The ColecoVision version of Gyruss was programmed by Parker Bros. And to be honest it isn't specially great.
Now, I am really glad to see Ricbit took his time to port my ColecoVision game Space Invaders Collection for the MSX. It is a proof people can work together in favour of different user groups. Hope it help to open a few minds here...
And of course the ColecoVision to MSX SDK is indeed a impressive tool. Fantastic work Ricbit!

Some months ago I tried to contact Marcel DeKogel, who has also moved to the Colecovision scene, if I am not wrong, to offer him the port of GURU LOGIC (for MSX1, not the MSX2 licensed version coming soon). I have received no answer and, some months later, the game was banned.
Anyway, please have a look at the Karoshi Corp. games: I have the source code and they could be easily ported to Coleco. Check them at http://www.robsy.net/result04.htm (only the Karoshis, of course).

Regards,

Euhm Pitpan, we'discussing porting colecovision games to MSX games here, not the other way around.

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The ColecoVision version of Gyruss was programmed by Parker Bros. And to be honest it isn't specially great.

I've always wanted a good Gyruss MSX port...

There's a Konami game called Rock'n Rope for Coleco. I never saw it in MSX.

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There's a Konami game called Rock'n Rope for Coleco. I never saw it in MSX.

It was programmed by Coleco themselves. The ColecoVision version of Time Pilot was also programmed by Coleco.
BTW, the CV version of Frogger is better than the one available for the MSX. I would recommend it. Any other Konami game...? Super Cobra! The MSX version is better.
Not exactly Konami related but maybe of interest, I am currently porting Pac-Man and Ms Pac-Man for the CV. My version is far more faithful than that Namco programmed for the MSX. Gameplay wise it is even more faithful than the PS1 version. In fact, gameplay is arcade perfect, and you can even use your Pac-Man patterns to beat the game. I can assure you they will work.
Maybe ricbit could port it for the MSX when the game is finished (I am almost there).

Eduardo

Port Coleco games to MSX is a good idea, but you can also try to solve this Quiz :

http://www.msx.org/forumtopic4018.html

I once made a Colecovision patcher (never released it though, but I could play plenty of Coleco games with sound). Michel Shuqair was developing one at the same time. This was a long time ago, though...

What I can remember:

- The sound chip was different from MSX. Replace the sound 'OUT's' to RST calls (same length opcode, saves you from a lot of trouble). Either emulate them there or put a simple 'RET' for no sound-emulation.
- The VDP used different I/O ports. Simply replace 'm with the ones used by MSX (searh for the TI VDP ports @ MSX 1 & Colecovision on the internet).
[The tricky part is: LD C,<port>; OUT(C),value; But a lot of games run even when you don't consider this case.]
- The BIOS calls were used extensively those days. Get the ROM and disassemble it. Make optimizations to make up for the sound emulation (plenty of oportunities; it looks like converted 8080 code). Now make sure it ends up in the memory map like it should, so that function calls in the original ROM don't have to be patched.

Et voila!