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(b) An 8-bit microprocessor is interfaced with a 2K x 8 ROM chip and two 1K x 8 RAM chips
such that the address map in Table 2(b) is realized.
Draw the memory map of this system.
Determine the amount of unused memory spaces in bytes.
2x24
(i)
(ii)
Table 2(b)
Device
ROM chip
RAM chipl
RAM chip2
Size
2K x 8
IK x 8
1K x 8
-

"(
(0
Address Assignment
0000-07FF
0800-0BFF
OC00-0FFF
Azg
es
25
R/W