#include "vend.h"
#include "chime.h"
-u8 chime_count;
+volatile u8 chime_count;
void chime() {
/* called from the RTI interrupt, sees if we need to turn the chime on or
- * off (chime would be on for N RTI cycles
+ * off (chime would be on for N RTI cycles)
*/
if (chime_count) {
- bset((void*)&_io_ports[M6811_PORTA], PORTA_CHIME);
- --chime_count;
+ chime_on();
+ --chime_count; /* interrupts masked here, so this won't result in badness */
} else
- bclr((void*)&_io_ports[M6811_PORTA], PORTA_CHIME);
+ chime_off();
}