 contention if a tool is composed from different components each of which uses scratch registers. Using this function is to be preferred to directly using the REG_INST_Gn register enumerations.<p>
Note that although this function is available in probe mode, use of Pin scratch registers is not currently supported in probe mode, so this function is useless there.<p>
<dl compact><dt><b>Returns:</b></dt><dd>A register to be used, or <a class="el" href="group__REG__CPU__GENERIC.html#g59a6c6af484234e9b1eac3cbcacb