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Messages - hadess

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General Discussion / Re: Adaptors
« on: 10/Sep/2017 03:27:44 PM »
Just wanted to add that the 32x while plugged into the retro gold genesis port will rip 32x games fine, ive had no problems with that.

If somebody wants to add to the list that 32X cartridges (I've only tested it with Star Wars Arcade mind!) can be rippped using a simple region converter. You can also take your Retrode or cartridge apart for it to physically fit in the Megadrive slot.

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> @hadess whats wrong with just using that markiii to megadrive converter with the retrode? The schematic looks pretty straight forward so it should work.

Well, because it didn't work ;)

I should probably have added this information in my first post, but I had been putting off posting for so long, that I didn't even think to try and explain why I went down this path.

I have 2 cartridges that work out of the box with the adapter on my Megadrive II PAL:
- Enduro Racer (Mark III)
- Alex Kidd In Miracle World (Mark III)

Those 3 games will not boot without stack init. A trick that's mentioned on the Raphnet page is to swap a working cartridge quickly with a non-working one, while powered off. Another way, which I wouldn't recommend but works is to start the Megadrive with the adapter but not the cartridge, insert the cartridge and press Reset. Anyhoo, the 3 games:
- Alex Kidd BMX Trial (Mark III)
- Space Harrier 3D (Mark III/SMS)
- Opa Opa (Mark III/SMS)

All 5 of those are detected as 4 megs "GenericRomInSegaSlot.dat" dumps. Dumping the ROMs ends up in garbage.

There's a few active components on the Mark III/SMD adapter, where the Retrode SMS adapter has none.

Hope that clears any doubts about the reason why I'm asking ;)

(and if you want to share your pinout for the card reader, probably in a separate thread, it'd be appreciated!)

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Hey!

I have a fully loaded Retrode 2, including the Master System adapter, but I've been buying a few Japanese Mark III/Master System games which I wanted to be able to dump.

There's a couple of threads already about various third-party adapters being tested, none working from what I can tell. So I thought I'd "make" my own. Here's my thinking, and do stop me if any of this sounds wrong.

1. Find the physical bits needed to connect everything. That was relatively easy. After spending a couple of hours (!) on electronics supply sites, the cheapest way to get a MegaDrive connector on one end, with a Mark III connector on the other is Raphnet's Mark III for Megadrive adapter:
http://www.raphnet-tech.com/products/brd_markIII_to_smd/index.php
and here are the schematics for it:
http://www.raphnet-tech.com/downloads/markIII_to_smd_schematic.png

2. Let's forget the above for a moment, and find out how the SMS adapter is pinned out. I found this:
http://consolingmyself.co.uk/post/18692678762/retrode-sms-gg-plug-in-adapter-pin-out
Is this still accurate? Let's assume it is and move on.

3. We need to find out what the differences are between the SMS and the Mark III pinouts. I found this on SMS Power:
http://www.smspower.org/Development/JapaneseSMSCartridge

And at this point I'm kind of stumped as to how to use all this information. I think I'm missing an "export SMS to Mark III diagram" somewhere. Ideally, it'd support Mark III and Japanese SMS games[1], but I already see some difference in wiring for some lines that the Retrode uses (though I could have had my numbers crossed).

Any ideas? Cheers

[1]: Bonus point if I can dump those 2 SG-1000 cartridges I have ;)

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