xchg %ah, %al /* Ext model in al now */
rol $0x08, %eax /* Ext model in ah, model in al */
and $0x0FFCF, ax /* Keep 23:16, 7:6, 3:0 */
.else
xchg %ah, %al /* Ext model in al now */
rol $0x08, %eax /* Ext model in ah, model in al */
and $0x0FFCF, ax /* Keep 23:16, 7:6, 3:0 */
.else