diff --git a/SMILEBASIC/VM.d b/SMILEBASIC/VM.d
index ecef73e..9309360 100644
--- a/SMILEBASIC/VM.d
+++ b/SMILEBASIC/VM.d
@@ -867,8 +867,8 @@ class CallBuiltinFunction : Code
     }
     override void execute(VM vm)
     {
-        Value[] arg = vm.stack[vm.stacki - argcount..vm.stacki - 1];
-        Value[] result = vm.stack[vm.stacki - argcount..vm.stacki - argcount + outcount - 1];//雑;
+        Value[] arg = vm.stack[vm.stacki - argcount..vm.stacki];
+        Value[] result = vm.stack[vm.stacki - argcount..vm.stacki - argcount + outcount];//雑;
         func.func(vm.petitcomputer, arg, result);
     }
 }
diff --git a/SMILEBASIC/builtinfunctions.d b/SMILEBASIC/builtinfunctions.d
index 84d7ab5..b197acf 100644
--- a/SMILEBASIC/builtinfunctions.d
+++ b/SMILEBASIC/builtinfunctions.d
@@ -50,11 +50,12 @@ class BuiltinFunction
     }
     import std.math;
     /*
-    static pure double ABS(double a, double b)
+    static pure double ABS(double a)
     {
         return a < 0 ? -a : a;
     }*/
-    static ABS = function(double x) => abs(x);
+    static double function(double) ABS = &abs!double;
+    //static ABS = function double(double x) => abs(this.result == ValueType.Double ? 1 : 0);
     static void LOCATE(PetitComputer p, DefaultValue!int x, DefaultValue!int y, DefaultValue!int z)
     {
     }
diff --git a/SMILEBASIC/compiler.d b/SMILEBASIC/compiler.d
index b23773e..f730e85 100644
--- a/SMILEBASIC/compiler.d
+++ b/SMILEBASIC/compiler.d
@@ -335,7 +335,15 @@ class Compiler
                     {
                         compileExpression(i, sc);
                     }
-                    genCode(new CallFunctionCode(func.name, func.args.length));
+                    auto bfun = otya.smilebasic.builtinfunctions.BuiltinFunction.builtinFunctions.get(func.name, null);
+                    if(bfun)
+                    {
+                        genCode(new CallBuiltinFunction(bfun, func.args.length, 1));
+                    }
+                    else
+                    {
+                        genCode(new CallFunctionCode(func.name, func.args.length));
+                    }
                 }
                 break;
             case NodeType.IndexExpressions://[expr,expr,expr,expr]用
@@ -598,7 +606,15 @@ class Compiler
                     {
                         compileExpression(j, s);
                     }
-                    genCode(new CallFunctionCode(func.name, func.args.length, func.outVariable.length));
+                    auto bfun = otya.smilebasic.builtinfunctions.BuiltinFunction.builtinFunctions.get(func.name, null);
+                    if(bfun)
+                    {
+                        genCode(new CallBuiltinFunction(bfun, func.args.length, func.outVariable.length));
+                    }
+                    else
+                    {
+                        genCode(new CallFunctionCode(func.name, func.args.length, func.outVariable.length));
+                    }
                     //TODO:OUT
                     foreach_reverse(wstring var; func.outVariable)
                     {
diff --git a/SMILEBASIC/main.d b/SMILEBASIC/main.d
index 9372fab..fe7c265 100644
--- a/SMILEBASIC/main.d
+++ b/SMILEBASIC/main.d
@@ -13,7 +13,8 @@ int main(string[] argv)
         writeln(parser.calc());
     }
 
-    
+    version(none)
+    {
     auto parser = new Parser(
 //"@A\nA=1+2+3+4\nPRINT 1+1,2+3;10-5,A:A=A*2 PRINT A
 "
@@ -120,6 +121,7 @@ END
     {
         writeln(t);
     }
+    }
     try
     {
         auto pc = new PetitComputer();
diff --git a/SMILEBASIC/petitcomputer.d b/SMILEBASIC/petitcomputer.d
index 1c51b4d..674e44a 100644
--- a/SMILEBASIC/petitcomputer.d
+++ b/SMILEBASIC/petitcomputer.d
@@ -178,7 +178,7 @@ class PetitComputer
         GRPF.createTexture(renderer);
         //とりあえず
         auto parser = new Parser(/*readText("FIZZBUZZ.TXT").to!wstring*/"
-
+?ABS(-1)
 FOR I=0 TO 10
  ?I;\"!\",\"=\",FACT(I)
 NEXT
@@ -209,7 +209,7 @@ END");
                     catch
                     {
                     }
-                }
+                }/*
                 catch(Throwable t)
                 {
                     running = false;
@@ -220,7 +220,7 @@ END");
                     catch
                     {
                     }
-                }
+                }*/
                 elapse = SDL_GetTicks() - startTicks;
             } while(elapse <= 1000 / 60);
             SDL_Event event;