HW9 - Ryan Zanski ECE 2504 Int roduction to Computer...

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Ryan Zanski ECE 2504 Introduction to Computer Engineering, Summer I 2010 Homework 9 Due date: Thursday, 17 Jun 10, 11:55pm Show all work. Use Logicworks to draw your circuit diagrams. 1. (6 pts) A digital computer has a common bus system for 32 registers of 16 bits each. The bus is constructed with muxes. a. How many selection bits for each mux? 5; 32 registers, one must be selected 32 = 2 5 b. What size muxes are required? 32 x 1; one mux input per register c. How many muxes are there in the bus? 16; one per bit
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D0 D1 D2 D3 D4 D5 D6 D7 S0 S1 S2 EN Q DEV1 D0 D1 D2 D3 D4 D5 D6 D7 S0 S1 S2 EN Q DEV1 0 1 X Y S2 Enable Ryan Zanski 2. (10 pts) Derive a combinational circuit that selects and generates any of the 16 logic functions listed in Table 4-5. 3. (8 pts) Be sure you have installed MPLAB 8.1. There are a number of advisory statements on the CEL website. Read them and make sure that your installation is in a state that conforms to them. (This may make the difference between MPLAB working properly, and MPLAB not working at all.) The MPLAB IDE User Guide can be found under Scholar>Resources>Design Project. Complete all the following steps, then submit screen shots of your build output message, source code window, file registers, and
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HW9 - Ryan Zanski ECE 2504 Int roduction to Computer...

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