From b65cc6d97dc8594894ae073c9cb3c07530c0dfe3 Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Sun, 9 Apr 2017 14:39:35 -0700
Subject: [PATCH] DS: Set boot complete bit in RAM on boot (fixes #576, #580,
 #586)

---
 CHANGES     | 4 ++++
 src/ds/ds.c | 1 +
 2 files changed, 5 insertions(+)

diff --git a/CHANGES b/CHANGES
index 8417b570e..5ae19f740 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+medusa alpha 2: (Future)
+Misc:
+ - DS: Set boot complete bit in RAM on boot (fixes mgba.io/i/576, mgba.io/i/580, mgba.io/i/586)
+
 0.6.0: (Future)
 Features:
  - GBA: Support printing debug strings from inside a game
diff --git a/src/ds/ds.c b/src/ds/ds.c
index 1c5f856b2..9948829c7 100644
--- a/src/ds/ds.c
+++ b/src/ds/ds.c
@@ -301,6 +301,7 @@ void DS7Reset(struct ARMCore* cpu) {
 		memcpy(&ds->memory.ram[0x3FF804 >> 2], DS_CHIP_ID, 4);
 		memcpy(&ds->memory.ram[0x3FFC00 >> 2], DS_CHIP_ID, 4);
 		memcpy(&ds->memory.ram[0x3FFC04 >> 2], DS_CHIP_ID, 4);
+		ds->memory.ram[0x3FFC40 >> 2] = 1;
 		memcpy(&ds->memory.ram[0x3FFE00 >> 2], header, 0x170);
 		DS7IOWrite32(ds, DS_REG_ROMCNT_LO, header->busTiming | 0x2700000);
 		// TODO: Error check