The individual words of the quadruple registers were associated with an auto-increment / decrement facility.
2.
Thus, for example, 32 words read from the drum could be transferred as a block to any of the other delay lines; four words could be transferred as a block from one quadruple register to the other, or between a quadruple register and a delay line all with one instruction.
3.
Thus, for example, 32 words read from the drum could be transferred as a block to any of the other delay lines; four words could be transferred as a block from one quadruple register to the other, or between a quadruple register and a delay line all with one instruction.