Registers

• PC (Program Counter): Contains the address of the next instruction to be executed
• ACC (Accumulator): Main register for arithmetic and logical operations
• B Register: Secondary register used in arithmetic operations
• MAR (Memory Address Register): Holds the address for memory operations
• MDR (Memory Data Register): Holds data being read from or written to memory
• IR (Instruction Register): Holds the current instruction being executed
• NF (Negative Flag): Set to 1 if the last operation resulted in a negative value

RAM

• 256 memory locations (00-FF in hexadecimal)
• Each location can store a value from 00-FF (0-255 in decimal)
• Labels can contain letters, numbers, and underscores
• Click on any cell to edit values or labels

Controls

• Step: Execute one instruction
• Run All: Execute all instructions until completion
• Reset: Clear all registers and return to initial state
• Submit Code: Load the code from the editor into memory

Sample Programs

Use the dropdown menu to load pre-written example programs. Each sample includes:

• Assembly code loaded into the editor
• Pre-configured RAM values and labels
• Documentation within the code