1. Assume that the content of all locations of the memory units in Figure 1 is $
ID: 3855252 • Letter: 1
Question
1. Assume that the content of all locations of the memory units in Figure 1 is $ff. Assume that the CPU places $0000 on the address lines, $02 on the data lines, and activates the WR signal. How does the memory system of Figure 1 react to these values?
2. Explain which memory unit in Figure 1 is selected, what happens if the value on the address lines is $4500, and what occurs when the RD signal is activated.
DO. D7 RD VWR DO..07 RD WR DO D7 RD WR AD A12 AO. A12 AO A12 A13 AD A12 A13 A14 tT it AO. A12 A13 A1 A15 CPUExplanation / Answer
1.RAM3
Explanation:
The content of all locations of the memory units in Figure 1 is $ff.let us be Assume that the CPU places $0000 on the address lines, $02 on the data lines, and activates the WR signal then the RAM3 of the above memory system can react for these values.
2.
3fff – 2000 = 1fff = 8191
2^16 = 64k
Explanation:
when the RD signal is activated, and if value on the address lines is $4500, then
3fff – 2000 = 1fff = 8191
2^16 = 64k
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