PB0 Attiny84 not working?

Development Boards Arduino
1

Hi,

see code below where i use digitalWrite to write to PB0 (dp). Problem is, when simulating it in proteus, it writes to PA0 instead! i tried to use “const int dp = 10”, but then nothing happens… what is going on?

This code will be for a clock, but its not finished.

void displayWrite (byte);
void displayPrint (int);
void selectDisplay(byte);
void selectDisplay(byte);
const int dp = PB0; //:
#define dispOnTime 1000
void setup() {
  // put your setup code here, to run once:
  pinMode(PA0, OUTPUT); //a
  pinMode(PA1, OUTPUT); //b
  pinMode(PA2, OUTPUT); //c
  pinMode(PA3, OUTPUT); //d
  
  pinMode(dp, OUTPUT);
  pinMode(9, OUTPUT); //PB1 selectA
  pinMode(8, OUTPUT); //PB2 selectB
}

void loop() {
  // put your main code here, to run repeatedly: 
  displayPrint(754); 
}

void displayPrint (int sec)
{
  byte dm = sec/600;           //dec minutes
  byte um = sec/60 - dm*10;    //uni minutes
  byte ds = (sec%60)/10;       //dec seconds
  byte us = (sec%60) - ds*10;  //uni seconds

  selectDisplay(0);
  displayWrite(dm);
  delay(dispOnTime);
  selectDisplay(1);
  displayWrite(um);
  delay(dispOnTime);
  selectDisplay(2);
  displayWrite(ds);
  delay(dispOnTime);
  selectDisplay(3);
  displayWrite(us);
  delay(dispOnTime);
  digitalWrite(dp, HIGH);
  delay(dispOnTime);
  digitalWrite(dp, LOW);
  delay(dispOnTime);
  
}

// take the 2 bits from sel to select display through PB1 and PB2
void selectDisplay(byte sel)
{
 if (sel == 0) {
   digitalWrite(8, LOW);
   digitalWrite(9, LOW);
 }
 else if (sel == 1) {
   digitalWrite(8, LOW);
   digitalWrite(9, HIGH);
 }
 else if (sel == 2) {
   digitalWrite(8, HIGH);
   digitalWrite(9, LOW);
 }
 else {
   digitalWrite(8, HIGH);
   digitalWrite(9, HIGH);
 }
}

//take the nibble and write to PA0, PA1, PA2, PA3.
void displayWrite (byte nibble)
{
  PORTA = (PORTA & 0xf0) | (nibble & 0x0f);
}