diff --git a/gr-sim/tfv_flying_6502.c b/gr-sim/tfv_flying_6502.c
index dbf0a913..e02a45c9 100644
--- a/gr-sim/tfv_flying_6502.c
+++ b/gr-sim/tfv_flying_6502.c
@@ -600,207 +600,6 @@ y_positive:
 }
 
 
-#if 0
-
-static void fixed_mul(unsigned char x_i, unsigned char x_f,
-			unsigned char y_i, unsigned char y_f,
-			unsigned char *z_i, unsigned char *z_f) {
-
-
-	int num1h,num1l;
-	int num2h,num2l;
-	int result3;
-	int result2,result1,result0;
-	int aa,xx,cc=0,cc2,yy;
-	unsigned char negate;
-
-	num1h=x_i;
-	num1l=x_f;
-
-	negate=0;
-						cycles.multiply+=10;
-	if (!(num1h&0x80)) goto check_num2;
-						cycles.multiply--;
-	negate++;
-
-	num1l=~num1l;
-	num1h=~num1h;
-
-	num1l&=0xff;
-	num1h&=0xff;
-
-	num1l+=1;
-	cc=!!(num1l&0x100);
-	num1h+=cc;
-
-	num1l&=0xff;
-	num1h&=0xff;
-						cycles.multiply+=25;
-check_num2:
-
-	num2h=y_i;
-	num2l=y_f;
-						cycles.multiply+=6;
-	if (!(num2h&0x80)) goto unsigned_multiply;
-						cycles.multiply--;
-	negate++;
-
-	num2l=~num2l;
-	num2h=~num2h;
-
-	num2l&=0xff;
-	num2h&=0xff;
-
-	num2l+=1;
-	cc=!!(num2l&0x100);
-	num2h+=cc;
-
-	num2l&=0xff;
-	num2h&=0xff;
-						cycles.multiply+=25;
-unsigned_multiply:
-
-//	if (debug) {
-//		printf("Using %02x:%02x * %02x:%02x\n",num1h,num1l,num2h,num2l);
-//	}
-
-	result0=0;
-	result1=0;
-
-	aa=0;		// lda #0 (sz)
-	result2=aa;	// sta result+2
-	xx=16;		// ldx #16 (sz)
-						cycles.multiply+=7;
-multiply_mainloop:
-	cc=(num2h&1);	//lsr NUM2+1 (szc)
-	num2h>>=1;
-	num2h&=0x7f;
-//	if (num2_neg) {
-//		num2h|=0x80;
-//	}
-
-	cc2=(num2l&1);	// ror NUM2 (szc)
-	num2l>>=1;
-	num2l&=0x7f;
-
-
-	num2l|=(cc<<7);
-	cc=cc2;
-						cycles.multiply+=13;
-	if (cc==0) goto shift_output;	// bcc L2
-						cycles.multiply--;
-
-	yy=aa;				// tay (sz)
-	cc=0;				// clc
-	aa=num1l;			// lda NUM1 (sz)
-	aa=aa+cc+result2;		// adc RESULT+2 (svzc)
-	cc=!!(aa&0x100);
-	aa&=0xff;
-	result2=aa;			// sta RESULT+2
-	aa=yy;				// tya
-	aa=aa+cc+num1h;			// adc NUM1+1
-	cc=!!(aa&0x100);
-	aa=aa&0xff;
-						cycles.multiply+=18;
-shift_output:
-	cc2=aa&1;
-	aa=aa>>1;
-	aa&=0x7f;
-	aa|=cc<<7;
-	cc=cc2;		// ror A
-
-	cc2=result2&1;
-	result2=result2>>1;
-	result2&=0x7f;
-	result2|=(cc<<7);
-	cc=cc2;		// ror result+2
-
-	cc2=result1&1;
-	result1=result1>>1;
-	result1&=0x7f;
-	result1|=cc<<7;
-	cc=cc2;		// ror result+1
-
-	cc2=result0&1;
-	result0=result0>>1;
-	result0&=0x7f;
-	result0|=cc<<7;
-	cc=cc2;		// ror result+0
-
-	xx--;				// dex
-						cycles.multiply+=22;
-	if (xx!=0) goto multiply_mainloop;	// bne L1
-						cycles.multiply--;
-	result3=aa&0xff;		// sta result+3
-
-
-//	if (debug) {
-//		printf("RAW RESULT = %02x:%02x:%02x:%02x\n",
-//			result3&0xff,result2&0xff,result1&0xff,result0&0xff);
-//	}
-						cycles.multiply+=11;
-	if (negate&1) {
-//		printf("NEGATING!\n");
-						cycles.multiply--;
-		cc=0;
-
-		aa=0;
-		aa-=result0+cc;
-		cc=!!(aa&0x100);
-		result0=aa;
-
-		aa=0;
-		aa-=result1+cc;
-		cc=!!(aa&0x100);
-		result1=aa;
-
-		aa=0;
-		aa-=result2+cc;
-		cc=!!(aa&0x100);
-		result2=aa;
-
-		aa=0;
-		aa-=result3+cc;
-		cc=!!(aa&0x100);
-		result3=aa;
-							cycles.multiply+=42;
-	}
-
-	*z_i=result2&0xff;
-	*z_f=result1&0xff;
-
-	result3&=0xff;
-	result2&=0xff;
-	result1&=0xff;
-	result0&=0xff;
-
-
-//	if (debug) {
-//		printf("%02x:%02x * %02x:%02x = %02x:%02x:%02x:%02x\n",
-//			num1h,num1l,y->i,y->f,
-//			result3&0xff,result2&0xff,result1&0xff,result0&0xff);
-
-//		printf("%02x%02x * %02x%02x = %02x%02x%02x%02x\n",
-//			num1h,num1l,y->i,y->f,
-//			result3,result2,result1,result0);
-//	}
-
-//	int a2;
-//	int s1,s2;
-//	s1=(num1h<<8)|(num1l);
-//	s2=(y->i<<8)|(y->f);
-//	a2=(result3<<24)|(result2<<16)|(result1<<8)|result0;
-//	printf("%d * %d = %d (0x%x)\n",s1,s2,a2,a2);
-
-						cycles.multiply+=6;
-	return;
-
-}
-
-#endif
-
-
-
 static void draw_background_mode7(void) {