From 42667020d83b9ae45c00f94fff919cc6663c7273 Mon Sep 17 00:00:00 2001
From: zeromus <zeromus@users.noreply.github.com>
Date: Tue, 27 Aug 2024 04:15:00 -0400
Subject: [PATCH] fix ensata emulation? (re: #184)

---
 desmume/src/MMU.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/desmume/src/MMU.cpp b/desmume/src/MMU.cpp
index bb0ba58d8..f8a7ed159 100644
--- a/desmume/src/MMU.cpp
+++ b/desmume/src/MMU.cpp
@@ -2468,7 +2468,16 @@ bool validateIORegsWrite(u32 addr, u8 size, u32 val)
 {
 	if (PROCNUM == ARMCPU_ARM9)
 	{
-		switch (addr & 0x0FFFFFFC)
+		u32 addrMasked = addr & 0x0FFFFFFC;
+
+		if(nds.ensataEmulation)
+		{
+			if(addrMasked == eng_3D_CLIPMTX_RESULT) return true;
+			if(addrMasked == 0x04FFF000) return true;
+			if(addrMasked == 0x04FFF010) return true;
+		}
+
+		switch (addrMasked)
 		{
 			// Display Engine A
 			case REG_DISPA_DISPCNT: