diff --git a/src/main.c b/src/main.c
index 00cfb99..b951e9a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -103,26 +103,19 @@ int main()
 	uint sm1 = pio_claim_unused_sm(pio, true);
 	printf("Starting VGA sync machine on %u...\n", sm1);
 	vga_sync_program_init(pio, sm1, offset1);
+	printf("Feeding horizontal sync...\n");
+	pio_sm_put_blocking(pio, sm1, 63 * 4);
+	pio_sm_put_blocking(pio, sm1, 775 * 4);
 
-	printf("Welcome.\n");
+	printf("Start!\n");
 
 	while (true)
 	{
 		for (size_t i = 0; i < sizeof(frames[0].data);)
 		{
-			// feed sync machine
-			if (pio_sm_get_tx_fifo_level(pio, sm1) <= 4)
-			{
-				pio_sm_put_blocking(pio, sm1, 63 * 4);
-				pio_sm_put_blocking(pio, sm1, 775 * 4);
-			}
-
 			// feed pixel machine
 			if (!pio_sm_is_tx_fifo_full(pio, sm0))
 				pio_sm_put_blocking(pio, sm0, frames[0].data[i++]);
 		}
-		// printf(".");
-
-		// sleep_ms(1000);
 	}
 }
diff --git a/src/vga.pio b/src/vga.pio
index 0d985dd..6f8876d 100644
--- a/src/vga.pio
+++ b/src/vga.pio
@@ -9,14 +9,16 @@ loop:
 .program vga_sync
 
 entrypoint_vga_sync:
-loop:
     pull
-    mov x, osr
+    mov isr, osr
+    pull
+
+loop:
+    mov x, isr
     set pins, 0
 hsync_pulse:
     jmp x-- hsync_pulse
 
-    pull
     mov x, osr
     set pins, 1
 hsync_idle: