20 - bit Strat at address 80000 Please answer the question (d)

Please explain what will happen to E1, E2 and E3 in the decorder and A0, A1 and A2

1. (15 Pts.) In this problem you are to interface a microprocessor 220 bit address bus and 8-bit data bus) to 1 MB RAM (consisting of 8 RAM chips each of 128KB). Each RAM chip has CS2 (active high) and -CS1 (active low). The 1MB RAM is to start at address 10000h without any foldback. Use a 3-to-8 block decoder to make your design simpler. lis O dlo OO OOOOOOOOOOOO a. What is the total address space of this microprocessor? 224 = 16 MB b. What is the end address of this 1MB RAM? 2 ...A AFFECFh c. Indicate the start and end address of each IC. ICA cu - ALG ALF FF ICA AB F F F d Test Provide the details of your interface. You may not draw the whole circuit as long as you clearly indicate will important connections H | A tAo decorder 3b0% * , s le E2