Implement VSU

core/game-pad.c

@@ -6,16 +6,16 @@
 /***************************** Library Functions *****************************/
 
 /* Process component */
-static int padEmulate(VB *sim, uint32_t clocks) {
+static void padEmulate(VB *sim, uint32_t clocks) {
 
     /* No hardware read in progress */
     if (sim->pad.si_stat == 0)
-        return 0;
+        return;
 
     /* Hardware read completes after time to process */
     if (sim->pad.si_stat > clocks) {
         sim->pad.si_stat -= clocks;
-        return 0;
+        return;
     }
 
     /* Complete hardware read */
@@ -30,7 +30,6 @@ static int padEmulate(VB *sim, uint32_t clocks) {
         (sim->pad.keys & 0x000E) == 0
     ) sim->cpu.irq |= 0x0001;
 
-    return 0;
 }
 
 /* Read a value from SCR */