itch.io

That is entirely possible. It may well be that the sprite coordinates are not placed exactly where they should be. Early hardware had known nuances with some (eg. 1 or 2) sprites being offset a few pixels with respect to the other sprites. In fact, I'm currently working on Frogger (same hardware) and did have to tweak the sprite routines that I lifted from Galaxian; Frogger has the advantage in that the background can be used as a reference, though of course the background is also subject to its own nuances. I'll finish up on Frogger and revisit Galaxian to see if there are any changes I should back-port.

I'm also thinking it may be possible to implement a non-tate mode for Galaxian as well!

Thanks! I'm hoping I can do a non-tate version too!

Again, nice, thanks!

Nice, thanks!

Xevious, doubtful. I've tried to think how scrolling would work in non tate mode, but I just don't see how it could be done. But maybe I just need to think about it again after coming back from a break. Will need scaling to fit the entire screen though...

Galaxian, maybe. Similar issue to Xevious, but less demanding. I'll think about it. 

Awesome work. I know you don't take requests yourself, but you may want to consider getting in touch with jotd (https://jotd666.itch.io/) who has done some amazing transcodes/ports to the Amiga. He'd hit the ground running with your source base...

Added (untested on real hardware)

Let me know what I can do!

I can help with coins/credits if you like!?!

Yet to try it, but you should add your own entry into the hash/neogeo.xml file so you don't need to masquerade as Super Side Kicks.

Never seen Xevious (puzzledp) hang in MAME and I've run it literally hundreds of times!?!

Blog entry

That is way cool!!!

'mame puzzledp' or 'mame neocdz -cdrom xevious.iso'

Beta2 will remove the need for masquerading as puzzledp