Dual trigger to gate

I started working on a gate generator firmware. The idea is to have multiple trigger inputs that affect 2 gate outputs. The first iteration has the following design goals:
* input cv-b toggles gate on output m
* input cv-c toggles gate on output s
* input cv-d toggles both outputs

I have the following code so far.

#include "wonkystuffCommon.h"

volatile uint8_t clockHappenedB = 0;
volatile uint8_t clockHappenedC = 0;
volatile uint8_t clockHappenedD = 0;

// wsKnob1  (A0)   PB5  PCINT5
// wsKnob2  (A1)   PB2  PCINT2
// wsKnob3  (A3)   PB3  PCINT3
// wsKnob4  (A2)   PB4  PCINT4
// wsOut1   (PB1)  m-out
// wsOut2   (PB0)  s-out

void setup(void) {
 GIMSK |= (1 << PCIE);
 
 PCMSK |= (1 << PCINT5);
 PCMSK |= (1 << PCINT2);
 PCMSK |= (1 << PCINT3);
 
 wsInit();  
 wsInitAudioLoop();
 wsPinClear(wsOut1);
 wsPinClear(wsOut2);
}

void loop(void) {}

void wsAudioLoop(void) {
 if (clockHappenedB) {
   wsToggleOutput(wsOut1);
   clockHappenedB = 0;
 }
 if (clockHappenedC) {
   wsToggleOutput(wsOut2);
   clockHappenedC = 0;
 }
 if (clockHappenedD) {
   wsToggleOutput(wsOut1);
   wsToggleOutput(wsOut2);
   clockHappenedD = 0;
 }
}


ISR(PCINT0_vect) {
   if (PINB & _BV(PB5))
   {
       clockHappenedB = 1;
   }

   if (PINB & _BV(PB2))
   {
       clockHappenedC = 1;
   }

   if (PINB & _BV(PB3))
   {
       clockHappenedD = 1;
   }
}


Unfortunately all my attempts to upload it to the module failed so far. Feel free to try it for yourself. I would also appreciate feedback.