www.smspower.org/forums/18921-SG1000SC3000MarkIIIAdapterToMSNoBIOSMod
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