This MS Windows version can be downloaded with no restrictions (requires Microsoft.NET Framework 4): lmc.net.zip (version 3.3)

Features:

• Uses the same instruction set as the atkinsn.yorku.ca version.
• Loads and saves assembly language programs as text files.
• Supports labels for both branching and data.
• Supports indentation making code easier to follow.
• Does not remove the original code when assembly takes place.
• Features both a STEP and a RUN mode and the ability to switch between them while a program is running.
• In STEP mode, the 'Little Man' explains the next instruction before it is executed.
• Allows assembly language programs to be pasted directly into the program window.
• Allows programs to be copied from either text window for use in reports.
• Run mode is faster than the atkinsn.yorku.ca version.
• Allows line annotation such as: loop LDA value1    // Start of main loop.
• Produces an assembly language version without labels or annotation, makes it easier to understand the assembled code in RAM.
• INPUT is via an 'input device' rather than the keyboard, allowing integer values in the range -999 to 999.
• Multi-line output makes it easier to follow programs that have more than a single output.
• 'Machine Code' instructions in RAM can be edited directly (the U button will update any changes to the current instruction).

Updates:

• version 3.3 - RESET button added making it possible to reset the program counter without having to assemble the program again.
• version 3.2 - improved line annotation facility, any annotation can be added to the end of a line.
• version 3.1 - implemented negative DAT and INPUT values.
• version 3.0 - ASSEMBLE button altered to more accurately reflect what it does.
• version 2.9 - set the overflow of numbers less than -999 to match the atkinsn.yorku.ca version
  (if accumulator < -999 Then accumulator = accumulator + 1999)
• version 2.8 - swapped the positions of the INPUT and the OUTPUT to aid data entry.