1. Figure 1 shows the centre processing unit of 8086 with 64 pins. Please refer to the figure 1 for the following question. i. How many bits are allocated for the data bus and the address bus for this CPU? [2 Marks) ii. Write the procedure of write and read for this CPU. [6 Marks] Briefly explain the procedure taken place when the pin 18 is being supply with low signal. [4 Marks] iv. The ILP 1-3 are the interrupt pins for 68000 CPU, briefly explain ONE interrupt procedure that could be used to allowed I/O device. [3 Marks] 111. D D. D. D, 63 D. 62 D, 61 D, 60D 59 58 57 56D 55D 54D S3 GND 52A 51 A 50A 49 49 47 46 A 45 44 68000 CPU D. 1 D2 D. 3 D DS AS 6 UDS 7 LDS 8 R/ W9 DTACK 10 BG BGACK 12 BR 13 Ve 14 CLK 15 GND 16 HALT 17 RESET 18 VMA 19 E20 VPA 21 BERR 22 IPL 23 IPL 24 IPL 25 FC 26 FC, 27 FC 28 A29 A 30 A 31 A 32 Vac A 42 A 41 40 A 39A 38A 37 A 35 A, A A, 33 Figurel