(a) For the 1-step memory picture on the left, on the right we see the 2-step memory picture that
reproduces the 1-step memory picture. We have seen that copying the
1-step memory table into each row of the 2-step memory table gives the same picture. |
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(b) Below we see that by copying the 1-step memory table into each face of the 2-step memory table,
we obtain four copies of the 1-step memory picture, one
for each of the length-1 address subsquares. |
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(c) There is one other obvious way to copy the 1-step memory table into the
2-step memory table: pasting into the columns. |
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Here is an explanation of that picture. |