--- src/libvga.h.orig
+++ src/libvga.h
@@ -303,8 +303,8 @@ static __inline__ void port_outw(int val
 
 static __inline__ void port_outl(int value, int port)
 {
-    __asm__ volatile ("outl %0,%1"
-             ::"a" ((unsigned long)value), "d" ((unsigned short) port));
+    __asm__ volatile ("outl %0,%w1"
+             ::"a" ((unsigned int)value), "Nd" ((unsigned short) port));
 }
 
 static __inline__ int port_in(int port)
@@ -328,9 +328,9 @@ static __inline__ int port_inw(int port)
 static __inline__ int port_inl(int port)
 {
     unsigned int value;
-    __asm__ volatile("inl %1,%0" :
+    __asm__ volatile("inl %w1,%0" :
                	     "=a" (value) :
-                     "d" ((unsigned short)port));
+                     "Nd" ((unsigned short)port));
     return value;
 }
 
--- gl/inlstring.h.orig
+++ gl/inlstring.h
@@ -98,7 +98,7 @@ static inline void *
 	       "cmpl $12,%%edx\n\t"
 	       "jl 1f\n\t"	/* if (count >= 12) */
 
-	       "movzbl %%al,%%ax\n\t"
+	       "movzbl %%al,%%eax\n\t"
 	       "movl %%eax,%%ecx\n\t"
 	       "shll $8,%%ecx\n\t"	/* c |= c << 8 */
 	       "orl %%ecx,%%eax\n\t"
@@ -236,7 +236,7 @@ static inline void *
 	       "cmpl $0,%%edx\n\t"	/* none left? */
 	       "jle 4f\n\t"	/* finished */
 
-	       "mov %%ecx,%%eax\n\t"
+	       "movl %%ecx,%%eax\n\t"
 	       "shrl $8,%%ecx\n\t"	/* R in cl */
 
 	       "3:\n\t"		/* write last few pixels */
--- gl/mem.S.orig
+++ gl/mem.S
@@ -76,7 +76,7 @@ ENTRY(memcpy4to3)
 	jz 4f			/* none left */
 
 3:	movl (%esi),%eax
-	movw %eax,(%edi)
+	movw %ax,(%edi)
 	shrl $16,%eax
 	movb %al,2(%edi)
 	addl $4,%esi