Answer
When traversing a linked list in which each entry consists of two memory cells (a data cell followed by a pointer to the next entry), an instruction of the form DR0S could be used to retrieve the data and DR1S could be used to retrieve the pointer to the next entry. If the form DRTS was used, then the exact memory cell being referenced could be adjusted by modifying the value in register T.
Work Step by Step
When traversing a linked list in which each entry consists of two memory cells (a data cell followed by a pointer to the next entry), an instruction of the form DR0S could be used to retrieve the data and DR1S could be used to retrieve the pointer to the next entry. If the form DRTS was used, then the exact memory cell being referenced could be adjusted by modifying the value in register T.
