From 80e381945ed2858b269a0fb35af9969e767ed5e4 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Mon, 27 Dec 2010 19:31:48 +0200
Subject: [PATCH] io asm: always write out to psxH, like C code does

---
 libpcsxcore/new_dynarec/linkage_arm.s | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/libpcsxcore/new_dynarec/linkage_arm.s b/libpcsxcore/new_dynarec/linkage_arm.s
index 8f1a2b2f..b5922ddb 100644
--- a/libpcsxcore/new_dynarec/linkage_arm.s
+++ b/libpcsxcore/new_dynarec/linkage_arm.s
@@ -1029,7 +1029,23 @@ ari_read_io32:
 .endm
 
 ari_write_io8:
-	ari_write_io ldrb, strb, byte, tab_write8, 2
+	@ PCSX always writes to psxH, so do we for consistency
+	ldr	r0, [fp, #address-dynarec_local]
+	ldr	r3, [fp, #psxH_ptr-dynarec_local]
+	ldrb	r1, [fp, #byte-dynarec_local]
+	bic	r2, r0, #0x1f800000
+	ldr	r12,[fp, #tab_write8-dynarec_local]
+	strb	r1, [r2, r3]
+	subs	r3, r2, #0x1000
+	movlo	pc, lr
+@	ari_write_io_old 2
+	cmp	r3, #0x880
+	movhs	pc, lr
+	ldr	r12,[r12, r3, lsl #2]
+	mov	r0, r1
+	tst	r12,r12
+	bxne	r12
+	mov	pc, lr
 
 ari_write_io16:
 	ari_write_io ldrh, strh, hword, tab_write16, 1
-- 
2.39.2