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ECE4500_Project2

# ECE4500_Project2 - #\$/011'23%\$'4151 6#78*9'4 Due at 11:59...

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!"#\$"%"& ()*+ , -.- /011 , 23#"%\$ 4151 6#78)*9 4 Due at 11:59 p.m. (EDT) on March 21 Name: ___________________________________ ID Number: ______________________ :%9#7;<*9"7% The objectives of this project are to reinforce your understanding of low-level computation, and to gain experience with programming in assembly language. You will accomplish this by writing a program for the MARIE processor in assembly language to perform a relatively simple task. You must assemble and test your program using the MARIE simulation package, which is available at no cost from http://computerscience.jbpub.com/ecoa/2e/student_resources.cfm . MarieSim allows you to observe the contents of registers and memory while running a program on a simulated machine. 6#7\$#&= 23)*">"*&9"7% Write an assembly language program for the MARIE processor that will f i nd the maximum value that is contained in an array of 8 integers. The general structure of the assembly language source code is illustrated in Figure 1. / ECE 4500 Project 2 / Find the maximum value in an array / <Your name, and other useful comments> ORG 100 /Your program instructions go here Halt /Variables and constants X, DEC 3 /First value of data array DEC -2 /Second value DEC 17 /Third value DEC 0 DEC 8 DEC -23 DEC 5 DEC 14 /Last value of data array Max, DEC 0 /The result will be placed here Ptr, HEX 116 /Pointer to start of array X One, DEC 1 /Constant: 1 Var, . . . /Other variables and constants / can be placed here Figure 1. Code template with separate areas for instructions and data.

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For full credit, your program should satisfy these requirements: x The first instruction of your program must be placed at location (address) 0x100 in MARIE’s main memory. This is accomplished by following the template in Figure 1. x The 8 data values to be processed by your program should be in successive memory locations that immediately follow the last instruction in your program, as shown in the figure. These values should be “hard-coded” into the program, as indicated in the figure, which uses label “X” to indicate the first data value.
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