printPAddr method
Implementation
@override
void printPAddr(){
//Debugger.verbose('${pcHex(-1)} [print_paddr]');
var operand = visitOperandsShortForm();
var addr = unpackPAddr(operand.value!);
var str = ZSCII.readZStringAndPop(addr);
Debugger.verbose('${pcHex()} "$str"');
Z.sbuff.write(str);
}