diff --git a/src/mame/drivers/gunpey.c b/src/mame/drivers/gunpey.c
index 53945bbbb39..b413cc629b0 100644
--- a/src/mame/drivers/gunpey.c
+++ b/src/mame/drivers/gunpey.c
@@ -156,11 +156,11 @@ static WRITE8_HANDLER( gunpey_blitter_w )
 		}
 
 
-		printf("%02x %02x %02x %02x|%02x %02x %02x %02x|%02x %02x %02x %02x|%02x %02x %02x %02x\n"
-		,blit_ram[0],blit_ram[1],blit_ram[2],blit_ram[3]
-		,blit_ram[4],blit_ram[5],blit_ram[6],blit_ram[7]
-		,blit_ram[8],blit_ram[9],blit_ram[0xa],blit_ram[0xb]
-		,blit_ram[0xc],blit_ram[0xd],blit_ram[0xe],blit_ram[0xf]);
+//		printf("%02x %02x %02x %02x|%02x %02x %02x %02x|%02x %02x %02x %02x|%02x %02x %02x %02x\n"
+//		,blit_ram[0],blit_ram[1],blit_ram[2],blit_ram[3]
+//		,blit_ram[4],blit_ram[5],blit_ram[6],blit_ram[7]
+//		,blit_ram[8],blit_ram[9],blit_ram[0xa],blit_ram[0xb]
+//		,blit_ram[0xc],blit_ram[0xd],blit_ram[0xe],blit_ram[0xf]);
 	}
 }
 
diff --git a/src/mame/drivers/monzagp.c b/src/mame/drivers/monzagp.c
index c321493fbb3..99adb6def8c 100644
--- a/src/mame/drivers/monzagp.c
+++ b/src/mame/drivers/monzagp.c
@@ -163,17 +163,17 @@ static WRITE8_HANDLER(port_w)
 
 static WRITE8_HANDLER(port0_w)
 {
-	printf("P0 %x = %x\n",cpu_get_pc(space->cpu),data);
+//	printf("P0 %x = %x\n",cpu_get_pc(space->cpu),data);
 }
 
 static WRITE8_HANDLER(port1_w)
 {
-	printf("P1 %x = %x\n",cpu_get_pc(space->cpu),data);
+//	printf("P1 %x = %x\n",cpu_get_pc(space->cpu),data);
 }
 
 static WRITE8_HANDLER(port2_w)
 {
-	printf("P2 %x = %x\n",cpu_get_pc(space->cpu),data);
+//	printf("P2 %x = %x\n",cpu_get_pc(space->cpu),data);
 	coordy=data;
 }