_    ____ ____  _____ __  __ ____  _          
   / \  / ___/ ___|| ____|  \/  | __ )| |    _ __ 
  / _ \ \___ \___ \|  _| | |\/| |  _ \| |   | '__|
 / ___ \ ___) |__) | |___| |  | | |_) | |___| |   
/_/   \_\____/____/|____Assembly Language Emulator

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An assembler is a program that takes in assembly code and converts it to machine code. Assembly code is a human-readable representation of machine code, which is a set of instructions that a computer's CPU can execute. Machine code is a sequence of binary numbers that the CPU can execute directly. An assembler is used to convert assembly code to machine code so that it can be executed by the CPU.

My assembler works by taking in a file of assembly code and converting it to machine code. It does this by reading the file line by line and converting each line to machine code. It then loads the machine code into memory and runs it using a CPU emulator.

To use my assembler, create a file with assembly code and save it with a .asr extension. Then run the working_assemblr.py file and it will convert the assembly code to machine code and run it using the CPU emulator.

Assembly code is made up of instructions and operands. An instruction is a command that tells the CPU what to do, and an operand is a value that the instruction operates on. For example, the ADD instruction adds the value of the operand to the accumulator, which is a special register in the CPU.

Here is the instruction set for my assembler:

; Example program to add two numbers from user input and output the result
INP
SAV 16 ; Save the first input to RAM address 16
INP
ADD 16 ; Add the second input to the value in RAM address 16
OUT
HLT

Note: The assembly code is case-insensitive and can have comments using the ; character.

Note: Jump instructions currently only support addresses, not labels. (This will be added in a future update)

Note: The SIG instruction is only for use with the Raspberry Pi and MicroPython (This will be removed in a future update, for now it is just a placeholder)

$ python working_assemblr.py

Input a value: 5
Input a value: 7
Output: 12

To run the assembler, simply run the working_assemblr.py file and it will convert the assembly code to machine code and run it using the CPU emulator.

python working_assemblr.py

If you have any issues or questions, please send me an email at: [email protected]

This project is licensed under the GNU General Public License v3.0 - see the LICENSE file for details.

• Little Man Computer - For the inspiration for this project - LMC
• Python