From 03817e5293cff053edbdace6deedd4be9ff8165e Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Fri, 17 Feb 2017 11:58:30 -0800
Subject: [PATCH] DS I/O: Stub disable register 20A

---
 src/ds/io.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ds/io.c b/src/ds/io.c
index 8b9d895a7..d3c08e11b 100644
--- a/src/ds/io.c
+++ b/src/ds/io.c
@@ -88,6 +88,9 @@ static uint32_t DSIOWrite(struct DSCommon* dscore, uint32_t address, uint16_t va
 	case DS_REG_IME:
 		DSWriteIME(dscore->cpu, dscore->memory.io, value);
 		break;
+	case 0x20A:
+		// Some bad interrupt libraries will write to this
+		break;
 	case DS_REG_IF_LO:
 	case DS_REG_IF_HI:
 		value = dscore->memory.io[address >> 1] & ~value;