dma wrote:Ah, i got an X68000 game back in my mind which would probably be a good candidate for porting : Chelnov (also named Atomic Runner).
I don't think it uses advanced graphic system, just scrolling and sprites. But it's really an arcade gem imo.
Anima wrote:However, I've taken a first look into the mechanics and source code and it's indeed a good candidate.
EvilFranky wrote:Which other game are you also working on?
Or is that a secret?
NGF wrote:Is Galaga finished now or will there be additions (jagpad? ym-sound?)
The dream would ofcourse be Castlevania or Street fighter (with 6 button jagpad support) but i doubt it would be very fast, its better to have games close to full speed
EvilFranky wrote:Hmm, I'm not 100% sure but I think ADPCM was used in the TBL demos which were converted to the Falcon by Mikro??
MrMaddog wrote:I know it's still experimental right now, but it would be great to play a proper version of Street Fighter II...
And also the X68000 version of Castlevania is wicked. Played it on the PSX once, but it's so rare to find.
Desty wrote:Last year I was planning to write a 68k disassembler capable of properly disassembling the SF2 arcade binary (also a 68000 board, probably very similar to the X68000 setup and maybe sharing portions of the code), since several existing disassemblers didn't seem to work well with the MAME dump. It seems that parts of the binary are interspersed with chunks of data which the disassemblers get confused by, and produce garbage instructions or illegal opcodes which fail to assemble later. Not sure why they don't just fall back to DC.B when encountering illegal instructions. Maybe the X68000 version is more accessible in terms of binary layout and data in actual files etc.
Desty wrote:A decent Castlevania port would be amazing on the ST, too - I've only played the brilliant SOTN on PSX and a tiny bit of Castlevania IV (IIRC) on SNES, great fun.
EvilFranky wrote:Do you think it would be possible to disable the parallax layers to provide a 'cut down' version?
Anima wrote:Interesting story. I am not sure if the CPS-1/2 protection has something to do with this!?
So you have stopped any further development then? What was your intention?
Desty wrote:It's straightforward to step through the code in the MAME debugger; it might just be that I don't know enough about the layout of the binary in the multiple ROMs. And the disassemblers I tried (including Desert Drain and a couple of other Atari jobbies) expected a familiar TOS layout too, I guess?
It was more for kicks than anything - I wanted to modify the SF2 World Warrior ROM to allow the bosses to be selected (they are entertainingly overpowered in that version), but realised MAME wouldn't let me overwrite memory that was in emulated ROM space. So I wanted to disassemble, patch and reassemble it... soon enough I'll come back to it
NGF wrote:What about Mega Drive? Slower CPU and less colors than those other systems. Perhaps Flashback would be a good candidate. But no rush X68000 have plenty of games
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