Neo Geo AES to Neo Geo CD Project

ethoscapade · Post by **ethoscapade** » Fri Feb 25, 2005 9:14 am

oh my gosh! shock troopers! that hadn't occured to me! i think it'd fit, too!

Salamander2 · Post by **Salamander2** » Sat Feb 26, 2005 7:59 pm

ZED BLADE,
MONEY IDOL(PUZZLE) EXCHANGER,
BATTLE FLIP SHOT,
SHOCK TROOPERS,

it?s all about goodness.

i could dream with BLAZING STAR...never mind.
someone here could help me to upgrade my dreamcast main memory to support blazing star??

Salamander2 · Post by **Salamander2** » Sat Feb 26, 2005 8:45 pm

damn...
the neogeocd specs differs from the AES/MVS hardware...
64kb for z80 in ngcd(128kb in MVS).

i think most titles will never get the light of a day.

LyingWake · Post by **LyingWake** » Sun Feb 27, 2005 12:42 am

Is it technially possible to hack the emulator to support what Salamander2 was saying, how the cardtridge NeoGeo has 128kb? Don't know what he's referring to.

Salamander2 · Post by **Salamander2** » Sun Feb 27, 2005 8:06 pm

someone please test these games mentioned by me.
if they work in the dreamcast, PLEASE REPORT IT TO ME!

racketboy · Post by **racketboy** » Mon Feb 28, 2005 12:00 am

will wonders never cease?

ethoscapade · Post by **ethoscapade** » Thu Mar 03, 2005 3:51 pm

i don't believe the conversion utility (if such a thing exists) is widely available, because this is actually a difficult process. could be wrong though..

and shock troopers is only a couple of megs off from blazing star, so if we can't get one, we're not likely to have the other.. shame, because those are a couple of the most-missed neo games.

iq_132 · Post by **iq_132** » Sun Mar 06, 2005 4:25 am

It's actually not that hard to hack aes->ngcd
I slapped together a program to convert Pochi and Nyaa automatically.

The only real issue is that you have to keep rom sizes down because of the NeoCD's ram limitations.

racketboy · Post by **racketboy** » Mon Mar 07, 2005 9:25 pm

can you detail this process that is "not that hard"?

DARKGATE · Post by **DARKGATE** » Tue Mar 08, 2005 8:47 am

i don't undestand, we can play to SAVAGE REIGN 2, PULSTAR, MATRIMELEE on emu neogeo cd? O_o more details please.

Julius · Post by **Julius** » Tue Mar 08, 2005 8:55 am

DARKGATE wrote:PULSTAR

Pulstar is available as a normal NeoGeo CD version, and runs quite well.

xenon · Post by **xenon** » Tue Mar 08, 2005 10:04 am

Yes, I have Pulstar for NEOGEO CD, and for example it runs very good in NEOCD or NEO4ALL

Yours,

iq_132 · Post by **iq_132** » Thu Mar 10, 2005 9:16 pm

racketboy wrote:can you detail this process that is "not that hard"?

Well, it helps if you have an understanding of using a hex editor and a bit of coding knowledge.

You have to byteswap the Program data (the AES handles it as: byte 2, byte 1, byte 4, byte 3, etc
Then you have to swap two pairs of bytes at 0x64 and 0x6A (I think, I may not remember this correctly)
This must be at or under 2mb

Next, you have to split the m1 rom into a 64k chunk (max neocd can handle at one time)

Next is the hardest part, the graphics data. You have to load a few bytes from the C1 and then the C2 to make the first gfx rom in a ngcd. It seems a bit scrambled at first, but if you check it out in a hex editor, it is much easier to deal with
You must make sure that the graphics data is at or under 4mb

then the text data -- usually it's under 128, so you just have to rename it
then the samples -- this must be at or under 2mb

Shinto · Post by **Shinto** » Mon Mar 14, 2005 8:32 am

I hope this project works out well.

racketboy · Post by **racketboy** » Tue Mar 15, 2005 7:18 am

So are there still conversions going on?

Juan · Post by **Juan** » Mon May 16, 2005 1:30 am

I remembered this discussion when I saw this:
http://neosource.1emulation.com/forums/ ... opic=371.0
Maybe It'll be useful, maybe it'll be considered warez. In either case, you deal with it

mikozero · Post by **mikozero** » Mon May 16, 2005 8:02 am

Salamander2 wrote:damn...
the neogeocd specs differs from the AES/MVS hardware...
64kb for z80 in ngcd(128kb in MVS).

i think most titles will never get the light of a day.

some titles don't use all that, and can be "trimmed"...
the 128kb is a physical rom size, not nesseseraly a data size.

for instance the correct size for mslug 3 is 512kb, but you can cut it down to 128 afaik all sounds are still present and correct (some M's are simply filled with duplicated data or junk) this and decrypted C's and P's are what get it to run on neoragex.

Post by **Christuserloeser** » Mon May 16, 2005 8:49 am

Wait you are not telling me that Metal Slug 3 can be converted to a NeoGeoCD-ROM and thus would work on a DC!?

mikozero · Post by **mikozero** » Mon May 16, 2005 12:15 pm

unfortunately, not as far as i know. still, it's just the beginning of this stuff really...

DaRKSLaiN · Post by **DaRKSLaiN** » Mon May 16, 2005 12:51 pm

my dream is seeing Snk Vs Capcom on Dreamcast... just dreaming..