public MOS6526_2(MOS6510 CPU, MOS6569 VIC, MOS6502_1541 CPU1541)
     : base(CPU)
 {
     the_vic = VIC;
     the_cpu_1541 = CPU1541;
 }
 public MOS6526_1(MOS6510 CPU, MOS6569 VIC)
     : base(CPU)
 {
     the_vic = VIC;
 }