Zelda Disk Code

//Zelda Expansion Disk
//By LuigiBlood

arch n64.cpu
endian msb
output "EZLJ_new.ndd", create

include "N64_CPUREGS.asm"

macro seek(n) {
  origin {n}
}

//FILL
seek(0x0)
fill 0x3DEC800

//System Area
seek(0x0)
//System Data
define x(0)
while {x} < 14 {
  define y(0)
  while {y} < 86 { //232 * 85

    dw 0xE848D316	//Disk Region
    db 0x10
    db 0x11		//Disk Type
    dh 0x0001		//Boot Blocks Load
    db 0x0C, 0x18, 0x24, 0x30, 0x3C, 0x48, 0x54, 0x60, 0x6C, 0x78, 0x84, 0x90, 0x9C, 0xA8, 0xB4, 0xC0
    dw 0xFFFFFFFF
    dw 0x80000400
    db 0x10, 0x16, 0x1C, 0x22, 0x28, 0x2E, 0x34, 0x36, 0x37, 0x40, 0x46, 0x4C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x73
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x92
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x6F
    db 0x56, 0x5C, 0x62, 0x68, 0x6E, 0x74, 0x7A, 0x7F, 0x86, 0x8C, 0x92, 0x98
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x88
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x69
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x93
    db 0x04, 0x0C, 0x14, 0x1C, 0x24, 0x2C, 0x34, 0x3C, 0x44, 0x4C, 0x54, 0x5C
    dh 0x061E, 0x07AE, 0x10C3, 0xFFFF

    evaluate y({y} + 1)
  }
  evaluate x({x} + 1)
}

//Disk ID
define x(14)
while {x} < 24 {
  define y(0)
  while {y} < 86 { //232 * 85

    db "EZLJ"	//Game ID code
    db 0	//Version 0
    db 0	//Disk Number 0
    db 0	//Does not use MFS
    db 0	//Disk Use
    db "URAZELDA"
    db "ITISREAL"
    db "01"
    db "WOAHHH"

    fill 200

    evaluate y({y} + 1)
  }
  evaluate x({x} + 1)
}

//LBA 25
seek(0x785C8)

constant DDHOOK_RAM(0x80410000)
constant DDHOOK_GPRAM(0x80400000)
constant DDHOOK_NESTEST(0x80440000)

base DDHOOK_RAM

ddhook_start:
db "URAZELDA"
ddhook_list_start:
dw (ddhook_setup)	//00: 64DD Hook
dw 0x00000000		//04: 64DD Unhook
dw 0x00000000		//08: Room Loading
dw 0x00000000		//0C: Scene Loading (???)
dw 0x00000000		//10:
dw 0x00000000		//14:
dw 0x00000000		//18:
dw 0x00000000		//1C:
dw 0x00000000		//20:
dw 0x00000000		//24:
dw 0x00000000		//28:
dw 0x00000000		//2C:
dw 0x00000000		//30:
dw 0x00000000		//34:
dw 0x00000000		//38:
dw 0x00000000		//3C:
dw 0x00000000		//40:
dw 0x00000000		//44:
dw (ddhook_scenedetect_real)		//48: Scene Entry Replacement
dw 0x00000000		//4C:
dw 0x00000000		//50:
dw 0x00000000		//54:
dw (ddhook_text_table)	//58: Message Table Replacement
dw 0x00000000		//5C:
dw 0x00000000		//60:
dw 0x00000000		//64:
dw (ddhook_textUSload)	//68: US Text Data Loading
dw 0x00000000		//6C:
dw 0x00000000		//70:
dw 0x00000000		//74:
dw 0x00000000		//78:
ddhook_list_end:

ddhook_setup:
	//A0=p->p->n64dd_Func_801C7C1C (USEFUL!)
	//800FEE70 - Offset Table
	//	+0x0 = 801C7C1C
	//	+0x50 = osSendMesg
	//	+0x88 = Save Context
	//8011A5D0 - Save Context
	//	+0x1409 = Language (8011B9D9)

	addiu sp,sp,-0x10
	sw ra,4(sp)

	//Change language to English
	lw a1,0x88(a0)
	addiu a1,a1,0x1409
	ori a2,0,1
	sb a2,0(a1)

	//save pointer to 801C7C1C
	li a3,(DDHOOK_GPRAM)
	lw a2,0x50(a0)
	sw a2,4(a3)
	lw a0,0(a0)
	sw a0,0(a3)

	or a3,0,a0

	//load text data into RAM (avoid music stop)
	li a1,0x00966000	//A1=00966000 (Offset)
	li a2,0x00039000	//A2=00039000 (Size)
	li a0,DDHOOK_NESTEST	//A0=DDHOOK_NESTEST (Dest)
	jalr a3			//read from disk
	nop

	lw ra,4(sp)
	addiu sp,sp,0x10
	jr ra
	nop

ddhook_textUSload:
	//A0=p->Text Heap
	//	+0 = Offset
	//	+4 = Size
	//	+DC88 = Destination
	addiu sp,sp,-0x10
	sw ra,4(sp)

	lw a2,4(a0) 		//A2 = Size
	lw a1,0(a0)		//A1 = Offset
	li a3,DDHOOK_NESTEST	//A3 = DDHOOK_NESTEST
	addu a1,a1,a3		//A1 = A3 + Offset
	ori a3,0,0xDC88
	addu a0,a0,a3		//A0 = RAM Dest
ddhook_textUSloop:
	lb a3,0(a1)
	sb a3,0(a0)
	addiu a0,a0,1
	addiu a1,a1,1
	subi a2,a2,1
	bnez a2,ddhook_textUSloop

	lw ra,4(sp)
	addiu sp,sp,0x10
	jr ra
	nop

constant DDHOOK_MESSAGETABLENES(0x80420000)
ddhook_text_table:
	//A0=p->p->jpn_message_data_static table
	//A1=p->p->nes_message_data_static table
	//A2=p->p->staff_message_data_static table
	//You can change the pointers.
	addiu sp,sp,-0x10
	sw ra,4(sp)

	li a0,DDHOOK_MESSAGETABLENES
	sw a0,0(a1)		//Change pointer
	li a1,0x00008004	//A1=Source
	li a2,0x421C		//A2=Size

	li a3,(DDHOOK_GPRAM)
	lw a3,0(a3)
	jalr a3			//read from disk
	nop

	lw ra,4(sp)
	addiu sp,sp,0x10
	jr ra
	nop

ddhook_scenedetect_real:
	//A0=Scene ID
	//A1=p->Scene Table
	addiu sp,sp,-0x10
	addiu a3,0,0x14
	multu a0,a3
	mflo a0
	addu v0,a0,a1
	bnez a0,ddhook_scenedetect_real_notdeku
	li a0,ddhook_list_start
	li a1,ddhook_roomload
	sw a1,8(a0)
	b ddhook_scenedetect_real_return
	nop
ddhook_scenedetect_real_notdeku:
	sw 0,8(a0)

ddhook_scenedetect_real_return:
	addiu sp,sp,0x10
	jr ra
	nop

ddhook_roomload:
	//A0=p->Global Context
	//A1=p->Room Context
	//A2=Room ID

	addiu sp,sp,-0x10
	sw ra,4(sp)
	sw a1,8(sp)

	lw a0,0x0134(a1)	//load Room List Pointer
	sll a3,a2,3		//Room ID * 8
	addu a2,a0,a3		//calculate offset from Room ID
	lw a0,0x34(a1)		//A0=RAM Address
	lw a3,0x8(a2)		//RoomEnd
	lw a1,0x0(a2)		//RoomStart (A1=VROM Address)
	subu a2,a3,a1		//A2=Size

	lw a3,8(sp)
	sw a1,0x38(a3)		//Store VROM Address
	sw a0,0x3C(a3)		//Store RAM Address
	sw a2,0x40(a3)		//Store Size

	li a3,(DDHOOK_GPRAM)
	lw a3,0(a3)
	jalr a3			//read from disk
	nop

	//VERY HACKY MAP LOADING UNSTABLE
	lw a1,8(sp)
	addiu a0,0,1
	sw a0,0x60(a1)

	//lw a0,8(sp)
	//addiu a0,a0,0x58
	//li a1,1
	//li a2,0

	//li a3,(DDHOOK_GPRAM)
	//lw a3,4(a3)
	//jalr a3	//osSendMesg
	//nop

	lw ra,4(sp)
	addiu sp,sp,0x10
	jr ra
	nop

ddhook_end:

seek(0x79628)
dw (ddhook_start - ddhook_start)	//Source Start
dw (ddhook_end - ddhook_start)		//Source End
dw (ddhook_start)			//Dest Start
dw (ddhook_end)				//Dest End
dw (ddhook_list_start)

seek(0x785C8 + 0x8000)
insert "ezlj_nes_message_table.bin"

seek(0x785C8 + 0x00966000)
insert "ezlj_nes_message_data_static.bin"

//parody message shit
seek(0x9ED325)
db 0x57, 0x6F, 0x77, 0x21, 0x20, 0x41, 0x20, 0x36, 0x34, 0x44, 0x44, 0x21, 0x21, 0x21, 0x04, 0x1A, 0x49, 0x74, 0x27, 0x73, 0x20, 0x61, 0x62, 0x6F, 0x75, 0x74, 0x20, 0x74, 0x69, 0x6D, 0x65, 0x20, 0x79, 0x6F, 0x75, 0x20, 0x75, 0x73, 0x65, 0x64, 0x20, 0x6F, 0x6E, 0x65

seek(0x9ED39E)
db 0x4C, 0x65, 0x74, 0x20, 0x6D, 0x65, 0x20, 0x68, 0x75, 0x6D, 0x70, 0x20, 0x6D, 0x79, 0x20, 0x72, 0x6F, 0x63, 0x6B, 0x20, 0x69, 0x6E, 0x20, 0x70, 0x65, 0x61, 0x63, 0x65, 0x21, 0x01, 0x53, 0x65, 0x72, 0x69, 0x6F, 0x75, 0x73, 0x6C, 0x79, 0x2C, 0x20, 0x6C, 0x6F, 0x73, 0x65, 0x72, 0x2C, 0x20, 0x79, 0x6F, 0x75, 0x27, 0x72, 0x65, 0x20, 0x72, 0x75, 0x69, 0x6E, 0x69, 0x6E, 0x67, 0x20, 0x69, 0x74, 0x21, 0x02


seek(0x785C8 + 0x02499000)
//insert "ezlj_ydan_all_ntsc1.0.bin"
insert "ezlj_ydan_scene_palmq.bin"

seek(0x785C8 + 0x01F61000)
insert "ezlj_ydan_rooms_palmq.bin"