paulo@0: #include "ljgba.h"
paulo@0: #define BIOS_IF (*(volatile unsigned short *)0x03FFFFF8)
paulo@0: 
paulo@0: volatile int curTime = 0;
paulo@0: 
paulo@0: void isr(void) {
paulo@0:   unsigned int interrupts = REG_IF;
paulo@0: 
paulo@0:   if (interrupts & IRQ_VBLANK) {
paulo@0:     ++curTime;
paulo@0:   }
paulo@0: 
paulo@0:   BIOS_IF |= interrupts;
paulo@0:   REG_IF = interrupts;
paulo@0: }