sequence to drive it:
  Winding 1 1001001001001001001001001
  Winding 2 0100100100100100100100100
  Winding 3 0010010010010010010010010
              time --->

// config ...
//...

main(){
  unsigned short delay, a;
  TRISC = 0; //output
  delay = 250;
  a = 0;
  while(1){
     PORTC = 0b00000110;
     delay_us(delay);
     PORTC = 0b00000101;
     delay_us(delay);
     PORTC = 0b00000011;
     delay_us(delay);
     if (++a == 0) if (delay>0) delay--;
  }
}

Executing: "C:\MCC18\bin\mcc18.exe" -p=18F1320 "b.c" -fo="b.o" -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
MPLAB C18 v3.20 (demo)
Copyright 1999-2005 Microchip Technology Inc.
Days remaining until demo becomes feature limited:  60
C:\PicCode\b\b.c:14:Warning [2058] call of function without prototype
C:\PicCode\b\b.c:16:Warning [2058] call of function without prototype
C:\PicCode\b\b.c:18:Warning [2058] call of function without prototype
Executing: "C:\MCC18\bin\mplink.exe" "C:\MCC18\lkr\18f1320.lkr" "C:\PicCode\b\b.o" "C:\MCC18\lib\c018i.o" /o"b.cof" /M"b.map" /W
MPLINK 4.20, Linker
Copyright (c) 2008 Microchip Technology Inc.
Error - could not find file 'c018i.o'.
Errors    : 1

#include <p18f1320.h>
#include <delays.h>
#pragma config OSC = INTIO1, WDT = OFF, LVP = OFF, DEBUG = ON



void main (void){
  unsigned short delay, a;
  TRISA = 0; //output
  delay = 250;
  a = 0;
  while(1){
     PORTA = 0b00001100;
     delay_us(delay);
     PORTA = 0b00001010;
     delay_us(delay);
     PORTA = 0b00000110;
     delay_us(delay);
     if (++a == 0) if (delay>0) delay--;
  }
}