The NEW Build Your Own Arcade Controls
Main => Software Forum => Topic started by: Nipedley on August 14, 2009, 05:24:37 am
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Hey guys, again not sure where to put this but I guess it seems most appropriate here. I came here before asking how to implement this in software as part of a project, and successfully made a custom cartridge that would play converted megadrive roms on a mega-tech machine. Now I want to take it further, and build a converter cartridge. (Play megadrive games directly on a mega-tech machine)
The only issue I have with it, is that the megatech pcb expects a rom that has been 16-bit byte flipped/swapped and the megadrive rom hasnt been. I did some electronics a few years ago and suspect my answer may be in logic gates or a chained series of D-Type flip-flops, but need someone a little more savvy.
Basically, how do I 16-bit byte flip/swap address lines through hardware rather than software means.
Any answer gets a cookie :)
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42
Where's my cookie?
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Here you go :) I quite fancy one now actually.
If a mod thinks this may be better suited / get more replies elsewhere please feel free to move it. I sure hope I can find an easy way to do this!
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Just so you guys know, this isn't a problem anymore as I've had a few breakthroughs on this project today.
Full megatech & megadrive cart pinouts are now available on my site to anyone hoping to produce a converter, all you have to do is match the wires :)
It's up to you how to house the electronics for this project, I'm using a sonic & knuckles as a donor for the cart slot on top and to house the rest of it. Once I've built this the appropriate plans & information will be put up on my website alongside the basic info you need to produce this, which is already there.
http://www.nipedley.net/web/projects/megatech (http://www.nipedley.net/web/projects/megatech)