diff --git a/src/northsouthbridge/sis/540/ipl.S b/src/northsouthbridge/sis/540/ipl.S
index da1153bf92..a06a60602d 100644
--- a/src/northsouthbridge/sis/540/ipl.S
+++ b/src/northsouthbridge/sis/540/ipl.S
@@ -185,7 +185,7 @@ no_sdram:
 no_sdram:
 #ifdef HAVE_FRAMEBUFFER
 	movb	$0x63, %ah			# enable DIMM 0 and
-	movw	$SMA_SIZE + $0x01, %ax		# enable SMA 8 MB for VGA
+	movb	$(SMA_SIZE + 0x01), %al		# enable SMA 8 MB for VGA
 #else /* HAVE_FRAMEBUFFER */
 	movw	$0x6301, %ax			# enable DIMM 0 
 #endif /* HAVE_FRAMEBUFFER */
diff --git a/src/northsouthbridge/sis/550/ipl.S b/src/northsouthbridge/sis/550/ipl.S
index 2a21985d83..dc6049741e 100644
--- a/src/northsouthbridge/sis/550/ipl.S
+++ b/src/northsouthbridge/sis/550/ipl.S
@@ -192,7 +192,7 @@ no_sdram:
 no_sdram:
 #ifdef HAVE_FRAMEBUFFER
 	movb	$0x63, %ah			# enable DIMM 0 and
-	movw	$SMA_SIZE + $0x01, %ax		# enable SMA 8 MB for VGA
+	movb	$(SMA_SIZE + 0x01), %al		# enable SMA 8 MB for VGA
 #else /* HAVE_FRAMEBUFFER */
 	movw	$0x6301, %ax			# enable DIMM 0 
 #endif /* HAVE_FRAMEBUFFER */
diff --git a/src/northsouthbridge/sis/630/ipl.S b/src/northsouthbridge/sis/630/ipl.S
index db3eb66879..5a933c46bf 100644
--- a/src/northsouthbridge/sis/630/ipl.S
+++ b/src/northsouthbridge/sis/630/ipl.S
@@ -185,7 +185,7 @@ no_sdram:
 no_sdram:
 #ifdef HAVE_FRAMEBUFFER
 	movb	$0x63, %ah			# enable DIMM 0 and
-	movw	$SMA_SIZE + $0x01, %ax		# enable SMA 8 MB for VGA
+	movb	$(SMA_SIZE + 0x01), %al		# enable SMA 8 MB for VGA
 #else /* HAVE_FRAMEBUFFER */
 	movw	$0x6301, %ax			# enable DIMM 0 
 #endif /* HAVE_FRAMEBUFFER */
diff --git a/src/northsouthbridge/sis/730/ipl.S b/src/northsouthbridge/sis/730/ipl.S
index 1364e29646..8e519411d9 100644
--- a/src/northsouthbridge/sis/730/ipl.S
+++ b/src/northsouthbridge/sis/730/ipl.S
@@ -185,7 +185,7 @@ no_sdram:
 no_sdram:
 #ifdef HAVE_FRAMEBUFFER
 	movb	$0x63, %ah			# enable DIMM 0 and
-	movw	$SMA_SIZE + $0x01, %ax		# enable SMA 8 MB for VGA
+	movb	$(SMA_SIZE + 0x01), %al		# enable SMA 8 MB for VGA
 #else /* HAVE_FRAMEBUFFER */
 	movw	$0x6301, %ax			# enable DIMM 0 
 #endif /* HAVE_FRAMEBUFFER */