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Tutorial for New type of DVD check!

PS_2's profile picture
Published in 
Playstation 2 tutorials
 · 13 Aug 2018

TUTORIAL FOR NEW TYPE OF DVD CHECK!
(i.e. THUNDERHAWK PHOENIX)

 
000020F0 C8 8C 84 8F (DVD CHECK)
000020F0 01 00 04 24

original:
.text:001010EC loc_1010EC: # CODE XREF: sub_100F68+178j
.text:001010EC jal sceCdMmode
.text:001010F0 lw $a0, -0x7338($gp) < NOTE THIS
.text:001010F4 jal sub_1028A0
.text:001010F8 nop
.text:001010FC nop

patched:
.text:001010EC loc_1010EC: # CODE XREF: sub_100F68+178j
.text:001010EC jal sceCdMmode
.text:001010F0 li $a0, 1 < NOTE THIS
.text:001010F4 jal sub_1028A0
.text:001010F8 nop
.text:001010FC nop

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

00002134 C8 8C 84 8F (DVD CHECK)
00002134 01 00 04 24

original:
.text:0010112C daddu $a0, $0, $0
.text:00101130 jal sceCdMmode
.text:00101134 lw $a0, -0x7338($gp) < --- NOTE THIS
.text:00101138 jal sub_1028A0
.text:0010113C nop

patched:
.text:0010112C daddu $a0, $0, $0
.text:00101130 jal sceCdMmode
.text:00101134 li $a0, 1 < --- NOTE THIS
.text:00101138 jal sub_1028A0
.text:0010113C nop


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


00002160 C8 8C 84 8F (DVD CHECK)
00002160 01 00 04 24

original:
.text:00101158 daddu $a0, $0, $0
.text:0010115C jal sceCdMmode
.text:00101160 lw $a0, -0x7338($gp) < ---- NOTE THIS
.text:00101164 jal sub_1028A0
.text:00101168 nop

patched:
.text:00101158 daddu $a0, $0, $0
.text:0010115C jal sceCdMmode
.text:00101160 li $a0, 1 < ---- NOTE THIS
.text:00101164 jal sub_1028A0
.text:00101168 nop

Similar at:
0004fa28 C8 8C 84 8F (DVD CHECK)
0004fa28 01 00 04 24


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

00002438 FC 2C 05 0C (JUMP VIDEO LOGO)
00002438 00 00 00 00

original:
.text:00101434 la $a1, aCdrom0VideoLog # "cdrom0:\\VIDEO\\LOGO.PSS"
.text:00101438 jal sub_14B3F0 < ---- NOTE THIS!

patched:
.text:00101434 la $a1, aCdrom0VideoLog # "cdrom0:\\VIDEO\\LOGO.PSS"
.text:00101438 nop < ---- NOTE THIS!


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


00002470 FC 2C 05 0C (JUMP VIDEO INTRO)
00002470 00 00 00 00

original
.text:0010146C la $a1, aCdrom0VideoInt # "cdrom0:\\VIDEO\\INTROP.PSS"
.text:00101470 jal sub_14B3F0 < ----- NOTE THIS!!!!

patched:
.text:0010146C la $a1, aCdrom0VideoInt # "cdrom0:\\VIDEO\\INTROP.PSS"
.text:00101470 nop < ------ NOTE THIS!!!!!

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