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Discussion Starter #1
1)
cdvdPeops fails to boot DVD directly, ELF must be loaded manually.
CDVDbin works fine.

2)
Intros use heavily IPU.
PCSX2 fails to test IPU_CTRL in "sceIpuSync".

3)
GSDX9 displays more stuff in software than in hardware mode.
(Foreground at language select screen).

4)
GSDX9 fails to test GS_CSR at some point.

Code:
paddub	a1, zero, zero		# 0012f078:70002e28	
lw	v0, $9314(gp)		# 0012f07c:8f829314	v0=$d2b19314
beq	v0, zero, $0012f09c	# 0012f080:10400006	v __0012f09c
lui	at, $1200		# 0012f084:3c011200	at=GS_PMODE
lw	v0, $407c(s0)		# 0012f088:8e02407c	
xori	v0, v0, $0001		# 0012f08c:38420001	
beq	zero, zero, $0012f0b8	# 0012f090:10000009	v __0012f0b8
sw	v0, $407c(s0)		# 0012f094:ae02407c	
lui	at, $1200		# 0012f098:3c011200	at=GS_PMODE
__0012f09c:					# 
ld	v0, $1000(at)		# 0012f09c:dc221000	v0=GS_CSR
dsrl	v0, v0, 13		# 0012f0a0:0002137a	
andi	v0, v0, $0001		# 0012f0a4:30420001	
dsll32	v0, v0, 0		# 0012f0a8:0002103c	
dsra32	v0, v0, 0		# 0012f0ac:0002103f	
sw	v0, $407c(s0)		# 0012f0b0:ae02407c	
nop				# 0012f0b4:00000000	
__0012f0b8:					# 
lui	at, $1200		# 0012f0b8:3c011200	at=GS_PMODE
ld	v0, $1000(at)		# 0012f0bc:dc221000	v0=GS_CSR
dsrl	v0, v0, 3		# 0012f0c0:000210fa	
andi	v0, v0, $0001		# 0012f0c4:30420001	<- here it loops
nop				# 0012f0c8:00000000	
beq	v0, zero, $0012f0b8	# 0012f0cc:1040fffa	^ __0012f0b8
nop				# 0012f0d0:00000000	
beq	zero, zero, $0012ed98	# 0012f0d4:1000ff30	^ __0012ed98
lui	at, $1200		# 0012f0d8:3c011200	at=GS_PMODE
nop				# 0012f0dc:00000000
5)
Game goes into actual 3D gameplay, but only the bottom pixel row is displayed whilst the rest is blanked. Game slows down below 1 FPS.

Code:
48258BE5.pnach

gametitle= Onimusha: Warlords PAL
comment=load ELF manually with CDVDPEOPS
//Skip Videos (sceMpegIsEnd)
patch=0,EE,00109788,word,24020001
//brute force fix "sceIpuSync / IPU_CTRL"
patch=0,EE,0010ae84,word,00000000
//brute force fix "GS_CSR" for GSDX9
patch=0,EE,0012f080,word,00000000
 
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