diff --git a/ubb-vga/ubb-vga.c b/ubb-vga/ubb-vga.c
index 426039e..51b43e8 100644
--- a/ubb-vga/ubb-vga.c
+++ b/ubb-vga/ubb-vga.c
@@ -249,6 +249,11 @@ static void setup_noirq(void)
 	DMAC = 1;
 	DCS(DMA) = (1 << 3) | (1 << 2);
 	DCS(DMA) = 0;
+
+	DCM(DMA) =
+	    (1 << 23) |         /* source address increment */
+	    (4 << 8);           /* transfer size is 32 bytes */
+	DRT(DMA) = 26;          /* MSC transmit-fifo-empty transfer request */
 }
 
 
@@ -269,12 +274,8 @@ static void line(unsigned long line)
 //	DCS(DMA) = (1 << 31) | (1 << 3) | (1 << 2);
 	DCS(DMA) = 1 << 31;
 	DSA(DMA) = line;
-	DTA(DMA) = REG_PADDR(MSC_TXFIFO);
+	DTA(DMA) = REG_PADDR(MSC_TXFIFO);	/* MUST set this each time */
 	DTC(DMA) = mode->xres >> 6;
-	DCM(DMA) =
-	    (1 << 23) |         /* source address increment */
-	    (4 << 8);           /* transfer size is 32 bytes */
-	DRT(DMA) = 26;          /* MSC transmit-fifo-empty transfer request */
 
 	until(US(0.79));