Instructions

• Key Switch (top left): Toggle register/memory view
• Run Mode Switch (top right): Click to cycle Stop / Slow / Fast
• Toggle Switches: Set 16-bit address or 8/16-bit data (top row is lower byte)
• RESET: Reset the CPU (PC = 0) or loads a program from the predefined ones
• SINGLE STEP: Execute one instruction
• STORE ADDR: Set the current address/program counter from switches
• STORE BYTE: Write (top) byte to memory at current address
• STORE WORD: Write both bytes to memory
• AUTO INCREMENT: Automatically increment address after store

Source code: github.com/gzalo/microcomputer