apple1-videocard-lib/demos/demo/demo_interrupt.h

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// TODO make it static once KickC bug is fixed
byte last_seconds = 0;
void demo_interrupt() {
// resets the watch to 00:00:00.0
_ticks = 0;
_seconds = 0;
_minutes = 0;
_hours = 0;
// installs the interrupt handler routine
install_interrupt();
// enables interrupts on the TMS9918
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tms_set_interrupt_bit(INTERRUPT_ENABLED);
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woz_puts("INTERRUPT INSTALLED\r");
woz_puts("0 TURNS OFF\r");
woz_puts("1 TURNS ON\r");
woz_puts("E EXIT TO MAIN MENU\r");
for(;;) {
if(apple1_iskeypressed()) {
byte k = apple1_getkey();
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if(k=='1') { tms_set_interrupt_bit(INTERRUPT_ENABLED); woz_puts("INT ENABLED\r"); }
else if(k=='0') { tms_set_interrupt_bit(INTERRUPT_DISABLED); woz_puts("INT DISABLED\r"); }
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else if(k=='E') break;
}
if(last_seconds != _seconds) {
woz_print_hex(_hours); woz_putc(':');
woz_print_hex(_minutes); woz_putc(':');
woz_print_hex(_seconds); woz_putc('.');
woz_print_hex(_ticks); woz_putc('\r');
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last_seconds = _seconds;
}
}
// disables interrupts on the TMS9918
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tms_set_interrupt_bit(INTERRUPT_DISABLED);
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woz_puts("INTERRUPT STOPPED\r");
}