From 9b1f3c3c732d31bedcaf9fc82d286da857f07511 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Fri, 19 Apr 2013 00:04:50 -0700
Subject: [PATCH] Init GBA I/O registers

---
 src/gba/gba-io.c | 4 ++++
 src/gba/gba-io.h | 1 +
 src/gba/gba.c    | 2 ++
 3 files changed, 7 insertions(+)

diff --git a/src/gba/gba-io.c b/src/gba/gba-io.c
index a0f6f1cce..c205a3b4a 100644
--- a/src/gba/gba-io.c
+++ b/src/gba/gba-io.c
@@ -2,6 +2,10 @@
 
 #include "gba-video.h"
 
+void GBAIOInit(struct GBA* gba) {
+	gba->memory.io[REG_KEYINPUT >> 1] = 0x3FF;
+}
+
 void GBAIOWrite(struct GBA* gba, uint32_t address, uint16_t value) {
 	switch (address) {
 	case REG_DISPSTAT:
diff --git a/src/gba/gba-io.h b/src/gba/gba-io.h
index 4712d32f4..d0ff592b9 100644
--- a/src/gba/gba-io.h
+++ b/src/gba/gba-io.h
@@ -141,6 +141,7 @@ enum GBAIORegisters {
 	REG_HALTCNT = 0x301
 };
 
+void GBAIOInit(struct GBA* gba);
 void GBAIOWrite(struct GBA* gba, uint32_t address, uint16_t value);
 void GBAIOWrite32(struct GBA* gba, uint32_t address, uint32_t value);
 uint16_t GBAIORead(struct GBA* gba, uint32_t address);
diff --git a/src/gba/gba.c b/src/gba/gba.c
index 6d305bb9b..ff5ef94b0 100644
--- a/src/gba/gba.c
+++ b/src/gba/gba.c
@@ -37,6 +37,8 @@ void GBAInit(struct GBA* gba) {
 	gba->video.p = gba;
 	GBAVideoInit(&gba->video);
 
+	GBAIOInit(gba);
+
 	gba->springIRQ = 0;
 
 	ARMReset(&gba->cpu);