Message Integrity Checking

[uccvend-snackrom.git] / ROM2 / chime.c

diff --git a/ROM2/chime.c b/ROM2/chime.c
index 5318166..37ec78a 100644 (file)
--- a/ROM2/chime.c
+++ b/ROM2/chime.c
@@ -1,7 +1,8 @@
 #include "vend.h"
 #include "chime.h"
 
-u8 chime_count;
+volatile u8 chime_count;
+volatile u8 unchime_count; /* silence counter */
 
 void chime() {
        /* called from the RTI interrupt, sees if we need to turn the chime on or
@@ -12,5 +13,6 @@ void chime() {
                --chime_count; /* interrupts masked here, so this won't result in badness */
        } else
                chime_off();
+       if (unchime_count) --unchime_count;
 }