64DD Zelda stuff

4D50

Disk 0x785C8 (LBA25)

LBA 25: 1DC000-1E0D17 (Size: 0x4D18)


Copy
1DD060-1DD177 (Offset 0x1060 of LBA 25)
to
1D9C30-1D9D47 (Size: 0x118)

Var0x0 - Var0x4
Var0x8 - Var0xC

801C6F30 - Copy 64DD LBA Block?
Args:
A0 = Destination
S0/A1 = Offset
S1/A2 = Size

801C7E80 - Read whatever 64DD stuff?
A2 = Var0x0 - Var0x4
T1 = Var0x0 + A2
T0 = Var0x8 - Var0xC

SP 8011F0C8
$SP + 0x20 = T0
$SP + 0x18 = T1
$SP + 0x24 = A2

Data:
-LBA 25 Offset 0x1060- Memory Patch
0x0 - Source Start (Base Offset 0x1DC000)
0x4 - Source End
0x8 - Destination Start (Memory Address)
0xC - Destination End (Memory Address)
0x10 - Pointer to Pointer to routine


800FB4E0 - VROM Replacement Disk (part of "code" file)
9 entries by default (thx Zoinkity)

0x0 - VROM1 Start
0x4 - VROM1 End
0x8 - VROM2 Start
0xC - VROM2 End
0x10 - unknown
0x11 - unknown
0x12 - >0 = load from disk
0x13 - written, 0 = loaded from cart, 1 = loaded from disk

80121220 - Pointer to Disk function pointers (Zoinkity)
 +0	in 800AD4C0
 	after calling, sets 80121220 = p->table of these function pointers
 +4	in 800AD51C
 	if 64dd hooked, call this function and set detection byte to 0
 +C	???; called later in 8009CEEC
 +10	???; called in 8009A750, near start
 +14	???; called at end of 8009A5C0
 +18	???; called at start of 8006C340
 	accepts: A0=[8011BF10, which is p->800F72D8]
 +1C	???; called in 8006C2CC, second, before setting 8011BF10 = 0
 	accepts: A0=[8011BF10]
 +20	???; called at end of 8006C340
 +24	???; called in 8006C2CC, first
 +28	at 8006C0D0; replacement for 0x976000 (map_i_static)
 	accepts: A0, ???
 +2C	???; called at end of 80066DF0
 +30	???; called in 80066EC0 with A0 = 8011BF00 before setting 8011BF00 = 0
 	accepts: A0=[8011BF00]
 +3C	???; called at end of 8005BACC
 +40	???; sole purpose of 8005BC44
 +44
 +48	in 8009CEEC
 	V0 = p->entry replacing entry A0 in table A1
 	accepts: A0=index, A1=p->table [800FB4E0]
 	incoming entries are 0x14 long; if entry[12] > 0, appears to replace
 +54	???; called in 8009A750, and if V0 skips calling 80056C70(S1)
 	accepts: A0
 +58	???; called in 800E162C
 	accepts: A0=[80112E34 = 8010A94C], A1=[80112E38 = 8010EA8C], A2=[80112E3C = 80112CAC]
 +60	called in 800DC838; if V0, replaces cart load from 0x966000 (staff_message_data_static)
 	accepts: A0, ???
 +64	called in 800DC838; if V0, replaces cart load from 0x8EB000 (jpn_message_data_static)
 	accepts: A0, ???
 +68	called in 800DC838; if V0, replaces cart load from 0x92D000 (nes_message_data_static)
 	accepts: A0, ???
 +6C	???; called in 80082790
 	accepts: A0, A1=[800FBD18, a table of function pointers]
 +70	???; called in 80000D28
 	accepts: A0=, A1, A2, A3, SP+10, SP+14, SP+18
 +74	???; called in 800A0BD0
 	accepts: A0
 +78	V0 = p->data in bank+offset A1 in table A2
 	accepts: A0=p->struct, A1=entry, A2=p->table [800EFE14]