mul method
void
mul()
Implementation
void mul() {
//Debugger.verbose('${pcHex(-1)} [mul]');
final operands = mem.loadb(programCounter- 1) < 193
? visitOperandsLongForm()
: visitOperandsVar(2, false);
final resultTo = readb();
final result = MathHelper.toSigned(operands[0].value!) * MathHelper.toSigned(operands[1].value!);
//Debugger.verbose(' >>> (mul ${pc.toRadixString(16)}) ${operands[0].value}(${toSigned(operands[0].value)}) * ${operands[1].value}(${toSigned(operands[1].value)}) = $result');
writeVariable(resultTo, result);
}