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Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 1 of 14

LogicWorks 4 Tutorials

Jianjian Song

Department of Electrical and Computer Engineering

Rose-Hulman Institute of Technology

March 2003

Table of Contents

1 LogicWorks 4 Installation and update.............................................................................................2

2 Tutorial #1: Introduction to LogicWorks 4........................................................................................2

2.1 Objectives.............................................................................................................................2

2.2 Starting LogicWorks 4 on your laptop.......................................................................................2

2.3 Obtaining and placing gates in schematic window.....................................................................2

2.4 Connecting gates...................................................................................................................2

2.5 Labeling inputs and output signals and pins .............................................................................3

2.6 Connecting binary switches to input pins..................................................................................3

2.7 Connecting binary probes to outputs of the circuit.....................................................................3

2.8 Verifying logic function of the circuit with binary switches and probes .........................................3

2.9 Connecting clock devices to input pins and changing clock period..............................................3

2.10 Displaying and Changing gate delay time.............................................................................4

2.11 Setting trigger....................................................................................................................4

2.12 Verifying logic function of the circuit with clocks.....................................................................4

2.13 Verifying logic function of the circuit with device delay............................................................5

2.14 Copying schematic and waveform to PowerPoint or Word......................................................5

2.15 Creating signals with no waveform in a timing diagram..........................................................5

3 Tutorial #2: Device symbols and sub-circuits...................................................................................6

3.1 Objectives.............................................................................................................................6

3.2 Example sub-circuit: 74LS08 4 2-input AND gates ....................................................................6

3.3 Draw the schematic of the following turn-signal circuit without clocks..........................................6

3.4 Create Port Connectors..........................................................................................................6

3.5 Create a device symbol for the turn-signal circuit......................................................................7

3.6 Create a new library, my_library and save the symbol in it................................................8

3.7 Save your turn-signal sub-circuit to another file.........................................................................8

3.8 Construct a turn-signal test circuit with the device symbol..........................................................8

3.9 Create a sub-circuit and device symbol with Top-Down approach..............................................8

3.10 Edit a device from a library..................................................................................................9

4 Tutorial #3: A 4-Bit Counter Device with Bus Pins..........................................................................10

4.1 Objectives: to create a sub-circuit and device symbol with bus pins..........................................10

4.2 Create bus port connectors...................................................................................................10

4.3 Create a 4-bit counter sub-circuit with bus port connectors ......................................................11

4.4 Create a 4-bit counter device symbol with bus pins.................................................................11

4.5 Create a 4-bit counter with the counter symbol.......................................................................12

4.6 Different pin names in a top-level circuit and Bus Pin Information.............................................12

4.7 Debugging techniques..........................................................................................................13

4.8 Modifying a bus port in a subcircuit........................................................................................13

5 Tutorial #4: Making a ROM device with a hex file..........................................................................14

5.1 Objective: to create a ROM device that is initialized by reading a text file..................................14

5.2 Create a plain text file...........................................................................................................14

5.3 Create a Rom that is initialized from a file...............................................................................14

1 2 3 4 5 6 ... 13 14

Summary of Contents

Page 1 - LogicWorks 4 Tutorials

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 1 of 14 LogicWorks 4 Tutorials Jianjian Song Department of Electrical and Computer Engineering

Page 2

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 10 of 14 4 Tutorial #3: A 4-Bit Counter Device with Bus Pins 4.1 Objectives: to create a sub-

Page 3

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 11 of 14 4.3 Create a 4-bit counter sub-circuit with bus port connectors Bus port connectors c

Page 4 - 2.11 Setting trigger

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 12 of 14 4.5 Create a 4-bit counter with the counter symbol Now the device symbol can be teste

Page 5

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 13 of 14 4.7 Debugging techniques After a bus port is connected to pins in a subcircuit, right

Page 6

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 14 of 14 5 Tutorial #4: Making a ROM device with a hex file 5.1 Objective: to create a ROM de

Page 7

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 2 of 14 1 LogicWorks 4 Installation and update Install LogicWorks 4 from the CD from the book

Page 8

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 3 of 14 angles by dragging and releasing the wire. A replaced wire can be rerouted by selecting

Page 9

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 4 of 14 Select Clock from the Simulation IO library. Connect one clock to each input pin. Notic

Page 10 - 4-bit Bus Port In

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 5 of 14 2.13 Verifying logic function of the circuit with device delay Run simulation with sin

Page 11

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 6 of 14 3 Tutorial #2: Device symbols and sub-circuits 3.1 Objectives o To make the followin

Page 12

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 7 of 14 Every pin that will appear in the device symbol must be declared as a port in a sub-cir

Page 13 - 4.7 Debugging techniques

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 8 of 14 Click on each pin in the Pin List and give it a pin number. Create a symbol for the cir

Page 14

Jianjian Song LogicWorks 4 Tutorials (5/15/03) Page 9 of 14 When you pick a pin in the pin list on the left, its type will be shown in Pin Function

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