Faq how to convert MVS to NEOGEO CD games With url get 8 games

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Ian Micheal
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Faq how to convert MVS to NEOGEO CD games With url get 8 games

Post#1 » Fri Oct 25, 2019 2:06 am

MVS to CD Conversion How-To:
----------------------------

Here's a quick "How-To" to port Neo Geo MVS roms to a real Neo Geo CD system.

Iq_132 has made a quick step-by-step with tools to port MVS roms,
here's his details (taken from a page at the NeoSource Forum):

----------------------------------------------------------------------------

First, you must make sure that you are dealing with a very tiny neo-geo rom or
you will end up having to cut a lot of precious data out and will end up with
a glitchy game.

The "P" (M68K program) rom must be less than or equal to 2 Megabytes
The "S" (text) rom must be less than or equal to 128 Kilobytes
The "C" (sprites) rom(s) must be less than or equal to 4 Megabytes total
The "M" (Z80 program) rom must be less than or equal to 64 Kilobytes
The "V" (samples) rom(s) must be less than or equal to 1 Megabyte total

If the roms above are larger than this, you will have to remove and discard part
of the rom.

Now, onto the actual conversion:

M68K Program (P):

1. Byteswap the entire rom (swap byte 1 with byte 2, byte 3 with byte 4, etc..)
2. Swap two sets of bytes at address 0x66 and 0x6A of the program
3. Name your output prg.prg (Can be different)

Sprites (C):

1. Read two bytes from your C1
2. Byteswap the bytes from part 1
3. Read two bytes from your C2
4. Byteswap the bytes from part 3
5. Repeat steps 1-4 until your new rom is 4 Megabytes in size
A. Your output file may be smaller if your roms are tiny
6. Save the ouput file as spr.spr (Can be different)

Text (S):

1. Make sure your S1 rom is within the size-limit boundaries
2. Rename your S1 rom to fix.fix (Can be different)

Z80 Program (M):

1. Make sure your M rom is within the size-limit boundaries
2. Rename your M rom to z81.z80 (Can be different)

Samples (V):

1. You may only use one V rom, so if you have more than one, find a tool to
merge them
2. Make sure your (merged?) V rom is within the size-limit boundaries
3. Rename your V rom to pcm1.pcm (Can be different)


Lastly, you will need a few text files:

- IPL.TXT (This file is very important!)
- ABS.TXT
- BIB.TXT
- CPY.TXT

IPL.TXT is the most important, it tells the Neo-Geo machine which files to
load first, it usually contains something similar to this:

FIX.FIX,0,0
Z81.Z80,0,0
PCM1.PCM,0,0
SPR.SPR,0,0
PRG.PRG,0,0


----------------------------------------------------------------------------

After doing all that, you need to take the xxx.PRG file and open it up with
a HEX editor and change 14 bytes. I've checked the "conversion" of JoyJoyKid
of CDoty and found that he changed 14 bytes between 0x0042 to 0x0063, which is
part of the boot sequence (IRQ). I've compared it to the "L.PRG" file found in
"ADK World CD" and the changed bytes matches exacty except the 0x0063 which
CDoty replaced with the byte [E0] instead of byte [32]. The [E0] can be found
in any AES N0xxxx1A.038 ROM.

Here's the list of the bytes to change needed to boot on a real Neo Geo CD:

Adress: Original Byte: New Byte:
-------------------------------------------------------------
0x0042 04 05
0x0043 26 22
0x0046 04 05
0x0047 26 28
0x004A 04 05
0x004B 26 2E
0x004E 04 05
0x004F 26 34
0x0052 04 05
0x0053 26 3A
0x0057 26 F2
0x005B 26 EC
0x005F 26 E6
0x0063 (*) 32 E0
-------------------------------------------------------------

(*) = The 0x0063 can be changed to either [E0] which tells
the CPU that's the game is a AES version or with [32]
which tell the CPU that's is a MVS/CD version.

Now, with these changes, you will be able to boot any MVS-to-CD port.

----------------------------------------------------------------------------

About the JoyJoyKid porting of CDoty, here's all the details i've checked
with a Hex Editor and a "compare files" option after doing a port with
iq_132 tools:


CDoty version: MVS-to-CD port: Hex Compare:
----------------------------------------------------------------------------
021_S1.FIX 021_S1.BIN No difference!
----------------------------------------------------------------------------
021_M1.Z80 021_M1.BIN 336 additional bytes in the
021_M1.BIN (at the end)
----------------------------------------------------------------------------
021_P1.PRG 021_P1.PRG (onced 14 bytes differs. See above.
byteswapped with tool)
----------------------------------------------------------------------------
021_PCM.PCM 021_V1.BIN +
021_V2.BIN = No difference!
021_V01.BIN (merge the
the files with a hex
editor)
----------------------------------------------------------------------------
021_C1.SPR 021_C1.SPR (onced No difference!
byteswapped with tool)
----------------------------------------------------------------------------


Here's a list of port i've made which successely boots on a real Neo-Geo CD
game system (as of August 03, 2006):


Ports made by Sly DC:
-------------------------------------------
01) Andro Dunos (perfect!)
02) Puzzle de Pon [KaNeRyO port, fixed boot sequence] (perfect!)
03) Puzzle de Pon R (perfect!)
-------------------------------------------
04) Eight Man (Has a few sound issues)
05) King of the Monsters (has sounds issues)
06) Neo Mr. Do (Has a few sound issues)
07) Panic Bomber (has sounds issues)
08) Pop 'N' Bounce (Has a few sound issues)
-------------------------------------------
09) Blut Engel FRENCH (perfect!) [Translated for myself :) ]
10) Codename - Blut Engel BETA 050423 (perfect!)
11) Columns (perfect!)
12) Frog Feast (perfect!)
13) Poker Night (perfect!)
-------------------------------------------


I found this thought it was cool :) found the url for a lot of them just some wat back detective work lol

more info here https://neo-source.com/index.php?topic=554.0
Last edited by Ian Micheal on Fri Oct 25, 2019 1:46 pm, edited 3 times in total.
https://www.youtube.com/channel/UCeVCRA ... whHyKp6OsA my youtube channel of my projects running :)

https://discord.gg/ZHb4rCq discord for my projects :)

https://twitter.com/IanMicheal10 Reach me on twitter:)

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Ian Micheal
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Re: Faq how to convert MVS to NEOGEO CD games

Post#2 » Fri Oct 25, 2019 2:16 am

http://www.neogeocdworld.info/html/jeux ... sions.html with conversions to download


So far all are working on ngcdsdl1.2

8man.png

puzzledepon.png

king.png

I will be making sb of them all for you with videos when i get the chance
Last edited by Ian Micheal on Fri Oct 25, 2019 6:28 am, edited 1 time in total.
https://www.youtube.com/channel/UCeVCRA ... whHyKp6OsA my youtube channel of my projects running :)

https://discord.gg/ZHb4rCq discord for my projects :)

https://twitter.com/IanMicheal10 Reach me on twitter:)

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Ian Micheal
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Posts: 771
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Re: Faq how to convert MVS to NEOGEO CD games With url get them

Post#3 » Fri Oct 25, 2019 4:45 am

http://www.neogeocdworld.info/medias/iso/ to get all of them not listed on the page while you can :)
https://www.youtube.com/channel/UCeVCRA ... whHyKp6OsA my youtube channel of my projects running :)

https://discord.gg/ZHb4rCq discord for my projects :)

https://twitter.com/IanMicheal10 Reach me on twitter:)

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aldair
killer
Posts: 279

Re: Faq how to convert MVS to NEOGEO CD games With url get them

Post#4 » Fri Oct 25, 2019 7:48 am

Ian Micheal wrote:http://www.neogeocdworld.info/medias/iso/ to get all of them not listed on the page while you can :)

Can Neo Bomberman be converted?

Krootox1986
dark night
Posts: 55

Re: Faq how to convert MVS to NEOGEO CD games With url get 8 games

Post#5 » Fri Oct 25, 2019 1:16 pm

I picked up a ton of cd-r's ready for the SB dump :lol:

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Ian Micheal
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Posts: 771
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Re: Faq how to convert MVS to NEOGEO CD games With url get them

Post#6 » Fri Oct 25, 2019 2:46 pm

aldair wrote:
Ian Micheal wrote:http://www.neogeocdworld.info/medias/iso/ to get all of them not listed on the page while you can :)

Can Neo Bomberman be converted?



If it can fit into NGCD memory:
------------
PRG 2 Mb
FIX 128 Kb
SPR 4 Mb
PCM 1 Mb
Z80 64 Kb

Then yes we still need to find the tool
PROGCNV.exe tool, the programmer nick is "iq_132" and
https://neo-source.com/index.php?topic=554.0 he made it on that forum we might be able to.. they run very well so far no cd music but if the game had music and sfx it does monsters works very well

Bomberman puzzle works good
bomber puzzle.png


Remerber this is converting mvs to run on a real neogeo CD console not aes emulator or mvs emulator.. these should run on any neogeo cd emulator or real console..
https://www.youtube.com/channel/UCeVCRA ... whHyKp6OsA my youtube channel of my projects running :)

https://discord.gg/ZHb4rCq discord for my projects :)

https://twitter.com/IanMicheal10 Reach me on twitter:)

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