LC-3 Linux Simulator Helpful Hints

• If your program performs any I/O, the very first command you should execute is run. This sets up the Supervisor Stack which the Trap routines make use of.


• If you create an LC-3 .asm file on a Windows machine, it won't assemble on a Unix machine right off the bat due to compatibility issues. Do the following to make the file Unix compatible (I am assuming that you are logged into a Linux machine and the file is present in your CS account).
  • Log into a Sun machine (eg. leaflock)
  • Type: dos2unix windows_program.asm > unix_program.asm
  Now the file called unix_program.asm should contain your assembly code and should assemble on any Linux machine. Note that the dos2unix utility is only present on Sun machines.


• In the GUI version executing the run command will open the Execution Window. You should note that the execution window is only meant for displaying output. If your program takes input from the user, you will have to enter it through the debugger window and not the execution window.