From f964dfaa5e36d37196d67910c83b9477d9dab6a0 Mon Sep 17 00:00:00 2001
From: Ty Lamontagne <amfobes@gmail.com>
Date: Thu, 12 Dec 2024 14:38:06 -0500
Subject: [PATCH] IOPBios: Defer to iopMemSafeWriteBytes when HLEing reads

---
 pcsx2/IopBios.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/pcsx2/IopBios.cpp b/pcsx2/IopBios.cpp
index 2c8617cb7f..843f2a0275 100644
--- a/pcsx2/IopBios.cpp
+++ b/pcsx2/IopBios.cpp
@@ -852,8 +852,16 @@ namespace R3000A
 
 				v0 = file->read(buf.get(), count);
 
-				for (s32 i = 0; i < (s32)v0; i++)
-					iopMemWrite8(data + i, buf[i]);
+				[[likely]]
+				if (v0 >= 0 && iopMemSafeWriteBytes(data, buf.get(), v0))
+				{
+					psxCpu->Clear(data, (v0 + 3) / 4);
+				}
+				else
+				{
+					for (s32 i = 0; i < static_cast<s32>(v0); i++)
+						iopMemWrite8(data + i, buf[i]);
+				}
 
 				pc = ra;
 				return 1;