MP-System menu controls program execution:
- Run program (Ctrl+R) - start/stop automatic execution
- Step instruction (Ctrl+T) - execute exactly one instruction
- Step tact (Ctrl+Y) - execute one machine tact
- Clear RAM (Ctrl+Shift+R) - zero all memory
- Clear registers (Ctrl+Shift+G) - zero A, F, B-H, SP, PC
- Clear HLT flag (Ctrl+Shift+H) - remove HLT block
Reset buttons are also on the right panel (red and purple buttons).