+int interrupt_change_callback(u8 src_number,u32 callback) {
+
+ int i;
+ u32 *addr,*cntl;
+
+ cntl=(u32 *)&VICVectCntl0;
+ addr=(u32 *)&VICVectAddr0;
+
+ i=0;
+ while(i<INTERRUPT_MAX_VIC) {
+ if((*cntl&0x1f)==src_number) {
+ *(addr+i)=callback;
+ return INTERRUPT_CALLBACK_CHANGED;
+ }
+ i++;
+ }
+
+ return INTERRUPT_SRC_NOT_USED;
+}
+