Sonic and Sega Retro Message Board: Erik JS - Viewing Profile - Sonic and Sega Retro Message Board

Yeah, I remember that, you showed me some screens some time ago over MSN. I'll play this for sure!

So how's the actual progress? And since I know shit about Mario hacking, what are you exactly able to do with SMW (new musics, whatever)?

Something interesting at 3F0000.

I googled for PSY-Q with several combinations of words (Sega, program, Genesis), and finally found this.

With further googling, the supposed tool used for compilation of a PSY-Q assembly or whatever can be found here (very bottom of the page, link seems to be broken, unfortunatelly).

Heh, I was trying to accomplish what you're doing, ThunderSpeed, and I began with object layout. I replaced the whole offset index loading, as they have the fucking FFFF limit for all data, with 32-bit pointers. Below is the code I used (code from S1 june'05):

OPL_Main:			; XREF: OPL_Index
		addq.b	#2,($FFFFF76C).w
;		move.w	($FFFFFE10).w,d0
;		lsl.b	#6,d0
;		lsr.w	#4,d0
;		lea	(ObjPos_Index).l,a0
;		movea.l	a0,a1
;		adda.w	(a0,d0.w),a0
;--- object layout work begin / reference: http://www.ticalc.org/pub/text/68k/68kguide.txt
		clr.w	d0
		move.b	($FFFFFE10).w,d0
		mulu.w #32,d0
		move.w	d0,($FFFFFF00).w
		clr.w	d0
		move.b	($FFFFFE11).w,d0
		mulu.w	#8,d0
		add.w	($FFFFFF00).w,d0
		move.l	(ObjLayoutPointersMAIN).l,a0
		movea.l	0(a0,d0.w),a0
;--- object layout work end

Then, at EOF, I put this:

ObjLayoutPointersMAIN:
		dc.l	ObjLayoutPointers
ObjLayoutPointers:	dc.l ObjPos_GHZ1, ObjPos_Null
		dc.l ObjPos_GHZ2, ObjPos_Null
		dc.l ObjPos_GHZ3, ObjPos_Null
		dc.l ObjPos_GHZ1, ObjPos_Null
		dc.l ObjPos_LZ1, ObjPos_Null
		dc.l ObjPos_LZ2, ObjPos_Null
		dc.l ObjPos_LZ3, ObjPos_Null
		dc.l ObjPos_SBZ3, ObjPos_Null
		dc.l ObjPos_MZ1, ObjPos_Null
		dc.l ObjPos_MZ2, ObjPos_Null
		dc.l ObjPos_MZ3, ObjPos_Null
		dc.l ObjPos_MZ1, ObjPos_Null
		dc.l ObjPos_SLZ1, ObjPos_Null
		dc.l ObjPos_SLZ2, ObjPos_Null
		dc.l ObjPos_SLZ3, ObjPos_Null
		dc.l ObjPos_SLZ1, ObjPos_Null
		dc.l ObjPos_SYZ1, ObjPos_Null
		dc.l ObjPos_SYZ2, ObjPos_Null
		dc.l ObjPos_SYZ3, ObjPos_Null
		dc.l ObjPos_SYZ1, ObjPos_Null
		dc.l ObjPos_SBZ1, ObjPos_Null
		dc.l ObjPos_SBZ2, ObjPos_Null
		dc.l ObjPos_FZ, ObjPos_Null
		dc.l ObjPos_SBZ1, ObjPos_Null
		dc.l ObjPos_End, ObjPos_Null
		dc.l ObjPos_End, ObjPos_Null
		dc.l ObjPos_End, ObjPos_Null
		dc.l ObjPos_End, ObjPos_Null
		dc.l ObjPos_LZ1pf1, ObjPos_LZ1pf2
		dc.l ObjPos_LZ2pf1, ObjPos_LZ2pf2
		dc.l ObjPos_LZ3pf1, ObjPos_LZ3pf2
		dc.l ObjPos_LZ1pf1, ObjPos_LZ1pf2
		dc.l ObjPos_SBZ1pf1, ObjPos_SBZ1pf2
		dc.l ObjPos_SBZ1pf3, ObjPos_SBZ1pf4
		dc.l ObjPos_SBZ1pf5, ObjPos_SBZ1pf6
		dc.l ObjPos_SBZ1pf1, ObjPos_SBZ1pf2
		dc.b $FF, $FF, 0, 0, 0,	0

Aside from OPL_Main, ObjPos_Index is referenced at two more places, but I hadn't messed with them yet. I'll check out other sections later.

Note: just for the record, I checked out Sonic 3's code first. This is how it looks like:

ROM:00019D24 loc_0_19D24:						   ; CODE XREF: ROM:00019D12j
ROM:00019D24				 move.w  ($FFFFFE10).w,d0
ROM:00019D28				 ror.b   #1,d0
ROM:00019D2A				 lsr.w   #5,d0
ROM:00019D2C				 lea	 (unk_0_5E0D8).l,a0
ROM:00019D32				 movea.l (a0,d0.w),a0

ddrmaxromance, on Sep 2 2006, 12:14 AM, said:

And I recommend uploading your screenshots to wherever the hell as long as they aren't BMP.

Yeah, I've done it too. Two years ago, I'm sure. :P

Someone should gather all info about changing S2 level select into one topic. You know, you're supposed to change ASM in order to make your new entry to be highlighted and such.