Sonic 3 sound driver in Sonic 1

Sonic 3 sound driver in Sonic 1


Following this tutorial will allow you to have the music, effects and samples of Sonic 3 in Sonic 1.


Required Files:


- Sonic 3 driver


Download


Part 1


1. Go to "SoundDriverLoad" and replace:




SoundDriverLoad: ; XREF: GameClrRAM; TitleScreen


nop


move.w #$100,($A11100).l; stop the Z80


move.w #$100,($A11200).l; reset the Z80


lea (Kos_Z80).l,a0; load sound driver


lea ($A00000).l,a1


bsr.w KosDec; decompress


move.w #0,($A11200).l


nop


nop


nop


nop


move.w #$100,($A11200).l; reset the Z80


move.w #0,($A11100).l; start the Z80


rts


; End of function SoundDriverLoad



To




SoundDriverLoad: ; XREF: GameClrRAM; TitleScreen


nop


jmp Sound_Driver


rts


; End of function SoundDriverLoad



2. Go to "PlaySound":




PlaySound:


move.b d0,($FFFFF00A).w


rts


; End of function PlaySound



And replace it with this..




PlaySound:


nop


jmp Play_Music_new


rts


; End of function PlaySound



3. Now find PlaySound_Special:




PlaySound_Special:


move.b d0,($FFFFF00B).w


rts


; End of function PlaySound_Special



Replace it with this:




PlaySound_Special:


nop


jmp Play_Sfx_new


rts


; End of function PlaySound_Special



4. Go to "pausegame":




PauseGame: ; XREF: Level_MainLoop; et al


nop


tst.b ($FFFFFE12).w; do you have any lives left?


beq.s Unpause ; if not, branch


tst.w ($FFFFF63A).w; is game already paused?


bne.s loc_13BE; if yes, branch


btst #7,($FFFFF605).w; is Start button pressed?


beq.s Pause_DoNothing; if not, branch


loc_13BE:


move.w #1,($FFFFF63A).w; freeze time


move.b #1,($FFFFF003).w; pause music


loc_13CA:


move.b #$10,($FFFFF62A).w


bsr.w DelayProgram


tst.b ($FFFFFFE1).w; is slow-motion cheat on?


beq.s Pause_ChkStart; if not, branch


btst #6,($FFFFF605).w; is button A pressed?


beq.s Pause_ChkBC; if not, branch


move.b #4,($FFFFF600).w; set game mode to 4 (title screen)


nop


bra.s loc_1404


; ===========================================================================


Pause_ChkBC: ; XREF: PauseGame


btst #4,($FFFFF604).w; is button B pressed?


bne.s Pause_SlowMo; if yes, branch


btst #5,($FFFFF605).w; is button C pressed?


bne.s Pause_SlowMo; if yes, branch


Pause_ChkStart: ; XREF: PauseGame


btst #7,($FFFFF605).w; is Start button pressed?


beq.s loc_13CA; if not, branch


loc_1404: ; XREF: PauseGame


move.b #$80,($FFFFF003).w


Unpause: ; XREF: PauseGame


move.w #0,($FFFFF63A).w; unpause the game


Pause_DoNothing: ; XREF: PauseGame


rts


; ===========================================================================


Pause_SlowMo: ; XREF: PauseGame


move.w #1,($FFFFF63A).w


move.b #$80,($FFFFF003).w


rts


; End of function PauseGame



Replace it with this




PauseGame: ; XREF: Level_MainLoop; et al


nop


jmp Pause_New


rts



5. Add this to the end of the ROM:




include 's3driver.asm'



Put the the driver that you downloaded with your disassembly.


6. Go to sub_71B4C:




sub_71B4C: ; XREF: loc_B10; PalToCRAM


move.w #$100,($A11100).l; stop the Z80


nop


nop


nop



Disable the function with a rts




sub_71B4C: ; XREF: loc_B10; PalToCRAM


rts



Part 2: Fixing the Playlist


1. Open in hex editor the file muslist1.bin

Code:

8182838485868D00

As you can see, it is in a simple format, showing the order as track 81, 82, 83, etc. Simply replace this with the music of your choice such as this:

Code:

0103130C070A etc.

Part 3: Fixing the sound effects


Coming soon.


Post your questions.


Total credits Esrael by the driver and for helping me to correct errors


[Edited by Qjimbo]

 

Where is the S3 Sound Driver? I can't find the downloadlink in your link!

 

Open your eyes.

 

1. There is no "s3driver.asm".

2. Where should I put the "include 's3driver.asm'"?



And:

Oh...

 

Open your eyes, again:

 

WHERE is this?

 

It's very down of the sonic1.asm file, where much files are included. (Sound, music, ...)

 

when you download, you will see a folder with the name of s_driver, there is what you are looking for

 

Sorry if this is a bump, but I was trying this out and was hoping for a little bit more information.


I managed to get up to:


5. Add this to the end of the ROM


and added

Code:

include 's3driver.asm'

BEFORE

Code:

; end of 'ROM'

EndOfRom:

Now this is where you have to explain it in a bit more detail...



Because, If followed word for word, your guide tells us to put ONLY the s3driver.asm file in the same folder as the Sonic1.asm, Build.bat etc...(if thats right?) then moves on to:



6. Go to sub_71B4C:

Code:

sub_71B4C:		&#59; XREF: loc_B10; PalToCRAM

		move.w	#$100,($A11100).l; stop the Z80

		nop	

		nop	

		nop

Disable the function with a rts

Code:

sub_71B4C:		&#59; XREF: loc_B10; PalToCRAM

		rts

and mentions nothing about the other files in the s_driver folder...


I can't see anything wrong with what I've done so-far. But any input from you at this stage would be very helpful.

 

Not bad. B)


It is working fine for me. Thanks!

 

When should we expect part 3?


I've just tested what you have, and it's like S1 on drugs =P


I'm getting random sound effects everywhere, which I guess part 3 shall cover. =P

 

Part 3, only to change the sound effects that play out of place, I am now preparing a code with it solved. pulp work. :downs:

 

Great, I look forward to it. =P

 

Probably off-topic, however to make matters easier you could use variables for the sound playing. Then you can just change the sound ID easily by changing a simple ID. For example:



audio $8C



Would become:



audio Music_Boss



And if you wanted to change the music:



Music_Boss = $8C ; change the $** to another music ID



Yes I used the SVN disassembly as an example, don't moan. D: This system would be easier to work with.

 

That's not too bad an Idea , SOTI. I may use your idea in the s3driver.asm, see how it works out, when this guide is finished ofcourse. =P

 

A lot of people like using macros and equates and such, but I always found that just putting the literal values in there as-is worked best for me. Maybe it's just because I'm accustomed to them, but it just feels more... well, comfortable.


Take that how you will, I guess.

 

Plus, putting the literal values usually mean less keypresses too. :v:

 

Me too. Equates? In my disasm? No thanks.

 

I was only saying that because it would be a quick solution if this driver was used. Other than that, the current setup is fine.

 

Actually, I did this for my hack. Mostly because I was going back and forth between Sonic 3, Sonic 2 and Sonic 1's sound driver to figure out wich one I liked. Sonic 3's has a lot of issues that annoyed me (fading wasn't working unless you were using voices from the Universal sound bank. Timing in Ports was wierd.) Although, I don't know how to fix such a thing with music. So I went back to the Sonic 2 sound driver, and edited it a little.