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It is OK to use CodeWarrior to check your work and make corrections after you have done it by hand. Refer above for details on wiring the circuit. Your program shall meet the following requirements: When you record your answers, use the conventions described in the discussion section.

LS Datasheet, PDF – Alldatasheet

This lab uses the same circuit as Lab 2 part A. BUT, we expect both of you to understand and participate in the execution of both labs. Confirm the operation using the simulator to make sure you got it right, which you need document only by saying “checked with simulator” datasheft your hand-in.

Links to all files referenced in the lab and prelab can be found in the Files section at the end of this document.

The term counter limit refers to the maximum value the counter runs to e. And, as always, you must do the pre-labs independently. Circuit Output Connections In the resistor network, each resistor is Ohms.

Embedded Hardware – Part B: Look carefully at the data sheet! We suggest each of the two students in your lab group be datasheey charge” of one of the two parts of the lab parts to help divide the work. Paste a copy of the lab portion of the Lab Writeup Checklist into your hand-in materials. For the questions involving the running sum, you may find it faster to compute the sum using a formula for an arithmetic sequence, rather than doing the sum iteratively.

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Assume the voltage drop across the LED is 1. Pin 2 provides D0 to bus, Pin 5 provides D1, etc. The first instruction is done as an example. Paste a copy of the pre-lab portion of the Datsaheet Writeup Checklist into your hand-in materials. Pick an instruction where the exact execution time differs from the best case execution time and explain why in one sentence.

Please see the course web page for due dates. All non-code parts of the hand-in should be submitted as a single document. For this lab, you will write a program that uses a loop to add the numbers 1 through and displays the results. Assume that all setup, hold, pulse duration, and propagation times are valid and the outputs have settled for these sample points. Machine code is fetched datasneet memory and the instructions described are executed by the processor.

You will be expected to assemble, disassemble, and time code by hand on tests and quizzes. You MUST follow these procedures or we will not accept your submissions. Create a similar example using different, non-trivial e. Note that 74LS labeling of “Q” outputs is in terms of bus bits and not per data sheet for this diagram. This lab uses a flip-flop to hold a data value on a bar graph LED. Demonstrate that you can read and understand the datasheet for an IC and use it in a circuit.

Also, see the course materials lz374 page. Briefly comment each line to describe what it does 10 words or fewer per line.

For the questions in part B. To familiarize you with the operation of the LS flip-flop and understand how it can be integrated into a eatasheet. Do this by hand using the reference materials. You do not have to use the assembly program or the simulator. Code files should be submitted separately, per the lab FAQ.

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Using a checklist is your best defense against this in general, and in particular is extremely datasheeg for avoiding unnecessary point losses when handing in assignments for this course. Do this by hand — do NOT use the simulator since it will give exact execution time and not best case execution time. Scan the printed-out document after you add the checkmarks and upload to the hand-in folder.

For branch instructions, insert labels at the appropriate locations and use the label values in your disassembled assembly code. It is easy to make small mistakes when you are in a hurry.

The point of this exercise is to actually follow all the steps on the checklist, not just say you followed them. Assume that the output voltage is quiescent i. To familiarize yourself with datasneet microcontroller assembly instructions and the process of assembly.

Be sure to consult the Lab Writeup Checklist for both the prelab and lab writeup! For each question below, we suggest that you do the work by hand and check it with an assembler. Why is it valid or invalid?

18-348 Lab #2

For example, if Q7 is high, and Q6: Think of how embarrassed you will be if you get something wrong after saying you followed the checklist. Limit your answer to 40 words. This includes performing operations shift, l374, subtract, clear on registers and memory locations and copying values from one location to another.