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I've just managed to get both running from the same image, selectable from my splash screen. It was an interesting exercise getting both building from the one set of source files in the same binary. I used a little trick I once saw in MAME; assembling the same source files twice using --defsym...

Thanks! I'm a big Galaga fan, the others not-so-much. It would be interesting to see of any of the others use a similar code base, though I don't see that Galaga would be a good fit for the Xevious code. I've been looking at Super Xevious and have all-but-finished the RE for that. The code base...

Yes, that was actually an emulation written in C and I was in contact with the author (Cristiano Bey) early on in the project and gave him some assistance getting graphics from the emulated video memory onto the Neo Geo display. I think it was always going to be a big ask to have the Neo Geo...

Sorry, missed this one. Hadn't heard of it until you mentioned it. Watched a bit of the YouTube; seems like a decent game but not quite my cup of tea, plus I don't have any connection to it like GnG, Bubble Bobble, Raiden etc. Choosing a horizontal (for me) is difficult because although there...

Now Truxton I do like, though I've actually only played the Genesis/MegaDrive version. I am looking to do a horizontal title after DK though; I think it'll have a wider audience in the Neo Geo community (not interested in transcoding a home port of an arcade game to the Neo Geo either - it has...

Single NEC V30 @8MHz... probably doable, and TBH I think R-Type would suit the Neo well. But try as I might, I just can't bring myself to like R-Type. I've given it plenty of chances, even on the Amiga, but I really don't like it. I acknowledge that a lot of people love it though.

Indeed! But they could be sitting there idling for 3/4 of a frame... interesting that System16.com don't have an entry for Raiden...

It is a timeless classic, I have to admit!

I don't see that as viable. 2x 10MHz NEC V30 plus Z80 sound coprocessor...

Thanks! I really like both those games! I actually have Bubble Bobble on my short list; it'd be a good fit but perhaps it's not quite as "impressive" as GnG?

Double Dragon doesn't interest me in the slightest. Isn't there a Neo Geo version already? Ghosts 'n' Goblins OTOH is actually on my short list. A quick look at the MAME driver tells me the background layer is 16x16, which is perfect! 6809 CPU, which I've developed for before, and of course...

I thought long and hard about this. Aside from losing 64 pixels (8 tiles) of vertical resolution, there's the issue of scrolling the screen in the other dimension. Ordinarily with 16x16 tiles that wouldn't be a problem (of course a lot of other games do), but Xevious uses 8x8 tiles for the...

Was it set to FREEPLAY by any chance? That's the game trying to play the COIN sample at 60Hz... (solved for next release - see above)

Yes, it's a bug. Confirmed in MAME (MVS)... Not sure how to solve this one. The entire game is basically running as a Neo Geo demo because it (the original) just wasn't designed to work with the Neo Geo BIOS framework (bloody NAMCO, right?) It calls BIOSF_CREDIT_CHECK and BIOSF_CREDIT_DOWN when...

Neo XYX. Not sure about any others... Donkey Kong will be too, though I hope to have both options...

Looked it up on Google Maps. Her holiday home is in the Sound of the Sea estate right across Highway 58 from your friend's restaurant. I walked through that strip mall a few times whilst I was over there, mainly to buy salt-water taffy. No doubt I walked right past the restaurant, though I don't...

Thanks! Incidentally I'm flying out to San Jose on Thursday to work in Fremont for 2 weeks!

Thanks! I've actually been in your neck of the woods, well close by anyway. Visited Cherry Point Marine Corps Air Station where my brother-in-law was squadron CO, whilst we stayed at their holiday house in Emerald Isle!

Hi all, I'm (just) old enough to have played a coin-op Pong machine and of course hung around the arcades playing Space Invaders, Galaxian, Donkey Kong etc. After a hiatus from the arcades in my teens due to the fact that my father brought home a computer (TRS-80 Model I) one day, I was...