ing a memory or device (The unused lines for a memory or device are for the use by the
decoder).
Step F
4
: Find out what are the address lines not used at each memory and device. Write
these in column 7. These must then be used for finding the conditions to select a
memory or device.
Step F
5
: Find the conditions on the unused address lines using the Figure 17.7 address
assignments. These are the conditions needed when selecting a memory or device.
Write these in column 8.
By a memory or chip, the unused address lines which are also unused by other memory
or devices are utilized for decoding the addresses because a particular device ...
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