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NeoGeo 3D ! by Oxygene [web]
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added on the 2012-05-04 23:03:54 by leonard  |
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WARNING: Pouet.net currently does not support NeoGeo platform. That's why that entry is classified as "NeoGeo-pocket"
This demo runs on real NeoGeo and NeoGeo-CD hardware !
This demo runs on real NeoGeo and NeoGeo-CD hardware !
Last but not least, if you want to see a video, go here:
http://leonard.oxg.free.fr/download/NeoGeo_3D.avi
http://leonard.oxg.free.fr/download/NeoGeo_3D.avi
Leonard RULEZ as usual :)
Tried it on Nebula 2.25b and everything works ok apart from sound (there is none on win7x64). The game to load in order for the demo to run is "Puzzle de Pon" - ignore the CRC warnings. Oh yeah, get a zip of the bios roms before you try running the demo.
I also tried it on MAME (complains about CRC and doesn't run), and Kawaks 1.59 (it's so inaccurate that it shows how the demo works ;))
Anyway, fun :)
I also tried it on MAME (complains about CRC and doesn't run), and Kawaks 1.59 (it's so inaccurate that it shows how the demo works ;))
Anyway, fun :)
Neo-Geo \o/!!! excellent, great work Leonard.. yes it's the first on a great Arcade hardware!
I have always great interest by Leonard's code.
the future is now!
ggn: to bypass the mame crc check, juste run the game from command line
mame puzzledp
if a rom is specify, it bypass the crc check, so it runs perfectly on mame (but the sound is less accurate than a real hardware)
mame puzzledp
if a rom is specify, it bypass the crc check, so it runs perfectly on mame (but the sound is less accurate than a real hardware)
Leonard is back! And in an unexpected platform!!!
Awesome. Love the NeoGeo. Please allow me to have the honor to youtube it.
neogeo! memories from the good old days :D instant thumb!
Cool.
Immediate platform-thumb!
whoo. neogeo.
platform records on obscure hardware! YEAH! :D
I guess some of you will be hurt by nasty graphics of this demo, and I agree :) This is "oldskool" demo so the only goal is to have technical tricks, and no nice graphics... Here are some details about the three technical tricks used here:
1) A big spinning filled vector cube. NeoGeo can't do software rasterizer because graphics are only made of tiles, located in ROM (CPU can't modify tiles bitmap)
2) The color bars are disting in Y axis, so it required sprites. There is 32 bars of 20 sprites each (NeoGeo sprite is ALWAYS 16 pixels width) wich means 640 sprites! But Neogeo only support 384 sprites!
3) During the demo you're listening an ATARI-ST music! It's a ST-Sound YM music, my own ATARI sound emulator. I'm sure you never hear that kind of sound on your NeoGeo :)
1) A big spinning filled vector cube. NeoGeo can't do software rasterizer because graphics are only made of tiles, located in ROM (CPU can't modify tiles bitmap)
2) The color bars are disting in Y axis, so it required sprites. There is 32 bars of 20 sprites each (NeoGeo sprite is ALWAYS 16 pixels width) wich means 640 sprites! But Neogeo only support 384 sprites!
3) During the demo you're listening an ATARI-ST music! It's a ST-Sound YM music, my own ATARI sound emulator. I'm sure you never hear that kind of sound on your NeoGeo :)
Nice to see a NeoGeo prod.
Is the YM2149 emulation done on the 68k or the Z80? I was thinking that to save cycles on the 68k you'd send one batch of YM register values to the Z80 every frame and let the Z80 do the YM emulation using the SSG channels.
The main problem with that is that you'd be hard pressed to do software emulation of the YM envelope generator at full speed on a 4MHz Z80. Of course, if your song only uses low/mid EG frequencies and you just emulate the EG well enough to handle those frequencies, then you'd be fine :P
Is the YM2149 emulation done on the 68k or the Z80? I was thinking that to save cycles on the 68k you'd send one batch of YM register values to the Z80 every frame and let the Z80 do the YM emulation using the SSG channels.
The main problem with that is that you'd be hard pressed to do software emulation of the YM envelope generator at full speed on a 4MHz Z80. Of course, if your song only uses low/mid EG frequencies and you just emulate the EG well enough to handle those frequencies, then you'd be fine :P
mic: you're almost right. 68k only send a "tick" command at 50hz (ATARI music are 50hz). Then Z80 wake up at 50hz, and depack YM registers (all data is packed in Z80 ROM, the packed music is about 43KB). And then the magic trick is that NeoGeo has a YM2160 chip, far better than ATARI YM2149. BUT, the YM2160 has a SSG part (simple sound generator), which is hardware compatible with YM2149 :) So no software emulation, I simply put the registers into the SSG par of the YM2160
Fuckin' cool!
I want a longer videoversion :)
Cool! Nice to see exploration of obscure hardware!
now make a trackmo! :)
eh.. and by trackmo i mean a non-onescreener..
Yes !
Yes
Cool for NeoGeo.
.
Quote:
graphics are only made of tiles
I had no idea. That explains the huge ROM sizes when I used to download them back on my 56k.
serious neo geo trickery!
@leonard: gotcha. I thought the SSG part was something similar to SN76489 (since SNK used an ehanced clone of it in the NeoGeo Pocket). But I guess it made more sense for Yamaha to use their own SSG silicon.
What xeron said. ;-)
platform thumb
Neo Geo ! <3 \o/ Also indeed. LONGER VIDEO...
On which MVS cartridge board(s) do I have to burn the roms to run it on the real hw ?
On which MVS cartridge board(s) do I have to burn the roms to run it on the real hw ?
Great !
@franky - Puzzle De Pon.
Leonard still doing demos in 2012... <3
cubes on everything!
:)
hellooo
niiice!
greaaat one!!!! Neo Geo! ST-alike ....
Awsome.
Moooore Neo Geo!
please ask pouet staff to add "neogeo" platform, so it can be the "first" neogeo demo :)
Rulez!
Soso, it needs more scenes. :P
Nice hack!
It's a good proof of concept :). Now bring on the epic multi-part stuff ;D.
:)
Pro-gear spec!
very cool. Is the cube a frame based animation using tiles mode or real 3D rotation then mapped to best fit 3 color tile? I would like to implement this same technique for another tiles-mode only platform. Any tips?
Awesome trick !!
Good stuff Leonard, glad to see you're still active with interesting code challenges.
This is mega cool! , and happy to see Leonard active again!
Nice job!
:)
Rulez !
nice
wohoo!
Clever first prod for the Neogeo!
Great work !
Atariii! :)
OMG.
Animation but still nice to see some Neogeo-demos!
LeoGeo... I'd call it!
yes
this rocks! i did a slightly improved capture a while back: https://www.youtube.com/watch?v=3Hkv4fKAroo
NeoGeo
Nice one!
Yeah.
Gg
Impossible vector!
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if this prod is a fake, some info is false or the download link is broken,
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This is the first NEO-GEO demo by Oxygene!
Note: This demo runs on real hardware: MVS cartridge or NeoGeo CD
(Thanks to Furrtek for testing it on real hardware)
This package contains both ISO file for NeoGeoCD version, and
classic ROM files to run on emulator or flash on real hardware.
Leonard / OXYGENE