UMBC CMSC 313, Computer Organization & Assembly Language, Fall 2001, Section 0101

Homework 4 Information

The schematics for Question 2 and Question 3 are pre-configured. (Following the links will launch DigSim in your browser.)

For question 4, you need to run DigSim and save the diagram. The most straightforward way of doing this is to run it locally on a Unix machine. Here are the steps:

Commandeer a PC in a lab and boot it to run Linux (this will take a few minutes). The "Gnome" X-windows should start up after you log in.
Launch a terminal emulator (should be located in the application launching bar at the bottom of the screen, unless you've changed the default set up) and get a Unix prompt.
Change the current directory to the digsim directory in my public directory for CMSC 313:
```
   cd /afs/umbc.edu/users/c/h/chang/pub/cs313/digsim/
```
Run DigSim in the java virtual machine using the DummyAppletContext wrapper:
```
   java DummyAppletContext DigSim -width 300 -height 50 fileop true
```
You should get a DigSim window shortly. Try making a simple circuit and saving it. When you save a circuit, you will be presented with a standard X11 file navigation "dialog box". Navigate to your own home directory and save the circuit there. You won't be able to save the circuit in my directory.
When you've finished question 4, save it. Relaunch DigSim and reload the circuit, just to make sure it's there. Then submit the .sim file using the Unix submit command:
```
   submit cs313 hw4 foo.sim
```

Last Modified: 22 Jul 2024 11:27:55 EDT by Richard Chang

to Fall 2001 CMSC 313 Section Homepage