diff --git a/source/arm11/open_agb_firm.c b/source/arm11/open_agb_firm.c
index 059dde4..5cbf95c 100644
--- a/source/arm11/open_agb_firm.c
+++ b/source/arm11/open_agb_firm.c
@@ -691,16 +691,16 @@ static void gbaGfxHandler(void *args)
 		// 所以GPU做的事情就是将18200000的数据逆时针旋转90°
 		if( g_oafConfig.scaler == 0 ) // 上屏无缩放
 		{
-			int base_offset = 96; // 3ds高240, gba高160，居中需要平移40个像素，rgb888每个像素3字节，共120字节
+			int base_offset = 57600; // 3ds高240, gba高160，居中需要平移40个像素，rgb888每个像素3字节，共120字节
 			// 但是，gpu的transfer engine只支持16字节对齐的地址。所以只能选择16和3的公约数，就是48,96,144,192,240
-			GX_displayTransfer((u32*)(0x18180000 + 16*240*3), 368u<<16 | 240u,
-		                   GFX_getFramebuffer(SCREEN_TOP) + 16*240*3 + base_offset, 368u<<16 | 240u, 1u<<12 | 1u<<8);
+			GX_displayTransfer((u32*)(0x18180000), 240u<<16 | 240u,
+		                   GFX_getFramebuffer(SCREEN_TOP) + base_offset, 240u<<16 | 240u, 1u<<12 | 1u<<8);
 		}
 		else if( g_oafConfig.scaler == 3 )//下屏无缩放
 		{
-			int base_offset = 16*240*3;
-			GX_displayTransfer((u32*)(0x18180000), 320u<<16 | 240u,
-		                   GFX_getFramebuffer(SCREEN_BOT), 320u<<16 | 240u, 1u<<12 | 1u<<8);
+			int base_offset = 28800;
+			GX_displayTransfer((u32*)(0x18180000), 240u<<16 | 240u,
+		                   GFX_getFramebuffer(SCREEN_BOT) + base_offset, 240u<<16 | 240u, 1u<<12 | 1u<<8);
 		}
 		else GX_displayTransfer((u32*)(0x18180000 + 16*240*3), 368u<<16 | 240u,
 		                   GFX_getFramebuffer(SCREEN_TOP) + 16*240*3, 368u<<16 | 240u, 1u<<12 | 1u<<8);
@@ -941,7 +941,12 @@ Result oafInitAndRun(void)
 				{
 					LGYFB_init(frameReadyEvent, g_oafConfig.scaler); // 这里把GBA的输出转换成0x18200000处512x512大小的纹理
 					patchGbaGpuCmdList(g_oafConfig.scaler);
-					if( g_oafConfig.scaler == 3u ) GFX_setFramebufFmt(GFX_BGR8, GFX_BGR8);
+					if( g_oafConfig.scaler == 3u )
+					{
+						memset(consoleGet()->frameBuffer, 0, 320*240*2);
+						GFX_setDoubleBuffering( SCREEN_BOT, true );
+						GFX_setFramebufFmt(GFX_BGR8, GFX_BGR8);
+					}
 				}
 				createTask(0x800, 3, gbaGfxHandler, (void*)frameReadyEvent);
 				g_frameReadyEvent = frameReadyEvent;