@@ -20,6 +20,13 @@ static int _applyBias(struct GBAAudio* audio, int sample);
 static void _sample(struct GBAAudio* audio);
 
 void GBAAudioInit(struct GBAAudio* audio) {
+	CircleBufferInit(&audio->left, GBA_AUDIO_SAMPLES * sizeof(int32_t));
+	CircleBufferInit(&audio->right, GBA_AUDIO_SAMPLES * sizeof(int32_t));
+	CircleBufferInit(&audio->chA.fifo, GBA_AUDIO_FIFO_SIZE);
+	CircleBufferInit(&audio->chB.fifo, GBA_AUDIO_FIFO_SIZE);
+}
+
+void GBAAudioReset(struct GBAAudio* audio) {
 	audio->nextEvent = 0;
 	audio->nextCh1 = 0;
 	audio->nextCh2 = 0;
@@ -49,10 +56,10 @@ audio->soundcntHi = 0;
 	audio->soundcntX = 0;
 	audio->sampleInterval = GBA_ARM7TDMI_FREQUENCY / audio->sampleRate;
 
-	CircleBufferInit(&audio->left, GBA_AUDIO_SAMPLES * sizeof(int32_t));
-	CircleBufferInit(&audio->right, GBA_AUDIO_SAMPLES * sizeof(int32_t));
-	CircleBufferInit(&audio->chA.fifo, GBA_AUDIO_FIFO_SIZE);
-	CircleBufferInit(&audio->chB.fifo, GBA_AUDIO_FIFO_SIZE);
+	CircleBufferClear(&audio->left);
+	CircleBufferClear(&audio->right);
+	CircleBufferClear(&audio->chA.fifo);
+	CircleBufferClear(&audio->chB.fifo);
 }
 
 void GBAAudioDeinit(struct GBAAudio* audio) {

@@ -219,6 +219,7 @@ int16_t right;
 };
 
 void GBAAudioInit(struct GBAAudio* audio);
+void GBAAudioReset(struct GBAAudio* audio);
 void GBAAudioDeinit(struct GBAAudio* audio);
 
 int32_t GBAAudioProcessEvents(struct GBAAudio* audio, int32_t cycles);

@@ -102,7 +102,6 @@
 	if (!gba->memory.wram || !gba->memory.iwram) {
 		GBAMemoryDeinit(gba);
 		GBALog(gba, GBA_LOG_FATAL, "Could not map memory");
-		return;
 	}
 }
 

@@ -9,6 +9,7 @@
 #include "util/memory.h"
 
 static void GBAVideoDummyRendererInit(struct GBAVideoRenderer* renderer);
+static void GBAVideoDummyRendererReset(struct GBAVideoRenderer* renderer);
 static void GBAVideoDummyRendererDeinit(struct GBAVideoRenderer* renderer);
 static uint16_t GBAVideoDummyRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
 static void GBAVideoDummyRendererDrawScanline(struct GBAVideoRenderer* renderer, int y);
@@ -16,6 +17,7 @@ static void GBAVideoDummyRendererFinishFrame(struct GBAVideoRenderer* renderer);
 
 static struct GBAVideoRenderer dummyRenderer = {
 	.init = GBAVideoDummyRendererInit,
+	.reset = GBAVideoDummyRendererReset,
 	.deinit = GBAVideoDummyRendererDeinit,
 	.writeVideoRegister = GBAVideoDummyRendererWriteVideoRegister,
 	.drawScanline = GBAVideoDummyRendererDrawScanline,
@@ -24,7 +26,10 @@ };
 
 void GBAVideoInit(struct GBAVideo* video) {
 	video->renderer = &dummyRenderer;
+	video->vram = 0;
+}
 
+void GBAVideoReset(struct GBAVideo* video) {
 	video->inHblank = 0;
 	video->inVblank = 0;
 	video->vcounter = 0;
@@ -44,11 +49,18 @@ video->nextHblankIRQ = 0;
 	video->nextVblankIRQ = 0;
 	video->nextVcounterIRQ = 0;
 
+	if (video->vram) {
+		mappedMemoryFree(video->vram, SIZE_VRAM);
+	}
 	video->vram = anonymousMemoryMap(SIZE_VRAM);
+	video->renderer->vram = video->vram;
 
 	int i;
 	for (i = 0; i < 128; ++i) {
-		video->oam.obj[i].disable = 1;
+		video->oam.raw[i * 4] = 0x0200;
+		video->oam.raw[i * 4 + 1] = 0x0000;
+		video->oam.raw[i * 4 + 2] = 0x0000;
+		video->oam.raw[i * 4 + 3] = 0x0000;
 	}
 }
 
@@ -157,6 +169,11 @@ }
 }
 
 static void GBAVideoDummyRendererInit(struct GBAVideoRenderer* renderer) {
+	UNUSED(renderer);
+	// Nothing to do
+}
+
+static void GBAVideoDummyRendererReset(struct GBAVideoRenderer* renderer) {
 	UNUSED(renderer);
 	// Nothing to do
 }

@@ -169,6 +169,7 @@ };
 
 struct GBAVideoRenderer {
 	void (*init)(struct GBAVideoRenderer* renderer);
+	void (*reset)(struct GBAVideoRenderer* renderer);
 	void (*deinit)(struct GBAVideoRenderer* renderer);
 
 	uint16_t (*writeVideoRegister)(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
@@ -213,6 +214,7 @@ union GBAOAM oam;
 };
 
 void GBAVideoInit(struct GBAVideo* video);
+void GBAVideoReset(struct GBAVideo* video);
 void GBAVideoDeinit(struct GBAVideo* video);
 void GBAVideoAssociateRenderer(struct GBAVideo* video, struct GBAVideoRenderer* renderer);
 int32_t GBAVideoProcessEvents(struct GBAVideo* video, int32_t cycles);

@@ -182,6 +182,9 @@ cpu->gprs[ARM_SP] = SP_BASE_SYSTEM;
 
 	struct GBA* gba = (struct GBA*) cpu->master;
 	GBAMemoryReset(gba);
+	GBAVideoReset(&gba->video);
+	GBAAudioReset(&gba->audio);
+	GBAIOInit(gba);
 }
 
 static void GBAProcessEvents(struct ARMCore* cpu) {

@@ -60,6 +60,7 @@ static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB);
 
 void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer) {
 	renderer->d.init = GBAVideoSoftwareRendererInit;
+	renderer->d.reset = GBAVideoSoftwareRendererInit;
 	renderer->d.deinit = GBAVideoSoftwareRendererDeinit;
 	renderer->d.writeVideoRegister = GBAVideoSoftwareRendererWriteVideoRegister;
 	renderer->d.writeOAM = GBAVideoSoftwareRendererWriteOAM;