diff --git a/SMILEBASIC/graphic.d b/SMILEBASIC/graphic.d
index 3706380..274facb 100644
--- a/SMILEBASIC/graphic.d
+++ b/SMILEBASIC/graphic.d
@@ -200,6 +200,7 @@ class Graphic
     }
     @property void useGRP(int page)
     {
+        glBindFramebufferEXT(GL_FRAMEBUFFER, this.GRP[page].buffer);
         usePage[petitcom.displaynum] = page;
     }
     @property void showGRP(int page)
@@ -434,6 +435,18 @@ class Graphic
         glDisable(GL_ALPHA_TEST);
         glDisable(GL_DEPTH_TEST);
     }
+    int drc = 0;
+    void display(int display)
+    {
+        void chScreen(int x, int y, int w, int h)
+        {
+            glViewport(x, y, w, h);
+            glMatrixMode(GL_PROJECTION);
+            glLoadIdentity();
+            glOrtho(x, x + w - 1, y, y + h - 1, -256, 1024);//wakaranai
+        }
+        chScreen(writeArea[display].x, writeArea[display].y, writeArea[display].w, writeArea[display].h);
+    }
     void draw2()
     {
         if (!GRP[0].glTexture)
@@ -561,6 +574,7 @@ class Graphic
         glDisable(GL_TEXTURE_2D);
         glDisable(GL_ALPHA_TEST);
         glDisable(GL_DEPTH_TEST);
+        drc++;
     }
     DrawMessage[] drawMessageQueue = new DrawMessage[1];
     int drawMessageLength;
@@ -568,9 +582,9 @@ class Graphic
     bool flushRequired;
     void updateVM()
     {
-        if (flushRequired)
+        if (drc)
             glFlush();
-        flushRequired = false;
+        drc = 0;
     }
     void sendDrawMessage(DrawMessage dm)
     {
@@ -580,7 +594,6 @@ class Graphic
         }
         drawMessageQueue[0] = dm;
         draw2();
-        flushRequired = true;
     }
     void sendDrawMessage(DrawType type, byte page, short x, short y, uint color)
     {
@@ -606,26 +619,57 @@ class Graphic
         dm.display = cast(byte)petitcom.displaynum;
         sendDrawMessage(dm);
     }
+    uint convertColor(uint color)
+    {
+        return petitcom.toGLColor(this.GRP[0].textureFormat, color & 0xFFF8F8F8);
+    }
     //TODO:範囲チェック
     void gpset(int page, int x, int y, uint color)
     {
-        sendDrawMessage(DrawType.PSET, cast(byte)page, cast(short)x, cast(short)y, color);
+        color = convertColor(color);
+        glBegin(GL_POINTS);
+        glColor4ubv(cast(ubyte*)&color);
+        glVertex2f(x, y);
+        glEnd();
+        drc++;
     }
     void gline(int page, int x, int y, int x2, int y2, uint color)
     {
-        sendDrawMessage(DrawType.LINE, cast(byte)page, cast(short)x, cast(short)y, cast(short)x2, cast(short)y2, color);
+        color = convertColor(color);
+        glBegin(GL_LINES);
+        glColor4ubv(cast(ubyte*)&color);
+        glVertex2f(x, y);
+        glVertex2f(x2, y2);
+        glEnd();
+        drc++;
     }
     void gbox(int page, int x, int y, int x2, int y2, uint color)
     {
-        sendDrawMessage(DrawType.BOX, cast(byte)page, cast(short)x, cast(short)y, cast(short)x2, cast(short)y2, color);
+        color = convertColor(color);
+        glBegin(GL_LINE_LOOP);
+        glColor4ubv(cast(ubyte*)&color);
+        glVertex2f(x, y);
+        glVertex2f(x, y2);
+        glVertex2f(x2, y2);
+        glVertex2f(x2, y);
+        glEnd();
+        drc++;
     }
     void gfill(int page, int x, int y, int x2, int y2, uint color)
     {
-        sendDrawMessage(DrawType.FILL, cast(byte)page, cast(short)x, cast(short)y, cast(short)x2, cast(short)y2, color);
+        color = convertColor(color);
+        glBegin(GL_QUADS);
+        glColor4ubv(cast(ubyte*)&color);
+        glVertex2f(x, y);
+        glVertex2f(x, y2);
+        glVertex2f(x2, y2);
+        glVertex2f(x2, y);
+        glEnd();
+        drc++;
     }
     void gcls(int page, uint color)
     {
-        sendDrawMessage(DrawType.FILL, cast(byte)page, 0, 0, cast(short)(width - 1), cast(short)(height - 1), color);
+        gfill(page, 0, 0, width - 1, height - 1, color);
     }
     void gpaint(int page, int x, int y, uint color)
     {
diff --git a/SMILEBASIC/petitcomputer.d b/SMILEBASIC/petitcomputer.d
index 8fcc54c..b755782 100644
--- a/SMILEBASIC/petitcomputer.d
+++ b/SMILEBASIC/petitcomputer.d
@@ -302,7 +302,6 @@ class PetitComputer
         {
             console.loadFontTable();
         }
-        display(0);
         writeln("OK");
     }
     int currentScreenWidth;
@@ -316,6 +315,7 @@ class PetitComputer
         displaynum = number;
 
         console.display(number);
+        graphic.display(number);
     }
     SDL_Renderer* renderer;
     int vsyncFrame;
@@ -703,14 +703,6 @@ class PetitComputer
                     console.render();
 
                     graphic.render();
-                    if(xscreenmode == 2)
-                    {
-                        chScreen(0, 0, 320, 480);
-                    }
-                    if(xscreenmode == 1)
-                    {
-                        chScreen(0, 240, 400, 240);
-                    }
                     version(test) glLoadIdentity();
                     version(test) glRotatef(rot_test_deg, rot_test_x, rot_test_y, rot_test_z);
 
@@ -940,6 +932,7 @@ class PetitComputer
             renderCondition.wait();
         }
         graphic.initVM();
+        display(0);
         xscreen(0, 512, 4);
         auto startTicks = SDL_GetTicks();
         Parser parser;
@@ -1093,11 +1086,12 @@ class PetitComputer
             {
                 uint elapse;
                 startTicks = SDL_GetTicks();
+                int oldmaincnt = maincnt;
                 //do
                 {
                     try
                     {
-                        for(int i = 0; i < 128 && !vsyncFrame && running; i++)
+                        for(int i = 0; !quit && maincnt == oldmaincnt && !vsyncFrame && running; i++)
                         {
                             //writefln("%04X:%s", vm.pc, vm.getCurrent);
                             running = vm.runStep();